Updated script that can be controled by Nodejs web app

node_modules/engine.io-client/build/cjs/browser-entrypoint.d.ts

@@ -0,0 +1,3 @@
+import { Socket } from "./socket.js";
+declare const _default: (uri: any, opts: any) => Socket;
+export default _default;

node_modules/engine.io-client/build/cjs/browser-entrypoint.js

@@ -0,0 +1,4 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const socket_js_1 = require("./socket.js");
+exports.default = (uri, opts) => new socket_js_1.Socket(uri, opts);

node_modules/engine.io-client/build/cjs/contrib/has-cors.d.ts

@@ -0,0 +1 @@
+export declare const hasCORS: boolean;

node_modules/engine.io-client/build/cjs/contrib/has-cors.js

@@ -0,0 +1,14 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.hasCORS = void 0;
+// imported from https://github.com/component/has-cors
+let value = false;
+try {
+    value = typeof XMLHttpRequest !== 'undefined' &&
+        'withCredentials' in new XMLHttpRequest();
+}
+catch (err) {
+    // if XMLHttp support is disabled in IE then it will throw
+    // when trying to create
+}
+exports.hasCORS = value;

node_modules/engine.io-client/build/cjs/contrib/parseqs.d.ts

@@ -0,0 +1,15 @@
+/**
+ * Compiles a querystring
+ * Returns string representation of the object
+ *
+ * @param {Object}
+ * @api private
+ */
+export declare function encode(obj: any): string;
+/**
+ * Parses a simple querystring into an object
+ *
+ * @param {String} qs
+ * @api private
+ */
+export declare function decode(qs: any): {};

node_modules/engine.io-client/build/cjs/contrib/parseqs.js

@@ -0,0 +1,38 @@
+"use strict";
+// imported from https://github.com/galkn/querystring
+/**
+ * Compiles a querystring
+ * Returns string representation of the object
+ *
+ * @param {Object}
+ * @api private
+ */
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.encode = encode;
+exports.decode = decode;
+function encode(obj) {
+    let str = '';
+    for (let i in obj) {
+        if (obj.hasOwnProperty(i)) {
+            if (str.length)
+                str += '&';
+            str += encodeURIComponent(i) + '=' + encodeURIComponent(obj[i]);
+        }
+    }
+    return str;
+}
+/**
+ * Parses a simple querystring into an object
+ *
+ * @param {String} qs
+ * @api private
+ */
+function decode(qs) {
+    let qry = {};
+    let pairs = qs.split('&');
+    for (let i = 0, l = pairs.length; i < l; i++) {
+        let pair = pairs[i].split('=');
+        qry[decodeURIComponent(pair[0])] = decodeURIComponent(pair[1]);
+    }
+    return qry;
+}

node_modules/engine.io-client/build/cjs/contrib/parseuri.d.ts

@@ -0,0 +1 @@
+export declare function parse(str: string): any;

node_modules/engine.io-client/build/cjs/contrib/parseuri.js

@@ -0,0 +1,67 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.parse = parse;
+// imported from https://github.com/galkn/parseuri
+/**
+ * Parses a URI
+ *
+ * Note: we could also have used the built-in URL object, but it isn't supported on all platforms.
+ *
+ * See:
+ * - https://developer.mozilla.org/en-US/docs/Web/API/URL
+ * - https://caniuse.com/url
+ * - https://www.rfc-editor.org/rfc/rfc3986#appendix-B
+ *
+ * History of the parse() method:
+ * - first commit: https://github.com/socketio/socket.io-client/commit/4ee1d5d94b3906a9c052b459f1a818b15f38f91c
+ * - export into its own module: https://github.com/socketio/engine.io-client/commit/de2c561e4564efeb78f1bdb1ba39ef81b2822cb3
+ * - reimport: https://github.com/socketio/engine.io-client/commit/df32277c3f6d622eec5ed09f493cae3f3391d242
+ *
+ * @author Steven Levithan <stevenlevithan.com> (MIT license)
+ * @api private
+ */
+const re = /^(?:(?![^:@\/?#]+:[^:@\/]*@)(http|https|ws|wss):\/\/)?((?:(([^:@\/?#]*)(?::([^:@\/?#]*))?)?@)?((?:[a-f0-9]{0,4}:){2,7}[a-f0-9]{0,4}|[^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/;
+const parts = [
+    'source', 'protocol', 'authority', 'userInfo', 'user', 'password', 'host', 'port', 'relative', 'path', 'directory', 'file', 'query', 'anchor'
+];
+function parse(str) {
+    if (str.length > 8000) {
+        throw "URI too long";
+    }
+    const src = str, b = str.indexOf('['), e = str.indexOf(']');
+    if (b != -1 && e != -1) {
+        str = str.substring(0, b) + str.substring(b, e).replace(/:/g, ';') + str.substring(e, str.length);
+    }
+    let m = re.exec(str || ''), uri = {}, i = 14;
+    while (i--) {
+        uri[parts[i]] = m[i] || '';
+    }
+    if (b != -1 && e != -1) {
+        uri.source = src;
+        uri.host = uri.host.substring(1, uri.host.length - 1).replace(/;/g, ':');
+        uri.authority = uri.authority.replace('[', '').replace(']', '').replace(/;/g, ':');
+        uri.ipv6uri = true;
+    }
+    uri.pathNames = pathNames(uri, uri['path']);
+    uri.queryKey = queryKey(uri, uri['query']);
+    return uri;
+}
+function pathNames(obj, path) {
+    const regx = /\/{2,9}/g, names = path.replace(regx, "/").split("/");
+    if (path.slice(0, 1) == '/' || path.length === 0) {
+        names.splice(0, 1);
+    }
+    if (path.slice(-1) == '/') {
+        names.splice(names.length - 1, 1);
+    }
+    return names;
+}
+function queryKey(uri, query) {
+    const data = {};
+    query.replace(/(?:^|&)([^&=]*)=?([^&]*)/g, function ($0, $1, $2) {
+        if ($1) {
+            data[$1] = $2;
+        }
+    });
+    return data;
+}

node_modules/engine.io-client/build/cjs/globals.d.ts

@@ -0,0 +1,4 @@
+export declare const nextTick: (cb: any, setTimeoutFn: any) => any;
+export declare const globalThisShim: any;
+export declare const defaultBinaryType = "arraybuffer";
+export declare function createCookieJar(): void;

node_modules/engine.io-client/build/cjs/globals.js

@@ -0,0 +1,26 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.defaultBinaryType = exports.globalThisShim = exports.nextTick = void 0;
+exports.createCookieJar = createCookieJar;
+exports.nextTick = (() => {
+    const isPromiseAvailable = typeof Promise === "function" && typeof Promise.resolve === "function";
+    if (isPromiseAvailable) {
+        return (cb) => Promise.resolve().then(cb);
+    }
+    else {
+        return (cb, setTimeoutFn) => setTimeoutFn(cb, 0);
+    }
+})();
+exports.globalThisShim = (() => {
+    if (typeof self !== "undefined") {
+        return self;
+    }
+    else if (typeof window !== "undefined") {
+        return window;
+    }
+    else {
+        return Function("return this")();
+    }
+})();
+exports.defaultBinaryType = "arraybuffer";
+function createCookieJar() { }

node_modules/engine.io-client/build/cjs/globals.node.d.ts

@@ -0,0 +1,21 @@
+export declare const nextTick: (callback: Function, ...args: any[]) => void;
+export declare const globalThisShim: typeof globalThis;
+export declare const defaultBinaryType = "nodebuffer";
+export declare function createCookieJar(): CookieJar;
+interface Cookie {
+    name: string;
+    value: string;
+    expires?: Date;
+}
+/**
+ * @see https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Set-Cookie
+ */
+export declare function parse(setCookieString: string): Cookie;
+export declare class CookieJar {
+    private _cookies;
+    parseCookies(values: string[]): void;
+    get cookies(): IterableIterator<[string, Cookie]>;
+    addCookies(xhr: any): void;
+    appendCookies(headers: Headers): void;
+}
+export {};

node_modules/engine.io-client/build/cjs/globals.node.js

@@ -0,0 +1,97 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.CookieJar = exports.defaultBinaryType = exports.globalThisShim = exports.nextTick = void 0;
+exports.createCookieJar = createCookieJar;
+exports.parse = parse;
+exports.nextTick = process.nextTick;
+exports.globalThisShim = global;
+exports.defaultBinaryType = "nodebuffer";
+function createCookieJar() {
+    return new CookieJar();
+}
+/**
+ * @see https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Set-Cookie
+ */
+function parse(setCookieString) {
+    const parts = setCookieString.split("; ");
+    const i = parts[0].indexOf("=");
+    if (i === -1) {
+        return;
+    }
+    const name = parts[0].substring(0, i).trim();
+    if (!name.length) {
+        return;
+    }
+    let value = parts[0].substring(i + 1).trim();
+    if (value.charCodeAt(0) === 0x22) {
+        // remove double quotes
+        value = value.slice(1, -1);
+    }
+    const cookie = {
+        name,
+        value,
+    };
+    for (let j = 1; j < parts.length; j++) {
+        const subParts = parts[j].split("=");
+        if (subParts.length !== 2) {
+            continue;
+        }
+        const key = subParts[0].trim();
+        const value = subParts[1].trim();
+        switch (key) {
+            case "Expires":
+                cookie.expires = new Date(value);
+                break;
+            case "Max-Age":
+                const expiration = new Date();
+                expiration.setUTCSeconds(expiration.getUTCSeconds() + parseInt(value, 10));
+                cookie.expires = expiration;
+                break;
+            default:
+            // ignore other keys
+        }
+    }
+    return cookie;
+}
+class CookieJar {
+    constructor() {
+        this._cookies = new Map();
+    }
+    parseCookies(values) {
+        if (!values) {
+            return;
+        }
+        values.forEach((value) => {
+            const parsed = parse(value);
+            if (parsed) {
+                this._cookies.set(parsed.name, parsed);
+            }
+        });
+    }
+    get cookies() {
+        const now = Date.now();
+        this._cookies.forEach((cookie, name) => {
+            var _a;
+            if (((_a = cookie.expires) === null || _a === void 0 ? void 0 : _a.getTime()) < now) {
+                this._cookies.delete(name);
+            }
+        });
+        return this._cookies.entries();
+    }
+    addCookies(xhr) {
+        const cookies = [];
+        for (const [name, cookie] of this.cookies) {
+            cookies.push(`${name}=${cookie.value}`);
+        }
+        if (cookies.length) {
+            xhr.setDisableHeaderCheck(true);
+            xhr.setRequestHeader("cookie", cookies.join("; "));
+        }
+    }
+    appendCookies(headers) {
+        for (const [name, cookie] of this.cookies) {
+            headers.append("cookie", `${name}=${cookie.value}`);
+        }
+    }
+}
+exports.CookieJar = CookieJar;

node_modules/engine.io-client/build/cjs/index.d.ts

@@ -0,0 +1,15 @@
+import { Socket } from "./socket.js";
+export { Socket };
+export { SocketOptions, SocketWithoutUpgrade, SocketWithUpgrade, } from "./socket.js";
+export declare const protocol: number;
+export { Transport, TransportError } from "./transport.js";
+export { transports } from "./transports/index.js";
+export { installTimerFunctions } from "./util.js";
+export { parse } from "./contrib/parseuri.js";
+export { nextTick } from "./globals.node.js";
+export { Fetch } from "./transports/polling-fetch.js";
+export { XHR as NodeXHR } from "./transports/polling-xhr.node.js";
+export { XHR } from "./transports/polling-xhr.js";
+export { WS as NodeWebSocket } from "./transports/websocket.node.js";
+export { WS as WebSocket } from "./transports/websocket.js";
+export { WT as WebTransport } from "./transports/webtransport.js";

node_modules/engine.io-client/build/cjs/index.js

@@ -0,0 +1,32 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.WebTransport = exports.WebSocket = exports.NodeWebSocket = exports.XHR = exports.NodeXHR = exports.Fetch = exports.nextTick = exports.parse = exports.installTimerFunctions = exports.transports = exports.TransportError = exports.Transport = exports.protocol = exports.SocketWithUpgrade = exports.SocketWithoutUpgrade = exports.Socket = void 0;
+const socket_js_1 = require("./socket.js");
+Object.defineProperty(exports, "Socket", { enumerable: true, get: function () { return socket_js_1.Socket; } });
+var socket_js_2 = require("./socket.js");
+Object.defineProperty(exports, "SocketWithoutUpgrade", { enumerable: true, get: function () { return socket_js_2.SocketWithoutUpgrade; } });
+Object.defineProperty(exports, "SocketWithUpgrade", { enumerable: true, get: function () { return socket_js_2.SocketWithUpgrade; } });
+exports.protocol = socket_js_1.Socket.protocol;
+var transport_js_1 = require("./transport.js");
+Object.defineProperty(exports, "Transport", { enumerable: true, get: function () { return transport_js_1.Transport; } });
+Object.defineProperty(exports, "TransportError", { enumerable: true, get: function () { return transport_js_1.TransportError; } });
+var index_js_1 = require("./transports/index.js");
+Object.defineProperty(exports, "transports", { enumerable: true, get: function () { return index_js_1.transports; } });
+var util_js_1 = require("./util.js");
+Object.defineProperty(exports, "installTimerFunctions", { enumerable: true, get: function () { return util_js_1.installTimerFunctions; } });
+var parseuri_js_1 = require("./contrib/parseuri.js");
+Object.defineProperty(exports, "parse", { enumerable: true, get: function () { return parseuri_js_1.parse; } });
+var globals_node_js_1 = require("./globals.node.js");
+Object.defineProperty(exports, "nextTick", { enumerable: true, get: function () { return globals_node_js_1.nextTick; } });
+var polling_fetch_js_1 = require("./transports/polling-fetch.js");
+Object.defineProperty(exports, "Fetch", { enumerable: true, get: function () { return polling_fetch_js_1.Fetch; } });
+var polling_xhr_node_js_1 = require("./transports/polling-xhr.node.js");
+Object.defineProperty(exports, "NodeXHR", { enumerable: true, get: function () { return polling_xhr_node_js_1.XHR; } });
+var polling_xhr_js_1 = require("./transports/polling-xhr.js");
+Object.defineProperty(exports, "XHR", { enumerable: true, get: function () { return polling_xhr_js_1.XHR; } });
+var websocket_node_js_1 = require("./transports/websocket.node.js");
+Object.defineProperty(exports, "NodeWebSocket", { enumerable: true, get: function () { return websocket_node_js_1.WS; } });
+var websocket_js_1 = require("./transports/websocket.js");
+Object.defineProperty(exports, "WebSocket", { enumerable: true, get: function () { return websocket_js_1.WS; } });
+var webtransport_js_1 = require("./transports/webtransport.js");
+Object.defineProperty(exports, "WebTransport", { enumerable: true, get: function () { return webtransport_js_1.WT; } });

node_modules/engine.io-client/build/cjs/package.json

@@ -0,0 +1,10 @@
+{
+  "name": "engine.io-client",
+  "type": "commonjs",
+  "browser": {
+    "ws": false,
+    "./transports/polling-xhr.node.js": "./transports/polling-xhr.js",
+    "./transports/websocket.node.js": "./transports/websocket.js",
+    "./globals.node.js": "./globals.js"
+  }
+}

node_modules/engine.io-client/build/cjs/socket.d.ts

@@ -0,0 +1,482 @@
+import { Emitter } from "@socket.io/component-emitter";
+import type { Packet, BinaryType, RawData } from "engine.io-parser";
+import { CloseDetails, Transport } from "./transport.js";
+import { CookieJar } from "./globals.node.js";
+export interface SocketOptions {
+    /**
+     * The host that we're connecting to. Set from the URI passed when connecting
+     */
+    host?: string;
+    /**
+     * The hostname for our connection. Set from the URI passed when connecting
+     */
+    hostname?: string;
+    /**
+     * If this is a secure connection. Set from the URI passed when connecting
+     */
+    secure?: boolean;
+    /**
+     * The port for our connection. Set from the URI passed when connecting
+     */
+    port?: string | number;
+    /**
+     * Any query parameters in our uri. Set from the URI passed when connecting
+     */
+    query?: {
+        [key: string]: any;
+    };
+    /**
+     * `http.Agent` to use, defaults to `false` (NodeJS only)
+     *
+     * Note: the type should be "undefined | http.Agent | https.Agent | false", but this would break browser-only clients.
+     *
+     * @see https://nodejs.org/api/http.html#httprequestoptions-callback
+     */
+    agent?: string | boolean;
+    /**
+     * Whether the client should try to upgrade the transport from
+     * long-polling to something better.
+     * @default true
+     */
+    upgrade?: boolean;
+    /**
+     * Forces base 64 encoding for polling transport even when XHR2
+     * responseType is available and WebSocket even if the used standard
+     * supports binary.
+     */
+    forceBase64?: boolean;
+    /**
+     * The param name to use as our timestamp key
+     * @default 't'
+     */
+    timestampParam?: string;
+    /**
+     * Whether to add the timestamp with each transport request. Note: this
+     * is ignored if the browser is IE or Android, in which case requests
+     * are always stamped
+     * @default false
+     */
+    timestampRequests?: boolean;
+    /**
+     * A list of transports to try (in order). Engine.io always attempts to
+     * connect directly with the first one, provided the feature detection test
+     * for it passes.
+     *
+     * @default ['polling','websocket', 'webtransport']
+     */
+    transports?: ("polling" | "websocket" | "webtransport" | string)[] | TransportCtor[];
+    /**
+     * Whether all the transports should be tested, instead of just the first one.
+     *
+     * If set to `true`, the client will first try to connect with HTTP long-polling, and then with WebSocket in case of
+     * failure, and finally with WebTransport if the previous attempts have failed.
+     *
+     * If set to `false` (default), if the connection with HTTP long-polling fails, then the client will not test the
+     * other transports and will abort the connection.
+     *
+     * @default false
+     */
+    tryAllTransports?: boolean;
+    /**
+     * If true and if the previous websocket connection to the server succeeded,
+     * the connection attempt will bypass the normal upgrade process and will
+     * initially try websocket. A connection attempt following a transport error
+     * will use the normal upgrade process. It is recommended you turn this on
+     * only when using SSL/TLS connections, or if you know that your network does
+     * not block websockets.
+     * @default false
+     */
+    rememberUpgrade?: boolean;
+    /**
+     * Timeout for xhr-polling requests in milliseconds (0) (only for polling transport)
+     */
+    requestTimeout?: number;
+    /**
+     * Transport options for Node.js client (headers etc)
+     */
+    transportOptions?: Object;
+    /**
+     * (SSL) Certificate, Private key and CA certificates to use for SSL.
+     * Can be used in Node.js client environment to manually specify
+     * certificate information.
+     */
+    pfx?: string;
+    /**
+     * (SSL) Private key to use for SSL. Can be used in Node.js client
+     * environment to manually specify certificate information.
+     */
+    key?: string;
+    /**
+     * (SSL) A string or passphrase for the private key or pfx. Can be
+     * used in Node.js client environment to manually specify certificate
+     * information.
+     */
+    passphrase?: string;
+    /**
+     * (SSL) Public x509 certificate to use. Can be used in Node.js client
+     * environment to manually specify certificate information.
+     */
+    cert?: string;
+    /**
+     * (SSL) An authority certificate or array of authority certificates to
+     * check the remote host against.. Can be used in Node.js client
+     * environment to manually specify certificate information.
+     */
+    ca?: string | string[];
+    /**
+     * (SSL) A string describing the ciphers to use or exclude. Consult the
+     * [cipher format list]
+     * (http://www.openssl.org/docs/apps/ciphers.html#CIPHER_LIST_FORMAT) for
+     * details on the format.. Can be used in Node.js client environment to
+     * manually specify certificate information.
+     */
+    ciphers?: string;
+    /**
+     * (SSL) If true, the server certificate is verified against the list of
+     * supplied CAs. An 'error' event is emitted if verification fails.
+     * Verification happens at the connection level, before the HTTP request
+     * is sent. Can be used in Node.js client environment to manually specify
+     * certificate information.
+     */
+    rejectUnauthorized?: boolean;
+    /**
+     * Headers that will be passed for each request to the server (via xhr-polling and via websockets).
+     * These values then can be used during handshake or for special proxies.
+     */
+    extraHeaders?: {
+        [header: string]: string;
+    };
+    /**
+     * Whether to include credentials (cookies, authorization headers, TLS
+     * client certificates, etc.) with cross-origin XHR polling requests
+     * @default false
+     */
+    withCredentials?: boolean;
+    /**
+     * Whether to automatically close the connection whenever the beforeunload event is received.
+     * @default false
+     */
+    closeOnBeforeunload?: boolean;
+    /**
+     * Whether to always use the native timeouts. This allows the client to
+     * reconnect when the native timeout functions are overridden, such as when
+     * mock clocks are installed.
+     * @default false
+     */
+    useNativeTimers?: boolean;
+    /**
+     * Whether the heartbeat timer should be unref'ed, in order not to keep the Node.js event loop active.
+     *
+     * @see https://nodejs.org/api/timers.html#timeoutunref
+     * @default false
+     */
+    autoUnref?: boolean;
+    /**
+     * parameters of the WebSocket permessage-deflate extension (see ws module api docs). Set to false to disable.
+     * @default false
+     */
+    perMessageDeflate?: {
+        threshold: number;
+    };
+    /**
+     * The path to get our client file from, in the case of the server
+     * serving it
+     * @default '/engine.io'
+     */
+    path?: string;
+    /**
+     * Whether we should add a trailing slash to the request path.
+     * @default true
+     */
+    addTrailingSlash?: boolean;
+    /**
+     * Either a single protocol string or an array of protocol strings. These strings are used to indicate sub-protocols,
+     * so that a single server can implement multiple WebSocket sub-protocols (for example, you might want one server to
+     * be able to handle different types of interactions depending on the specified protocol)
+     * @default []
+     */
+    protocols?: string | string[];
+}
+type TransportCtor = {
+    new (o: any): Transport;
+};
+type BaseSocketOptions = Omit<SocketOptions, "transports"> & {
+    transports: TransportCtor[];
+};
+interface HandshakeData {
+    sid: string;
+    upgrades: string[];
+    pingInterval: number;
+    pingTimeout: number;
+    maxPayload: number;
+}
+interface SocketReservedEvents {
+    open: () => void;
+    handshake: (data: HandshakeData) => void;
+    packet: (packet: Packet) => void;
+    packetCreate: (packet: Packet) => void;
+    data: (data: RawData) => void;
+    message: (data: RawData) => void;
+    drain: () => void;
+    flush: () => void;
+    heartbeat: () => void;
+    ping: () => void;
+    pong: () => void;
+    error: (err: string | Error) => void;
+    upgrading: (transport: Transport) => void;
+    upgrade: (transport: Transport) => void;
+    upgradeError: (err: Error) => void;
+    close: (reason: string, description?: CloseDetails | Error) => void;
+}
+type SocketState = "opening" | "open" | "closing" | "closed";
+interface WriteOptions {
+    compress?: boolean;
+}
+/**
+ * This class provides a WebSocket-like interface to connect to an Engine.IO server. The connection will be established
+ * with one of the available low-level transports, like HTTP long-polling, WebSocket or WebTransport.
+ *
+ * This class comes without upgrade mechanism, which means that it will keep the first low-level transport that
+ * successfully establishes the connection.
+ *
+ * In order to allow tree-shaking, there are no transports included, that's why the `transports` option is mandatory.
+ *
+ * @example
+ * import { SocketWithoutUpgrade, WebSocket } from "engine.io-client";
+ *
+ * const socket = new SocketWithoutUpgrade({
+ *   transports: [WebSocket]
+ * });
+ *
+ * socket.on("open", () => {
+ *   socket.send("hello");
+ * });
+ *
+ * @see SocketWithUpgrade
+ * @see Socket
+ */
+export declare class SocketWithoutUpgrade extends Emitter<Record<never, never>, Record<never, never>, SocketReservedEvents> {
+    id: string;
+    transport: Transport;
+    binaryType: BinaryType;
+    readyState: SocketState;
+    writeBuffer: Packet[];
+    protected readonly opts: BaseSocketOptions;
+    protected readonly transports: string[];
+    protected upgrading: boolean;
+    protected setTimeoutFn: typeof setTimeout;
+    private _prevBufferLen;
+    private _pingInterval;
+    private _pingTimeout;
+    private _maxPayload?;
+    private _pingTimeoutTimer;
+    /**
+     * The expiration timestamp of the {@link _pingTimeoutTimer} object is tracked, in case the timer is throttled and the
+     * callback is not fired on time. This can happen for example when a laptop is suspended or when a phone is locked.
+     */
+    private _pingTimeoutTime;
+    private clearTimeoutFn;
+    private readonly _beforeunloadEventListener;
+    private readonly _offlineEventListener;
+    private readonly secure;
+    private readonly hostname;
+    private readonly port;
+    private readonly _transportsByName;
+    /**
+     * The cookie jar will store the cookies sent by the server (Node. js only).
+     */
+    readonly _cookieJar: CookieJar;
+    static priorWebsocketSuccess: boolean;
+    static protocol: number;
+    /**
+     * Socket constructor.
+     *
+     * @param {String|Object} uri - uri or options
+     * @param {Object} opts - options
+     */
+    constructor(uri: string | BaseSocketOptions, opts: BaseSocketOptions);
+    /**
+     * Creates transport of the given type.
+     *
+     * @param {String} name - transport name
+     * @return {Transport}
+     * @private
+     */
+    protected createTransport(name: string): Transport;
+    /**
+     * Initializes transport to use and starts probe.
+     *
+     * @private
+     */
+    private _open;
+    /**
+     * Sets the current transport. Disables the existing one (if any).
+     *
+     * @private
+     */
+    protected setTransport(transport: Transport): void;
+    /**
+     * Called when connection is deemed open.
+     *
+     * @private
+     */
+    protected onOpen(): void;
+    /**
+     * Handles a packet.
+     *
+     * @private
+     */
+    private _onPacket;
+    /**
+     * Called upon handshake completion.
+     *
+     * @param {Object} data - handshake obj
+     * @private
+     */
+    protected onHandshake(data: HandshakeData): void;
+    /**
+     * Sets and resets ping timeout timer based on server pings.
+     *
+     * @private
+     */
+    private _resetPingTimeout;
+    /**
+     * Called on `drain` event
+     *
+     * @private
+     */
+    private _onDrain;
+    /**
+     * Flush write buffers.
+     *
+     * @private
+     */
+    protected flush(): void;
+    /**
+     * Ensure the encoded size of the writeBuffer is below the maxPayload value sent by the server (only for HTTP
+     * long-polling)
+     *
+     * @private
+     */
+    private _getWritablePackets;
+    /**
+     * Checks whether the heartbeat timer has expired but the socket has not yet been notified.
+     *
+     * Note: this method is private for now because it does not really fit the WebSocket API, but if we put it in the
+     * `write()` method then the message would not be buffered by the Socket.IO client.
+     *
+     * @return {boolean}
+     * @private
+     */
+    _hasPingExpired(): boolean;
+    /**
+     * Sends a message.
+     *
+     * @param {String} msg - message.
+     * @param {Object} options.
+     * @param {Function} fn - callback function.
+     * @return {Socket} for chaining.
+     */
+    write(msg: RawData, options?: WriteOptions, fn?: () => void): this;
+    /**
+     * Sends a message. Alias of {@link Socket#write}.
+     *
+     * @param {String} msg - message.
+     * @param {Object} options.
+     * @param {Function} fn - callback function.
+     * @return {Socket} for chaining.
+     */
+    send(msg: RawData, options?: WriteOptions, fn?: () => void): this;
+    /**
+     * Sends a packet.
+     *
+     * @param {String} type: packet type.
+     * @param {String} data.
+     * @param {Object} options.
+     * @param {Function} fn - callback function.
+     * @private
+     */
+    private _sendPacket;
+    /**
+     * Closes the connection.
+     */
+    close(): this;
+    /**
+     * Called upon transport error
+     *
+     * @private
+     */
+    private _onError;
+    /**
+     * Called upon transport close.
+     *
+     * @private
+     */
+    private _onClose;
+}
+/**
+ * This class provides a WebSocket-like interface to connect to an Engine.IO server. The connection will be established
+ * with one of the available low-level transports, like HTTP long-polling, WebSocket or WebTransport.
+ *
+ * This class comes with an upgrade mechanism, which means that once the connection is established with the first
+ * low-level transport, it will try to upgrade to a better transport.
+ *
+ * In order to allow tree-shaking, there are no transports included, that's why the `transports` option is mandatory.
+ *
+ * @example
+ * import { SocketWithUpgrade, WebSocket } from "engine.io-client";
+ *
+ * const socket = new SocketWithUpgrade({
+ *   transports: [WebSocket]
+ * });
+ *
+ * socket.on("open", () => {
+ *   socket.send("hello");
+ * });
+ *
+ * @see SocketWithoutUpgrade
+ * @see Socket
+ */
+export declare class SocketWithUpgrade extends SocketWithoutUpgrade {
+    private _upgrades;
+    onOpen(): void;
+    /**
+     * Probes a transport.
+     *
+     * @param {String} name - transport name
+     * @private
+     */
+    private _probe;
+    onHandshake(data: HandshakeData): void;
+    /**
+     * Filters upgrades, returning only those matching client transports.
+     *
+     * @param {Array} upgrades - server upgrades
+     * @private
+     */
+    private _filterUpgrades;
+}
+/**
+ * This class provides a WebSocket-like interface to connect to an Engine.IO server. The connection will be established
+ * with one of the available low-level transports, like HTTP long-polling, WebSocket or WebTransport.
+ *
+ * This class comes with an upgrade mechanism, which means that once the connection is established with the first
+ * low-level transport, it will try to upgrade to a better transport.
+ *
+ * @example
+ * import { Socket } from "engine.io-client";
+ *
+ * const socket = new Socket();
+ *
+ * socket.on("open", () => {
+ *   socket.send("hello");
+ * });
+ *
+ * @see SocketWithoutUpgrade
+ * @see SocketWithUpgrade
+ */
+export declare class Socket extends SocketWithUpgrade {
+    constructor(uri?: string, opts?: SocketOptions);
+    constructor(opts: SocketOptions);
+}
+export {};

node_modules/engine.io-client/build/cjs/socket.js

@@ -0,0 +1,765 @@
+"use strict";
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Socket = exports.SocketWithUpgrade = exports.SocketWithoutUpgrade = void 0;
+const index_js_1 = require("./transports/index.js");
+const util_js_1 = require("./util.js");
+const parseqs_js_1 = require("./contrib/parseqs.js");
+const parseuri_js_1 = require("./contrib/parseuri.js");
+const component_emitter_1 = require("@socket.io/component-emitter");
+const engine_io_parser_1 = require("engine.io-parser");
+const globals_node_js_1 = require("./globals.node.js");
+const debug_1 = __importDefault(require("debug")); // debug()
+const debug = (0, debug_1.default)("engine.io-client:socket"); // debug()
+const withEventListeners = typeof addEventListener === "function" &&
+    typeof removeEventListener === "function";
+const OFFLINE_EVENT_LISTENERS = [];
+if (withEventListeners) {
+    // within a ServiceWorker, any event handler for the 'offline' event must be added on the initial evaluation of the
+    // script, so we create one single event listener here which will forward the event to the socket instances
+    addEventListener("offline", () => {
+        debug("closing %d connection(s) because the network was lost", OFFLINE_EVENT_LISTENERS.length);
+        OFFLINE_EVENT_LISTENERS.forEach((listener) => listener());
+    }, false);
+}
+/**
+ * This class provides a WebSocket-like interface to connect to an Engine.IO server. The connection will be established
+ * with one of the available low-level transports, like HTTP long-polling, WebSocket or WebTransport.
+ *
+ * This class comes without upgrade mechanism, which means that it will keep the first low-level transport that
+ * successfully establishes the connection.
+ *
+ * In order to allow tree-shaking, there are no transports included, that's why the `transports` option is mandatory.
+ *
+ * @example
+ * import { SocketWithoutUpgrade, WebSocket } from "engine.io-client";
+ *
+ * const socket = new SocketWithoutUpgrade({
+ *   transports: [WebSocket]
+ * });
+ *
+ * socket.on("open", () => {
+ *   socket.send("hello");
+ * });
+ *
+ * @see SocketWithUpgrade
+ * @see Socket
+ */
+class SocketWithoutUpgrade extends component_emitter_1.Emitter {
+    /**
+     * Socket constructor.
+     *
+     * @param {String|Object} uri - uri or options
+     * @param {Object} opts - options
+     */
+    constructor(uri, opts) {
+        super();
+        this.binaryType = globals_node_js_1.defaultBinaryType;
+        this.writeBuffer = [];
+        this._prevBufferLen = 0;
+        this._pingInterval = -1;
+        this._pingTimeout = -1;
+        this._maxPayload = -1;
+        /**
+         * The expiration timestamp of the {@link _pingTimeoutTimer} object is tracked, in case the timer is throttled and the
+         * callback is not fired on time. This can happen for example when a laptop is suspended or when a phone is locked.
+         */
+        this._pingTimeoutTime = Infinity;
+        if (uri && "object" === typeof uri) {
+            opts = uri;
+            uri = null;
+        }
+        if (uri) {
+            const parsedUri = (0, parseuri_js_1.parse)(uri);
+            opts.hostname = parsedUri.host;
+            opts.secure =
+                parsedUri.protocol === "https" || parsedUri.protocol === "wss";
+            opts.port = parsedUri.port;
+            if (parsedUri.query)
+                opts.query = parsedUri.query;
+        }
+        else if (opts.host) {
+            opts.hostname = (0, parseuri_js_1.parse)(opts.host).host;
+        }
+        (0, util_js_1.installTimerFunctions)(this, opts);
+        this.secure =
+            null != opts.secure
+                ? opts.secure
+                : typeof location !== "undefined" && "https:" === location.protocol;
+        if (opts.hostname && !opts.port) {
+            // if no port is specified manually, use the protocol default
+            opts.port = this.secure ? "443" : "80";
+        }
+        this.hostname =
+            opts.hostname ||
+                (typeof location !== "undefined" ? location.hostname : "localhost");
+        this.port =
+            opts.port ||
+                (typeof location !== "undefined" && location.port
+                    ? location.port
+                    : this.secure
+                        ? "443"
+                        : "80");
+        this.transports = [];
+        this._transportsByName = {};
+        opts.transports.forEach((t) => {
+            const transportName = t.prototype.name;
+            this.transports.push(transportName);
+            this._transportsByName[transportName] = t;
+        });
+        this.opts = Object.assign({
+            path: "/engine.io",
+            agent: false,
+            withCredentials: false,
+            upgrade: true,
+            timestampParam: "t",
+            rememberUpgrade: false,
+            addTrailingSlash: true,
+            rejectUnauthorized: true,
+            perMessageDeflate: {
+                threshold: 1024,
+            },
+            transportOptions: {},
+            closeOnBeforeunload: false,
+        }, opts);
+        this.opts.path =
+            this.opts.path.replace(/\/$/, "") +
+                (this.opts.addTrailingSlash ? "/" : "");
+        if (typeof this.opts.query === "string") {
+            this.opts.query = (0, parseqs_js_1.decode)(this.opts.query);
+        }
+        if (withEventListeners) {
+            if (this.opts.closeOnBeforeunload) {
+                // Firefox closes the connection when the "beforeunload" event is emitted but not Chrome. This event listener
+                // ensures every browser behaves the same (no "disconnect" event at the Socket.IO level when the page is
+                // closed/reloaded)
+                this._beforeunloadEventListener = () => {
+                    if (this.transport) {
+                        // silently close the transport
+                        this.transport.removeAllListeners();
+                        this.transport.close();
+                    }
+                };
+                addEventListener("beforeunload", this._beforeunloadEventListener, false);
+            }
+            if (this.hostname !== "localhost") {
+                debug("adding listener for the 'offline' event");
+                this._offlineEventListener = () => {
+                    this._onClose("transport close", {
+                        description: "network connection lost",
+                    });
+                };
+                OFFLINE_EVENT_LISTENERS.push(this._offlineEventListener);
+            }
+        }
+        if (this.opts.withCredentials) {
+            this._cookieJar = (0, globals_node_js_1.createCookieJar)();
+        }
+        this._open();
+    }
+    /**
+     * Creates transport of the given type.
+     *
+     * @param {String} name - transport name
+     * @return {Transport}
+     * @private
+     */
+    createTransport(name) {
+        debug('creating transport "%s"', name);
+        const query = Object.assign({}, this.opts.query);
+        // append engine.io protocol identifier
+        query.EIO = engine_io_parser_1.protocol;
+        // transport name
+        query.transport = name;
+        // session id if we already have one
+        if (this.id)
+            query.sid = this.id;
+        const opts = Object.assign({}, this.opts, {
+            query,
+            socket: this,
+            hostname: this.hostname,
+            secure: this.secure,
+            port: this.port,
+        }, this.opts.transportOptions[name]);
+        debug("options: %j", opts);
+        return new this._transportsByName[name](opts);
+    }
+    /**
+     * Initializes transport to use and starts probe.
+     *
+     * @private
+     */
+    _open() {
+        if (this.transports.length === 0) {
+            // Emit error on next tick so it can be listened to
+            this.setTimeoutFn(() => {
+                this.emitReserved("error", "No transports available");
+            }, 0);
+            return;
+        }
+        const transportName = this.opts.rememberUpgrade &&
+            SocketWithoutUpgrade.priorWebsocketSuccess &&
+            this.transports.indexOf("websocket") !== -1
+            ? "websocket"
+            : this.transports[0];
+        this.readyState = "opening";
+        const transport = this.createTransport(transportName);
+        transport.open();
+        this.setTransport(transport);
+    }
+    /**
+     * Sets the current transport. Disables the existing one (if any).
+     *
+     * @private
+     */
+    setTransport(transport) {
+        debug("setting transport %s", transport.name);
+        if (this.transport) {
+            debug("clearing existing transport %s", this.transport.name);
+            this.transport.removeAllListeners();
+        }
+        // set up transport
+        this.transport = transport;
+        // set up transport listeners
+        transport
+            .on("drain", this._onDrain.bind(this))
+            .on("packet", this._onPacket.bind(this))
+            .on("error", this._onError.bind(this))
+            .on("close", (reason) => this._onClose("transport close", reason));
+    }
+    /**
+     * Called when connection is deemed open.
+     *
+     * @private
+     */
+    onOpen() {
+        debug("socket open");
+        this.readyState = "open";
+        SocketWithoutUpgrade.priorWebsocketSuccess =
+            "websocket" === this.transport.name;
+        this.emitReserved("open");
+        this.flush();
+    }
+    /**
+     * Handles a packet.
+     *
+     * @private
+     */
+    _onPacket(packet) {
+        if ("opening" === this.readyState ||
+            "open" === this.readyState ||
+            "closing" === this.readyState) {
+            debug('socket receive: type "%s", data "%s"', packet.type, packet.data);
+            this.emitReserved("packet", packet);
+            // Socket is live - any packet counts
+            this.emitReserved("heartbeat");
+            switch (packet.type) {
+                case "open":
+                    this.onHandshake(JSON.parse(packet.data));
+                    break;
+                case "ping":
+                    this._sendPacket("pong");
+                    this.emitReserved("ping");
+                    this.emitReserved("pong");
+                    this._resetPingTimeout();
+                    break;
+                case "error":
+                    const err = new Error("server error");
+                    // @ts-ignore
+                    err.code = packet.data;
+                    this._onError(err);
+                    break;
+                case "message":
+                    this.emitReserved("data", packet.data);
+                    this.emitReserved("message", packet.data);
+                    break;
+            }
+        }
+        else {
+            debug('packet received with socket readyState "%s"', this.readyState);
+        }
+    }
+    /**
+     * Called upon handshake completion.
+     *
+     * @param {Object} data - handshake obj
+     * @private
+     */
+    onHandshake(data) {
+        this.emitReserved("handshake", data);
+        this.id = data.sid;
+        this.transport.query.sid = data.sid;
+        this._pingInterval = data.pingInterval;
+        this._pingTimeout = data.pingTimeout;
+        this._maxPayload = data.maxPayload;
+        this.onOpen();
+        // In case open handler closes socket
+        if ("closed" === this.readyState)
+            return;
+        this._resetPingTimeout();
+    }
+    /**
+     * Sets and resets ping timeout timer based on server pings.
+     *
+     * @private
+     */
+    _resetPingTimeout() {
+        this.clearTimeoutFn(this._pingTimeoutTimer);
+        const delay = this._pingInterval + this._pingTimeout;
+        this._pingTimeoutTime = Date.now() + delay;
+        this._pingTimeoutTimer = this.setTimeoutFn(() => {
+            this._onClose("ping timeout");
+        }, delay);
+        if (this.opts.autoUnref) {
+            this._pingTimeoutTimer.unref();
+        }
+    }
+    /**
+     * Called on `drain` event
+     *
+     * @private
+     */
+    _onDrain() {
+        this.writeBuffer.splice(0, this._prevBufferLen);
+        // setting prevBufferLen = 0 is very important
+        // for example, when upgrading, upgrade packet is sent over,
+        // and a nonzero prevBufferLen could cause problems on `drain`
+        this._prevBufferLen = 0;
+        if (0 === this.writeBuffer.length) {
+            this.emitReserved("drain");
+        }
+        else {
+            this.flush();
+        }
+    }
+    /**
+     * Flush write buffers.
+     *
+     * @private
+     */
+    flush() {
+        if ("closed" !== this.readyState &&
+            this.transport.writable &&
+            !this.upgrading &&
+            this.writeBuffer.length) {
+            const packets = this._getWritablePackets();
+            debug("flushing %d packets in socket", packets.length);
+            this.transport.send(packets);
+            // keep track of current length of writeBuffer
+            // splice writeBuffer and callbackBuffer on `drain`
+            this._prevBufferLen = packets.length;
+            this.emitReserved("flush");
+        }
+    }
+    /**
+     * Ensure the encoded size of the writeBuffer is below the maxPayload value sent by the server (only for HTTP
+     * long-polling)
+     *
+     * @private
+     */
+    _getWritablePackets() {
+        const shouldCheckPayloadSize = this._maxPayload &&
+            this.transport.name === "polling" &&
+            this.writeBuffer.length > 1;
+        if (!shouldCheckPayloadSize) {
+            return this.writeBuffer;
+        }
+        let payloadSize = 1; // first packet type
+        for (let i = 0; i < this.writeBuffer.length; i++) {
+            const data = this.writeBuffer[i].data;
+            if (data) {
+                payloadSize += (0, util_js_1.byteLength)(data);
+            }
+            if (i > 0 && payloadSize > this._maxPayload) {
+                debug("only send %d out of %d packets", i, this.writeBuffer.length);
+                return this.writeBuffer.slice(0, i);
+            }
+            payloadSize += 2; // separator + packet type
+        }
+        debug("payload size is %d (max: %d)", payloadSize, this._maxPayload);
+        return this.writeBuffer;
+    }
+    /**
+     * Checks whether the heartbeat timer has expired but the socket has not yet been notified.
+     *
+     * Note: this method is private for now because it does not really fit the WebSocket API, but if we put it in the
+     * `write()` method then the message would not be buffered by the Socket.IO client.
+     *
+     * @return {boolean}
+     * @private
+     */
+    /* private */ _hasPingExpired() {
+        if (!this._pingTimeoutTime)
+            return true;
+        const hasExpired = Date.now() > this._pingTimeoutTime;
+        if (hasExpired) {
+            debug("throttled timer detected, scheduling connection close");
+            this._pingTimeoutTime = 0;
+            (0, globals_node_js_1.nextTick)(() => {
+                this._onClose("ping timeout");
+            }, this.setTimeoutFn);
+        }
+        return hasExpired;
+    }
+    /**
+     * Sends a message.
+     *
+     * @param {String} msg - message.
+     * @param {Object} options.
+     * @param {Function} fn - callback function.
+     * @return {Socket} for chaining.
+     */
+    write(msg, options, fn) {
+        this._sendPacket("message", msg, options, fn);
+        return this;
+    }
+    /**
+     * Sends a message. Alias of {@link Socket#write}.
+     *
+     * @param {String} msg - message.
+     * @param {Object} options.
+     * @param {Function} fn - callback function.
+     * @return {Socket} for chaining.
+     */
+    send(msg, options, fn) {
+        this._sendPacket("message", msg, options, fn);
+        return this;
+    }
+    /**
+     * Sends a packet.
+     *
+     * @param {String} type: packet type.
+     * @param {String} data.
+     * @param {Object} options.
+     * @param {Function} fn - callback function.
+     * @private
+     */
+    _sendPacket(type, data, options, fn) {
+        if ("function" === typeof data) {
+            fn = data;
+            data = undefined;
+        }
+        if ("function" === typeof options) {
+            fn = options;
+            options = null;
+        }
+        if ("closing" === this.readyState || "closed" === this.readyState) {
+            return;
+        }
+        options = options || {};
+        options.compress = false !== options.compress;
+        const packet = {
+            type: type,
+            data: data,
+            options: options,
+        };
+        this.emitReserved("packetCreate", packet);
+        this.writeBuffer.push(packet);
+        if (fn)
+            this.once("flush", fn);
+        this.flush();
+    }
+    /**
+     * Closes the connection.
+     */
+    close() {
+        const close = () => {
+            this._onClose("forced close");
+            debug("socket closing - telling transport to close");
+            this.transport.close();
+        };
+        const cleanupAndClose = () => {
+            this.off("upgrade", cleanupAndClose);
+            this.off("upgradeError", cleanupAndClose);
+            close();
+        };
+        const waitForUpgrade = () => {
+            // wait for upgrade to finish since we can't send packets while pausing a transport
+            this.once("upgrade", cleanupAndClose);
+            this.once("upgradeError", cleanupAndClose);
+        };
+        if ("opening" === this.readyState || "open" === this.readyState) {
+            this.readyState = "closing";
+            if (this.writeBuffer.length) {
+                this.once("drain", () => {
+                    if (this.upgrading) {
+                        waitForUpgrade();
+                    }
+                    else {
+                        close();
+                    }
+                });
+            }
+            else if (this.upgrading) {
+                waitForUpgrade();
+            }
+            else {
+                close();
+            }
+        }
+        return this;
+    }
+    /**
+     * Called upon transport error
+     *
+     * @private
+     */
+    _onError(err) {
+        debug("socket error %j", err);
+        SocketWithoutUpgrade.priorWebsocketSuccess = false;
+        if (this.opts.tryAllTransports &&
+            this.transports.length > 1 &&
+            this.readyState === "opening") {
+            debug("trying next transport");
+            this.transports.shift();
+            return this._open();
+        }
+        this.emitReserved("error", err);
+        this._onClose("transport error", err);
+    }
+    /**
+     * Called upon transport close.
+     *
+     * @private
+     */
+    _onClose(reason, description) {
+        if ("opening" === this.readyState ||
+            "open" === this.readyState ||
+            "closing" === this.readyState) {
+            debug('socket close with reason: "%s"', reason);
+            // clear timers
+            this.clearTimeoutFn(this._pingTimeoutTimer);
+            // stop event from firing again for transport
+            this.transport.removeAllListeners("close");
+            // ensure transport won't stay open
+            this.transport.close();
+            // ignore further transport communication
+            this.transport.removeAllListeners();
+            if (withEventListeners) {
+                if (this._beforeunloadEventListener) {
+                    removeEventListener("beforeunload", this._beforeunloadEventListener, false);
+                }
+                if (this._offlineEventListener) {
+                    const i = OFFLINE_EVENT_LISTENERS.indexOf(this._offlineEventListener);
+                    if (i !== -1) {
+                        debug("removing listener for the 'offline' event");
+                        OFFLINE_EVENT_LISTENERS.splice(i, 1);
+                    }
+                }
+            }
+            // set ready state
+            this.readyState = "closed";
+            // clear session id
+            this.id = null;
+            // emit close event
+            this.emitReserved("close", reason, description);
+            // clean buffers after, so users can still
+            // grab the buffers on `close` event
+            this.writeBuffer = [];
+            this._prevBufferLen = 0;
+        }
+    }
+}
+exports.SocketWithoutUpgrade = SocketWithoutUpgrade;
+SocketWithoutUpgrade.protocol = engine_io_parser_1.protocol;
+/**
+ * This class provides a WebSocket-like interface to connect to an Engine.IO server. The connection will be established
+ * with one of the available low-level transports, like HTTP long-polling, WebSocket or WebTransport.
+ *
+ * This class comes with an upgrade mechanism, which means that once the connection is established with the first
+ * low-level transport, it will try to upgrade to a better transport.
+ *
+ * In order to allow tree-shaking, there are no transports included, that's why the `transports` option is mandatory.
+ *
+ * @example
+ * import { SocketWithUpgrade, WebSocket } from "engine.io-client";
+ *
+ * const socket = new SocketWithUpgrade({
+ *   transports: [WebSocket]
+ * });
+ *
+ * socket.on("open", () => {
+ *   socket.send("hello");
+ * });
+ *
+ * @see SocketWithoutUpgrade
+ * @see Socket
+ */
+class SocketWithUpgrade extends SocketWithoutUpgrade {
+    constructor() {
+        super(...arguments);
+        this._upgrades = [];
+    }
+    onOpen() {
+        super.onOpen();
+        if ("open" === this.readyState && this.opts.upgrade) {
+            debug("starting upgrade probes");
+            for (let i = 0; i < this._upgrades.length; i++) {
+                this._probe(this._upgrades[i]);
+            }
+        }
+    }
+    /**
+     * Probes a transport.
+     *
+     * @param {String} name - transport name
+     * @private
+     */
+    _probe(name) {
+        debug('probing transport "%s"', name);
+        let transport = this.createTransport(name);
+        let failed = false;
+        SocketWithoutUpgrade.priorWebsocketSuccess = false;
+        const onTransportOpen = () => {
+            if (failed)
+                return;
+            debug('probe transport "%s" opened', name);
+            transport.send([{ type: "ping", data: "probe" }]);
+            transport.once("packet", (msg) => {
+                if (failed)
+                    return;
+                if ("pong" === msg.type && "probe" === msg.data) {
+                    debug('probe transport "%s" pong', name);
+                    this.upgrading = true;
+                    this.emitReserved("upgrading", transport);
+                    if (!transport)
+                        return;
+                    SocketWithoutUpgrade.priorWebsocketSuccess =
+                        "websocket" === transport.name;
+                    debug('pausing current transport "%s"', this.transport.name);
+                    this.transport.pause(() => {
+                        if (failed)
+                            return;
+                        if ("closed" === this.readyState)
+                            return;
+                        debug("changing transport and sending upgrade packet");
+                        cleanup();
+                        this.setTransport(transport);
+                        transport.send([{ type: "upgrade" }]);
+                        this.emitReserved("upgrade", transport);
+                        transport = null;
+                        this.upgrading = false;
+                        this.flush();
+                    });
+                }
+                else {
+                    debug('probe transport "%s" failed', name);
+                    const err = new Error("probe error");
+                    // @ts-ignore
+                    err.transport = transport.name;
+                    this.emitReserved("upgradeError", err);
+                }
+            });
+        };
+        function freezeTransport() {
+            if (failed)
+                return;
+            // Any callback called by transport should be ignored since now
+            failed = true;
+            cleanup();
+            transport.close();
+            transport = null;
+        }
+        // Handle any error that happens while probing
+        const onerror = (err) => {
+            const error = new Error("probe error: " + err);
+            // @ts-ignore
+            error.transport = transport.name;
+            freezeTransport();
+            debug('probe transport "%s" failed because of error: %s', name, err);
+            this.emitReserved("upgradeError", error);
+        };
+        function onTransportClose() {
+            onerror("transport closed");
+        }
+        // When the socket is closed while we're probing
+        function onclose() {
+            onerror("socket closed");
+        }
+        // When the socket is upgraded while we're probing
+        function onupgrade(to) {
+            if (transport && to.name !== transport.name) {
+                debug('"%s" works - aborting "%s"', to.name, transport.name);
+                freezeTransport();
+            }
+        }
+        // Remove all listeners on the transport and on self
+        const cleanup = () => {
+            transport.removeListener("open", onTransportOpen);
+            transport.removeListener("error", onerror);
+            transport.removeListener("close", onTransportClose);
+            this.off("close", onclose);
+            this.off("upgrading", onupgrade);
+        };
+        transport.once("open", onTransportOpen);
+        transport.once("error", onerror);
+        transport.once("close", onTransportClose);
+        this.once("close", onclose);
+        this.once("upgrading", onupgrade);
+        if (this._upgrades.indexOf("webtransport") !== -1 &&
+            name !== "webtransport") {
+            // favor WebTransport
+            this.setTimeoutFn(() => {
+                if (!failed) {
+                    transport.open();
+                }
+            }, 200);
+        }
+        else {
+            transport.open();
+        }
+    }
+    onHandshake(data) {
+        this._upgrades = this._filterUpgrades(data.upgrades);
+        super.onHandshake(data);
+    }
+    /**
+     * Filters upgrades, returning only those matching client transports.
+     *
+     * @param {Array} upgrades - server upgrades
+     * @private
+     */
+    _filterUpgrades(upgrades) {
+        const filteredUpgrades = [];
+        for (let i = 0; i < upgrades.length; i++) {
+            if (~this.transports.indexOf(upgrades[i]))
+                filteredUpgrades.push(upgrades[i]);
+        }
+        return filteredUpgrades;
+    }
+}
+exports.SocketWithUpgrade = SocketWithUpgrade;
+/**
+ * This class provides a WebSocket-like interface to connect to an Engine.IO server. The connection will be established
+ * with one of the available low-level transports, like HTTP long-polling, WebSocket or WebTransport.
+ *
+ * This class comes with an upgrade mechanism, which means that once the connection is established with the first
+ * low-level transport, it will try to upgrade to a better transport.
+ *
+ * @example
+ * import { Socket } from "engine.io-client";
+ *
+ * const socket = new Socket();
+ *
+ * socket.on("open", () => {
+ *   socket.send("hello");
+ * });
+ *
+ * @see SocketWithoutUpgrade
+ * @see SocketWithUpgrade
+ */
+class Socket extends SocketWithUpgrade {
+    constructor(uri, opts = {}) {
+        const o = typeof uri === "object" ? uri : opts;
+        if (!o.transports ||
+            (o.transports && typeof o.transports[0] === "string")) {
+            o.transports = (o.transports || ["polling", "websocket", "webtransport"])
+                .map((transportName) => index_js_1.transports[transportName])
+                .filter((t) => !!t);
+        }
+        super(uri, o);
+    }
+}
+exports.Socket = Socket;

node_modules/engine.io-client/build/cjs/transport.d.ts

@@ -0,0 +1,106 @@
+import type { Packet, RawData } from "engine.io-parser";
+import { Emitter } from "@socket.io/component-emitter";
+import type { Socket, SocketOptions } from "./socket.js";
+export declare class TransportError extends Error {
+    readonly description: any;
+    readonly context: any;
+    readonly type = "TransportError";
+    constructor(reason: string, description: any, context: any);
+}
+export interface CloseDetails {
+    description: string;
+    context?: unknown;
+}
+interface TransportReservedEvents {
+    open: () => void;
+    error: (err: TransportError) => void;
+    packet: (packet: Packet) => void;
+    close: (details?: CloseDetails) => void;
+    poll: () => void;
+    pollComplete: () => void;
+    drain: () => void;
+}
+type TransportState = "opening" | "open" | "closed" | "pausing" | "paused";
+export declare abstract class Transport extends Emitter<Record<never, never>, Record<never, never>, TransportReservedEvents> {
+    query: Record<string, string>;
+    writable: boolean;
+    protected opts: SocketOptions;
+    protected supportsBinary: boolean;
+    protected readyState: TransportState;
+    protected socket: Socket;
+    protected setTimeoutFn: typeof setTimeout;
+    /**
+     * Transport abstract constructor.
+     *
+     * @param {Object} opts - options
+     * @protected
+     */
+    constructor(opts: any);
+    /**
+     * Emits an error.
+     *
+     * @param {String} reason
+     * @param description
+     * @param context - the error context
+     * @return {Transport} for chaining
+     * @protected
+     */
+    protected onError(reason: string, description: any, context?: any): this;
+    /**
+     * Opens the transport.
+     */
+    open(): this;
+    /**
+     * Closes the transport.
+     */
+    close(): this;
+    /**
+     * Sends multiple packets.
+     *
+     * @param {Array} packets
+     */
+    send(packets: any): void;
+    /**
+     * Called upon open
+     *
+     * @protected
+     */
+    protected onOpen(): void;
+    /**
+     * Called with data.
+     *
+     * @param {String} data
+     * @protected
+     */
+    protected onData(data: RawData): void;
+    /**
+     * Called with a decoded packet.
+     *
+     * @protected
+     */
+    protected onPacket(packet: Packet): void;
+    /**
+     * Called upon close.
+     *
+     * @protected
+     */
+    protected onClose(details?: CloseDetails): void;
+    /**
+     * The name of the transport
+     */
+    abstract get name(): string;
+    /**
+     * Pauses the transport, in order not to lose packets during an upgrade.
+     *
+     * @param onPause
+     */
+    pause(onPause: () => void): void;
+    protected createUri(schema: string, query?: Record<string, unknown>): string;
+    private _hostname;
+    private _port;
+    private _query;
+    protected abstract doOpen(): any;
+    protected abstract doClose(): any;
+    protected abstract write(packets: Packet[]): any;
+}
+export {};

node_modules/engine.io-client/build/cjs/transport.js

@@ -0,0 +1,153 @@
+"use strict";
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Transport = exports.TransportError = void 0;
+const engine_io_parser_1 = require("engine.io-parser");
+const component_emitter_1 = require("@socket.io/component-emitter");
+const util_js_1 = require("./util.js");
+const parseqs_js_1 = require("./contrib/parseqs.js");
+const debug_1 = __importDefault(require("debug")); // debug()
+const debug = (0, debug_1.default)("engine.io-client:transport"); // debug()
+class TransportError extends Error {
+    constructor(reason, description, context) {
+        super(reason);
+        this.description = description;
+        this.context = context;
+        this.type = "TransportError";
+    }
+}
+exports.TransportError = TransportError;
+class Transport extends component_emitter_1.Emitter {
+    /**
+     * Transport abstract constructor.
+     *
+     * @param {Object} opts - options
+     * @protected
+     */
+    constructor(opts) {
+        super();
+        this.writable = false;
+        (0, util_js_1.installTimerFunctions)(this, opts);
+        this.opts = opts;
+        this.query = opts.query;
+        this.socket = opts.socket;
+        this.supportsBinary = !opts.forceBase64;
+    }
+    /**
+     * Emits an error.
+     *
+     * @param {String} reason
+     * @param description
+     * @param context - the error context
+     * @return {Transport} for chaining
+     * @protected
+     */
+    onError(reason, description, context) {
+        super.emitReserved("error", new TransportError(reason, description, context));
+        return this;
+    }
+    /**
+     * Opens the transport.
+     */
+    open() {
+        this.readyState = "opening";
+        this.doOpen();
+        return this;
+    }
+    /**
+     * Closes the transport.
+     */
+    close() {
+        if (this.readyState === "opening" || this.readyState === "open") {
+            this.doClose();
+            this.onClose();
+        }
+        return this;
+    }
+    /**
+     * Sends multiple packets.
+     *
+     * @param {Array} packets
+     */
+    send(packets) {
+        if (this.readyState === "open") {
+            this.write(packets);
+        }
+        else {
+            // this might happen if the transport was silently closed in the beforeunload event handler
+            debug("transport is not open, discarding packets");
+        }
+    }
+    /**
+     * Called upon open
+     *
+     * @protected
+     */
+    onOpen() {
+        this.readyState = "open";
+        this.writable = true;
+        super.emitReserved("open");
+    }
+    /**
+     * Called with data.
+     *
+     * @param {String} data
+     * @protected
+     */
+    onData(data) {
+        const packet = (0, engine_io_parser_1.decodePacket)(data, this.socket.binaryType);
+        this.onPacket(packet);
+    }
+    /**
+     * Called with a decoded packet.
+     *
+     * @protected
+     */
+    onPacket(packet) {
+        super.emitReserved("packet", packet);
+    }
+    /**
+     * Called upon close.
+     *
+     * @protected
+     */
+    onClose(details) {
+        this.readyState = "closed";
+        super.emitReserved("close", details);
+    }
+    /**
+     * Pauses the transport, in order not to lose packets during an upgrade.
+     *
+     * @param onPause
+     */
+    pause(onPause) { }
+    createUri(schema, query = {}) {
+        return (schema +
+            "://" +
+            this._hostname() +
+            this._port() +
+            this.opts.path +
+            this._query(query));
+    }
+    _hostname() {
+        const hostname = this.opts.hostname;
+        return hostname.indexOf(":") === -1 ? hostname : "[" + hostname + "]";
+    }
+    _port() {
+        if (this.opts.port &&
+            ((this.opts.secure && Number(this.opts.port !== 443)) ||
+                (!this.opts.secure && Number(this.opts.port) !== 80))) {
+            return ":" + this.opts.port;
+        }
+        else {
+            return "";
+        }
+    }
+    _query(query) {
+        const encodedQuery = (0, parseqs_js_1.encode)(query);
+        return encodedQuery.length ? "?" + encodedQuery : "";
+    }
+}
+exports.Transport = Transport;

node_modules/engine.io-client/build/cjs/transports/index.d.ts

@@ -0,0 +1,8 @@
+import { XHR } from "./polling-xhr.node.js";
+import { WS } from "./websocket.node.js";
+import { WT } from "./webtransport.js";
+export declare const transports: {
+    websocket: typeof WS;
+    webtransport: typeof WT;
+    polling: typeof XHR;
+};

node_modules/engine.io-client/build/cjs/transports/index.js

@@ -0,0 +1,11 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.transports = void 0;
+const polling_xhr_node_js_1 = require("./polling-xhr.node.js");
+const websocket_node_js_1 = require("./websocket.node.js");
+const webtransport_js_1 = require("./webtransport.js");
+exports.transports = {
+    websocket: websocket_node_js_1.WS,
+    webtransport: webtransport_js_1.WT,
+    polling: polling_xhr_node_js_1.XHR,
+};

node_modules/engine.io-client/build/cjs/transports/polling-fetch.d.ts

@@ -0,0 +1,15 @@
+import { Polling } from "./polling.js";
+/**
+ * HTTP long-polling based on the built-in `fetch()` method.
+ *
+ * Usage: browser, Node.js (since v18), Deno, Bun
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/fetch
+ * @see https://caniuse.com/fetch
+ * @see https://nodejs.org/api/globals.html#fetch
+ */
+export declare class Fetch extends Polling {
+    doPoll(): void;
+    doWrite(data: string, callback: () => void): void;
+    private _fetch;
+}

node_modules/engine.io-client/build/cjs/transports/polling-fetch.js

@@ -0,0 +1,60 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Fetch = void 0;
+const polling_js_1 = require("./polling.js");
+/**
+ * HTTP long-polling based on the built-in `fetch()` method.
+ *
+ * Usage: browser, Node.js (since v18), Deno, Bun
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/fetch
+ * @see https://caniuse.com/fetch
+ * @see https://nodejs.org/api/globals.html#fetch
+ */
+class Fetch extends polling_js_1.Polling {
+    doPoll() {
+        this._fetch()
+            .then((res) => {
+            if (!res.ok) {
+                return this.onError("fetch read error", res.status, res);
+            }
+            res.text().then((data) => this.onData(data));
+        })
+            .catch((err) => {
+            this.onError("fetch read error", err);
+        });
+    }
+    doWrite(data, callback) {
+        this._fetch(data)
+            .then((res) => {
+            if (!res.ok) {
+                return this.onError("fetch write error", res.status, res);
+            }
+            callback();
+        })
+            .catch((err) => {
+            this.onError("fetch write error", err);
+        });
+    }
+    _fetch(data) {
+        var _a;
+        const isPost = data !== undefined;
+        const headers = new Headers(this.opts.extraHeaders);
+        if (isPost) {
+            headers.set("content-type", "text/plain;charset=UTF-8");
+        }
+        (_a = this.socket._cookieJar) === null || _a === void 0 ? void 0 : _a.appendCookies(headers);
+        return fetch(this.uri(), {
+            method: isPost ? "POST" : "GET",
+            body: isPost ? data : null,
+            headers,
+            credentials: this.opts.withCredentials ? "include" : "omit",
+        }).then((res) => {
+            var _a;
+            // @ts-ignore getSetCookie() was added in Node.js v19.7.0
+            (_a = this.socket._cookieJar) === null || _a === void 0 ? void 0 : _a.parseCookies(res.headers.getSetCookie());
+            return res;
+        });
+    }
+}
+exports.Fetch = Fetch;

node_modules/engine.io-client/build/cjs/transports/polling-xhr.d.ts

@@ -0,0 +1,108 @@
+import { Polling } from "./polling.js";
+import { Emitter } from "@socket.io/component-emitter";
+import type { SocketOptions } from "../socket.js";
+import type { CookieJar } from "../globals.node.js";
+import type { RawData } from "engine.io-parser";
+export declare abstract class BaseXHR extends Polling {
+    protected readonly xd: boolean;
+    private pollXhr;
+    /**
+     * XHR Polling constructor.
+     *
+     * @param {Object} opts
+     * @package
+     */
+    constructor(opts: any);
+    /**
+     * Creates a request.
+     *
+     * @private
+     */
+    abstract request(opts?: Record<string, any>): any;
+    /**
+     * Sends data.
+     *
+     * @param {String} data to send.
+     * @param {Function} called upon flush.
+     * @private
+     */
+    doWrite(data: any, fn: any): void;
+    /**
+     * Starts a poll cycle.
+     *
+     * @private
+     */
+    doPoll(): void;
+}
+interface RequestReservedEvents {
+    success: () => void;
+    data: (data: RawData) => void;
+    error: (err: number | Error, context: unknown) => void;
+}
+export type RequestOptions = SocketOptions & {
+    method?: string;
+    data?: RawData;
+    xd: boolean;
+    cookieJar: CookieJar;
+};
+export declare class Request extends Emitter<Record<never, never>, Record<never, never>, RequestReservedEvents> {
+    private readonly createRequest;
+    private readonly _opts;
+    private readonly _method;
+    private readonly _uri;
+    private readonly _data;
+    private _xhr;
+    private setTimeoutFn;
+    private _index;
+    static requestsCount: number;
+    static requests: {};
+    /**
+     * Request constructor
+     *
+     * @param {Object} options
+     * @package
+     */
+    constructor(createRequest: (opts: RequestOptions) => XMLHttpRequest, uri: string, opts: RequestOptions);
+    /**
+     * Creates the XHR object and sends the request.
+     *
+     * @private
+     */
+    private _create;
+    /**
+     * Called upon error.
+     *
+     * @private
+     */
+    private _onError;
+    /**
+     * Cleans up house.
+     *
+     * @private
+     */
+    private _cleanup;
+    /**
+     * Called upon load.
+     *
+     * @private
+     */
+    private _onLoad;
+    /**
+     * Aborts the request.
+     *
+     * @package
+     */
+    abort(): void;
+}
+/**
+ * HTTP long-polling based on the built-in `XMLHttpRequest` object.
+ *
+ * Usage: browser
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest
+ */
+export declare class XHR extends BaseXHR {
+    constructor(opts: any);
+    request(opts?: Record<string, any>): Request;
+}
+export {};

node_modules/engine.io-client/build/cjs/transports/polling-xhr.js

@@ -0,0 +1,285 @@
+"use strict";
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.XHR = exports.Request = exports.BaseXHR = void 0;
+const polling_js_1 = require("./polling.js");
+const component_emitter_1 = require("@socket.io/component-emitter");
+const util_js_1 = require("../util.js");
+const globals_node_js_1 = require("../globals.node.js");
+const has_cors_js_1 = require("../contrib/has-cors.js");
+const debug_1 = __importDefault(require("debug")); // debug()
+const debug = (0, debug_1.default)("engine.io-client:polling"); // debug()
+function empty() { }
+class BaseXHR extends polling_js_1.Polling {
+    /**
+     * XHR Polling constructor.
+     *
+     * @param {Object} opts
+     * @package
+     */
+    constructor(opts) {
+        super(opts);
+        if (typeof location !== "undefined") {
+            const isSSL = "https:" === location.protocol;
+            let port = location.port;
+            // some user agents have empty `location.port`
+            if (!port) {
+                port = isSSL ? "443" : "80";
+            }
+            this.xd =
+                (typeof location !== "undefined" &&
+                    opts.hostname !== location.hostname) ||
+                    port !== opts.port;
+        }
+    }
+    /**
+     * Sends data.
+     *
+     * @param {String} data to send.
+     * @param {Function} called upon flush.
+     * @private
+     */
+    doWrite(data, fn) {
+        const req = this.request({
+            method: "POST",
+            data: data,
+        });
+        req.on("success", fn);
+        req.on("error", (xhrStatus, context) => {
+            this.onError("xhr post error", xhrStatus, context);
+        });
+    }
+    /**
+     * Starts a poll cycle.
+     *
+     * @private
+     */
+    doPoll() {
+        debug("xhr poll");
+        const req = this.request();
+        req.on("data", this.onData.bind(this));
+        req.on("error", (xhrStatus, context) => {
+            this.onError("xhr poll error", xhrStatus, context);
+        });
+        this.pollXhr = req;
+    }
+}
+exports.BaseXHR = BaseXHR;
+class Request extends component_emitter_1.Emitter {
+    /**
+     * Request constructor
+     *
+     * @param {Object} options
+     * @package
+     */
+    constructor(createRequest, uri, opts) {
+        super();
+        this.createRequest = createRequest;
+        (0, util_js_1.installTimerFunctions)(this, opts);
+        this._opts = opts;
+        this._method = opts.method || "GET";
+        this._uri = uri;
+        this._data = undefined !== opts.data ? opts.data : null;
+        this._create();
+    }
+    /**
+     * Creates the XHR object and sends the request.
+     *
+     * @private
+     */
+    _create() {
+        var _a;
+        const opts = (0, util_js_1.pick)(this._opts, "agent", "pfx", "key", "passphrase", "cert", "ca", "ciphers", "rejectUnauthorized", "autoUnref");
+        opts.xdomain = !!this._opts.xd;
+        const xhr = (this._xhr = this.createRequest(opts));
+        try {
+            debug("xhr open %s: %s", this._method, this._uri);
+            xhr.open(this._method, this._uri, true);
+            try {
+                if (this._opts.extraHeaders) {
+                    // @ts-ignore
+                    xhr.setDisableHeaderCheck && xhr.setDisableHeaderCheck(true);
+                    for (let i in this._opts.extraHeaders) {
+                        if (this._opts.extraHeaders.hasOwnProperty(i)) {
+                            xhr.setRequestHeader(i, this._opts.extraHeaders[i]);
+                        }
+                    }
+                }
+            }
+            catch (e) { }
+            if ("POST" === this._method) {
+                try {
+                    xhr.setRequestHeader("Content-type", "text/plain;charset=UTF-8");
+                }
+                catch (e) { }
+            }
+            try {
+                xhr.setRequestHeader("Accept", "*/*");
+            }
+            catch (e) { }
+            (_a = this._opts.cookieJar) === null || _a === void 0 ? void 0 : _a.addCookies(xhr);
+            // ie6 check
+            if ("withCredentials" in xhr) {
+                xhr.withCredentials = this._opts.withCredentials;
+            }
+            if (this._opts.requestTimeout) {
+                xhr.timeout = this._opts.requestTimeout;
+            }
+            xhr.onreadystatechange = () => {
+                var _a;
+                if (xhr.readyState === 3) {
+                    (_a = this._opts.cookieJar) === null || _a === void 0 ? void 0 : _a.parseCookies(
+                    // @ts-ignore
+                    xhr.getResponseHeader("set-cookie"));
+                }
+                if (4 !== xhr.readyState)
+                    return;
+                if (200 === xhr.status || 1223 === xhr.status) {
+                    this._onLoad();
+                }
+                else {
+                    // make sure the `error` event handler that's user-set
+                    // does not throw in the same tick and gets caught here
+                    this.setTimeoutFn(() => {
+                        this._onError(typeof xhr.status === "number" ? xhr.status : 0);
+                    }, 0);
+                }
+            };
+            debug("xhr data %s", this._data);
+            xhr.send(this._data);
+        }
+        catch (e) {
+            // Need to defer since .create() is called directly from the constructor
+            // and thus the 'error' event can only be only bound *after* this exception
+            // occurs.  Therefore, also, we cannot throw here at all.
+            this.setTimeoutFn(() => {
+                this._onError(e);
+            }, 0);
+            return;
+        }
+        if (typeof document !== "undefined") {
+            this._index = Request.requestsCount++;
+            Request.requests[this._index] = this;
+        }
+    }
+    /**
+     * Called upon error.
+     *
+     * @private
+     */
+    _onError(err) {
+        this.emitReserved("error", err, this._xhr);
+        this._cleanup(true);
+    }
+    /**
+     * Cleans up house.
+     *
+     * @private
+     */
+    _cleanup(fromError) {
+        if ("undefined" === typeof this._xhr || null === this._xhr) {
+            return;
+        }
+        this._xhr.onreadystatechange = empty;
+        if (fromError) {
+            try {
+                this._xhr.abort();
+            }
+            catch (e) { }
+        }
+        if (typeof document !== "undefined") {
+            delete Request.requests[this._index];
+        }
+        this._xhr = null;
+    }
+    /**
+     * Called upon load.
+     *
+     * @private
+     */
+    _onLoad() {
+        const data = this._xhr.responseText;
+        if (data !== null) {
+            this.emitReserved("data", data);
+            this.emitReserved("success");
+            this._cleanup();
+        }
+    }
+    /**
+     * Aborts the request.
+     *
+     * @package
+     */
+    abort() {
+        this._cleanup();
+    }
+}
+exports.Request = Request;
+Request.requestsCount = 0;
+Request.requests = {};
+/**
+ * Aborts pending requests when unloading the window. This is needed to prevent
+ * memory leaks (e.g. when using IE) and to ensure that no spurious error is
+ * emitted.
+ */
+if (typeof document !== "undefined") {
+    // @ts-ignore
+    if (typeof attachEvent === "function") {
+        // @ts-ignore
+        attachEvent("onunload", unloadHandler);
+    }
+    else if (typeof addEventListener === "function") {
+        const terminationEvent = "onpagehide" in globals_node_js_1.globalThisShim ? "pagehide" : "unload";
+        addEventListener(terminationEvent, unloadHandler, false);
+    }
+}
+function unloadHandler() {
+    for (let i in Request.requests) {
+        if (Request.requests.hasOwnProperty(i)) {
+            Request.requests[i].abort();
+        }
+    }
+}
+const hasXHR2 = (function () {
+    const xhr = newRequest({
+        xdomain: false,
+    });
+    return xhr && xhr.responseType !== null;
+})();
+/**
+ * HTTP long-polling based on the built-in `XMLHttpRequest` object.
+ *
+ * Usage: browser
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest
+ */
+class XHR extends BaseXHR {
+    constructor(opts) {
+        super(opts);
+        const forceBase64 = opts && opts.forceBase64;
+        this.supportsBinary = hasXHR2 && !forceBase64;
+    }
+    request(opts = {}) {
+        Object.assign(opts, { xd: this.xd }, this.opts);
+        return new Request(newRequest, this.uri(), opts);
+    }
+}
+exports.XHR = XHR;
+function newRequest(opts) {
+    const xdomain = opts.xdomain;
+    // XMLHttpRequest can be disabled on IE
+    try {
+        if ("undefined" !== typeof XMLHttpRequest && (!xdomain || has_cors_js_1.hasCORS)) {
+            return new XMLHttpRequest();
+        }
+    }
+    catch (e) { }
+    if (!xdomain) {
+        try {
+            return new globals_node_js_1.globalThisShim[["Active"].concat("Object").join("X")]("Microsoft.XMLHTTP");
+        }
+        catch (e) { }
+    }
+}

node_modules/engine.io-client/build/cjs/transports/polling-xhr.node.d.ts

@@ -0,0 +1,11 @@
+import { BaseXHR, Request } from "./polling-xhr.js";
+/**
+ * HTTP long-polling based on the `XMLHttpRequest` object provided by the `xmlhttprequest-ssl` package.
+ *
+ * Usage: Node.js, Deno (compat), Bun (compat)
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest
+ */
+export declare class XHR extends BaseXHR {
+    request(opts?: Record<string, any>): Request;
+}

node_modules/engine.io-client/build/cjs/transports/polling-xhr.node.js

@@ -0,0 +1,44 @@
+"use strict";
+var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    var desc = Object.getOwnPropertyDescriptor(m, k);
+    if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
+      desc = { enumerable: true, get: function() { return m[k]; } };
+    }
+    Object.defineProperty(o, k2, desc);
+}) : (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    o[k2] = m[k];
+}));
+var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
+    Object.defineProperty(o, "default", { enumerable: true, value: v });
+}) : function(o, v) {
+    o["default"] = v;
+});
+var __importStar = (this && this.__importStar) || function (mod) {
+    if (mod && mod.__esModule) return mod;
+    var result = {};
+    if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
+    __setModuleDefault(result, mod);
+    return result;
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.XHR = void 0;
+const XMLHttpRequestModule = __importStar(require("xmlhttprequest-ssl"));
+const polling_xhr_js_1 = require("./polling-xhr.js");
+const XMLHttpRequest = XMLHttpRequestModule.default || XMLHttpRequestModule;
+/**
+ * HTTP long-polling based on the `XMLHttpRequest` object provided by the `xmlhttprequest-ssl` package.
+ *
+ * Usage: Node.js, Deno (compat), Bun (compat)
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest
+ */
+class XHR extends polling_xhr_js_1.BaseXHR {
+    request(opts = {}) {
+        var _a;
+        Object.assign(opts, { xd: this.xd, cookieJar: (_a = this.socket) === null || _a === void 0 ? void 0 : _a._cookieJar }, this.opts);
+        return new polling_xhr_js_1.Request((opts) => new XMLHttpRequest(opts), this.uri(), opts);
+    }
+}
+exports.XHR = XHR;

node_modules/engine.io-client/build/cjs/transports/polling.d.ts

@@ -0,0 +1,52 @@
+import { Transport } from "../transport.js";
+export declare abstract class Polling extends Transport {
+    private _polling;
+    get name(): string;
+    /**
+     * Opens the socket (triggers polling). We write a PING message to determine
+     * when the transport is open.
+     *
+     * @protected
+     */
+    doOpen(): void;
+    /**
+     * Pauses polling.
+     *
+     * @param {Function} onPause - callback upon buffers are flushed and transport is paused
+     * @package
+     */
+    pause(onPause: any): void;
+    /**
+     * Starts polling cycle.
+     *
+     * @private
+     */
+    private _poll;
+    /**
+     * Overloads onData to detect payloads.
+     *
+     * @protected
+     */
+    onData(data: any): void;
+    /**
+     * For polling, send a close packet.
+     *
+     * @protected
+     */
+    doClose(): void;
+    /**
+     * Writes a packets payload.
+     *
+     * @param {Array} packets - data packets
+     * @protected
+     */
+    write(packets: any): void;
+    /**
+     * Generates uri for connection.
+     *
+     * @private
+     */
+    protected uri(): string;
+    abstract doPoll(): any;
+    abstract doWrite(data: string, callback: () => void): any;
+}

node_modules/engine.io-client/build/cjs/transports/polling.js

@@ -0,0 +1,165 @@
+"use strict";
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Polling = void 0;
+const transport_js_1 = require("../transport.js");
+const util_js_1 = require("../util.js");
+const engine_io_parser_1 = require("engine.io-parser");
+const debug_1 = __importDefault(require("debug")); // debug()
+const debug = (0, debug_1.default)("engine.io-client:polling"); // debug()
+class Polling extends transport_js_1.Transport {
+    constructor() {
+        super(...arguments);
+        this._polling = false;
+    }
+    get name() {
+        return "polling";
+    }
+    /**
+     * Opens the socket (triggers polling). We write a PING message to determine
+     * when the transport is open.
+     *
+     * @protected
+     */
+    doOpen() {
+        this._poll();
+    }
+    /**
+     * Pauses polling.
+     *
+     * @param {Function} onPause - callback upon buffers are flushed and transport is paused
+     * @package
+     */
+    pause(onPause) {
+        this.readyState = "pausing";
+        const pause = () => {
+            debug("paused");
+            this.readyState = "paused";
+            onPause();
+        };
+        if (this._polling || !this.writable) {
+            let total = 0;
+            if (this._polling) {
+                debug("we are currently polling - waiting to pause");
+                total++;
+                this.once("pollComplete", function () {
+                    debug("pre-pause polling complete");
+                    --total || pause();
+                });
+            }
+            if (!this.writable) {
+                debug("we are currently writing - waiting to pause");
+                total++;
+                this.once("drain", function () {
+                    debug("pre-pause writing complete");
+                    --total || pause();
+                });
+            }
+        }
+        else {
+            pause();
+        }
+    }
+    /**
+     * Starts polling cycle.
+     *
+     * @private
+     */
+    _poll() {
+        debug("polling");
+        this._polling = true;
+        this.doPoll();
+        this.emitReserved("poll");
+    }
+    /**
+     * Overloads onData to detect payloads.
+     *
+     * @protected
+     */
+    onData(data) {
+        debug("polling got data %s", data);
+        const callback = (packet) => {
+            // if its the first message we consider the transport open
+            if ("opening" === this.readyState && packet.type === "open") {
+                this.onOpen();
+            }
+            // if its a close packet, we close the ongoing requests
+            if ("close" === packet.type) {
+                this.onClose({ description: "transport closed by the server" });
+                return false;
+            }
+            // otherwise bypass onData and handle the message
+            this.onPacket(packet);
+        };
+        // decode payload
+        (0, engine_io_parser_1.decodePayload)(data, this.socket.binaryType).forEach(callback);
+        // if an event did not trigger closing
+        if ("closed" !== this.readyState) {
+            // if we got data we're not polling
+            this._polling = false;
+            this.emitReserved("pollComplete");
+            if ("open" === this.readyState) {
+                this._poll();
+            }
+            else {
+                debug('ignoring poll - transport state "%s"', this.readyState);
+            }
+        }
+    }
+    /**
+     * For polling, send a close packet.
+     *
+     * @protected
+     */
+    doClose() {
+        const close = () => {
+            debug("writing close packet");
+            this.write([{ type: "close" }]);
+        };
+        if ("open" === this.readyState) {
+            debug("transport open - closing");
+            close();
+        }
+        else {
+            // in case we're trying to close while
+            // handshaking is in progress (GH-164)
+            debug("transport not open - deferring close");
+            this.once("open", close);
+        }
+    }
+    /**
+     * Writes a packets payload.
+     *
+     * @param {Array} packets - data packets
+     * @protected
+     */
+    write(packets) {
+        this.writable = false;
+        (0, engine_io_parser_1.encodePayload)(packets, (data) => {
+            this.doWrite(data, () => {
+                this.writable = true;
+                this.emitReserved("drain");
+            });
+        });
+    }
+    /**
+     * Generates uri for connection.
+     *
+     * @private
+     */
+    uri() {
+        const schema = this.opts.secure ? "https" : "http";
+        const query = this.query || {};
+        // cache busting is forced
+        if (false !== this.opts.timestampRequests) {
+            query[this.opts.timestampParam] = (0, util_js_1.randomString)();
+        }
+        if (!this.supportsBinary && !query.sid) {
+            query.b64 = 1;
+        }
+        return this.createUri(schema, query);
+    }
+}
+exports.Polling = Polling;

node_modules/engine.io-client/build/cjs/transports/websocket.d.ts

@@ -0,0 +1,36 @@
+import { Transport } from "../transport.js";
+import type { Packet, RawData } from "engine.io-parser";
+export declare abstract class BaseWS extends Transport {
+    protected ws: any;
+    get name(): string;
+    doOpen(): this;
+    abstract createSocket(uri: string, protocols: string | string[] | undefined, opts: Record<string, any>): any;
+    /**
+     * Adds event listeners to the socket
+     *
+     * @private
+     */
+    private addEventListeners;
+    write(packets: any): void;
+    abstract doWrite(packet: Packet, data: RawData): any;
+    doClose(): void;
+    /**
+     * Generates uri for connection.
+     *
+     * @private
+     */
+    private uri;
+}
+/**
+ * WebSocket transport based on the built-in `WebSocket` object.
+ *
+ * Usage: browser, Node.js (since v21), Deno, Bun
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/WebSocket
+ * @see https://caniuse.com/mdn-api_websocket
+ * @see https://nodejs.org/api/globals.html#websocket
+ */
+export declare class WS extends BaseWS {
+    createSocket(uri: string, protocols: string | string[] | undefined, opts: Record<string, any>): any;
+    doWrite(_packet: Packet, data: RawData): void;
+}

node_modules/engine.io-client/build/cjs/transports/websocket.js

@@ -0,0 +1,136 @@
+"use strict";
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.WS = exports.BaseWS = void 0;
+const transport_js_1 = require("../transport.js");
+const util_js_1 = require("../util.js");
+const engine_io_parser_1 = require("engine.io-parser");
+const globals_node_js_1 = require("../globals.node.js");
+const debug_1 = __importDefault(require("debug")); // debug()
+const debug = (0, debug_1.default)("engine.io-client:websocket"); // debug()
+// detect ReactNative environment
+const isReactNative = typeof navigator !== "undefined" &&
+    typeof navigator.product === "string" &&
+    navigator.product.toLowerCase() === "reactnative";
+class BaseWS extends transport_js_1.Transport {
+    get name() {
+        return "websocket";
+    }
+    doOpen() {
+        const uri = this.uri();
+        const protocols = this.opts.protocols;
+        // React Native only supports the 'headers' option, and will print a warning if anything else is passed
+        const opts = isReactNative
+            ? {}
+            : (0, util_js_1.pick)(this.opts, "agent", "perMessageDeflate", "pfx", "key", "passphrase", "cert", "ca", "ciphers", "rejectUnauthorized", "localAddress", "protocolVersion", "origin", "maxPayload", "family", "checkServerIdentity");
+        if (this.opts.extraHeaders) {
+            opts.headers = this.opts.extraHeaders;
+        }
+        try {
+            this.ws = this.createSocket(uri, protocols, opts);
+        }
+        catch (err) {
+            return this.emitReserved("error", err);
+        }
+        this.ws.binaryType = this.socket.binaryType;
+        this.addEventListeners();
+    }
+    /**
+     * Adds event listeners to the socket
+     *
+     * @private
+     */
+    addEventListeners() {
+        this.ws.onopen = () => {
+            if (this.opts.autoUnref) {
+                this.ws._socket.unref();
+            }
+            this.onOpen();
+        };
+        this.ws.onclose = (closeEvent) => this.onClose({
+            description: "websocket connection closed",
+            context: closeEvent,
+        });
+        this.ws.onmessage = (ev) => this.onData(ev.data);
+        this.ws.onerror = (e) => this.onError("websocket error", e);
+    }
+    write(packets) {
+        this.writable = false;
+        // encodePacket efficient as it uses WS framing
+        // no need for encodePayload
+        for (let i = 0; i < packets.length; i++) {
+            const packet = packets[i];
+            const lastPacket = i === packets.length - 1;
+            (0, engine_io_parser_1.encodePacket)(packet, this.supportsBinary, (data) => {
+                // Sometimes the websocket has already been closed but the browser didn't
+                // have a chance of informing us about it yet, in that case send will
+                // throw an error
+                try {
+                    this.doWrite(packet, data);
+                }
+                catch (e) {
+                    debug("websocket closed before onclose event");
+                }
+                if (lastPacket) {
+                    // fake drain
+                    // defer to next tick to allow Socket to clear writeBuffer
+                    (0, globals_node_js_1.nextTick)(() => {
+                        this.writable = true;
+                        this.emitReserved("drain");
+                    }, this.setTimeoutFn);
+                }
+            });
+        }
+    }
+    doClose() {
+        if (typeof this.ws !== "undefined") {
+            this.ws.onerror = () => { };
+            this.ws.close();
+            this.ws = null;
+        }
+    }
+    /**
+     * Generates uri for connection.
+     *
+     * @private
+     */
+    uri() {
+        const schema = this.opts.secure ? "wss" : "ws";
+        const query = this.query || {};
+        // append timestamp to URI
+        if (this.opts.timestampRequests) {
+            query[this.opts.timestampParam] = (0, util_js_1.randomString)();
+        }
+        // communicate binary support capabilities
+        if (!this.supportsBinary) {
+            query.b64 = 1;
+        }
+        return this.createUri(schema, query);
+    }
+}
+exports.BaseWS = BaseWS;
+const WebSocketCtor = globals_node_js_1.globalThisShim.WebSocket || globals_node_js_1.globalThisShim.MozWebSocket;
+/**
+ * WebSocket transport based on the built-in `WebSocket` object.
+ *
+ * Usage: browser, Node.js (since v21), Deno, Bun
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/WebSocket
+ * @see https://caniuse.com/mdn-api_websocket
+ * @see https://nodejs.org/api/globals.html#websocket
+ */
+class WS extends BaseWS {
+    createSocket(uri, protocols, opts) {
+        return !isReactNative
+            ? protocols
+                ? new WebSocketCtor(uri, protocols)
+                : new WebSocketCtor(uri)
+            : new WebSocketCtor(uri, protocols, opts);
+    }
+    doWrite(_packet, data) {
+        this.ws.send(data);
+    }
+}
+exports.WS = WS;

node_modules/engine.io-client/build/cjs/transports/websocket.node.d.ts

@@ -0,0 +1,14 @@
+import type { Packet, RawData } from "engine.io-parser";
+import { BaseWS } from "./websocket.js";
+/**
+ * WebSocket transport based on the `WebSocket` object provided by the `ws` package.
+ *
+ * Usage: Node.js, Deno (compat), Bun (compat)
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/WebSocket
+ * @see https://caniuse.com/mdn-api_websocket
+ */
+export declare class WS extends BaseWS {
+    createSocket(uri: string, protocols: string | string[] | undefined, opts: Record<string, any>): any;
+    doWrite(packet: Packet, data: RawData): void;
+}

node_modules/engine.io-client/build/cjs/transports/websocket.node.js

@@ -0,0 +1,45 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.WS = void 0;
+const ws_1 = require("ws");
+const websocket_js_1 = require("./websocket.js");
+/**
+ * WebSocket transport based on the `WebSocket` object provided by the `ws` package.
+ *
+ * Usage: Node.js, Deno (compat), Bun (compat)
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/WebSocket
+ * @see https://caniuse.com/mdn-api_websocket
+ */
+class WS extends websocket_js_1.BaseWS {
+    createSocket(uri, protocols, opts) {
+        var _a;
+        if ((_a = this.socket) === null || _a === void 0 ? void 0 : _a._cookieJar) {
+            opts.headers = opts.headers || {};
+            opts.headers.cookie =
+                typeof opts.headers.cookie === "string"
+                    ? [opts.headers.cookie]
+                    : opts.headers.cookie || [];
+            for (const [name, cookie] of this.socket._cookieJar.cookies) {
+                opts.headers.cookie.push(`${name}=${cookie.value}`);
+            }
+        }
+        return new ws_1.WebSocket(uri, protocols, opts);
+    }
+    doWrite(packet, data) {
+        const opts = {};
+        if (packet.options) {
+            opts.compress = packet.options.compress;
+        }
+        if (this.opts.perMessageDeflate) {
+            const len = 
+            // @ts-ignore
+            "string" === typeof data ? Buffer.byteLength(data) : data.length;
+            if (len < this.opts.perMessageDeflate.threshold) {
+                opts.compress = false;
+            }
+        }
+        this.ws.send(data, opts);
+    }
+}
+exports.WS = WS;

node_modules/engine.io-client/build/cjs/transports/webtransport.d.ts

@@ -0,0 +1,18 @@
+import { Transport } from "../transport.js";
+import { Packet } from "engine.io-parser";
+/**
+ * WebTransport transport based on the built-in `WebTransport` object.
+ *
+ * Usage: browser, Node.js (with the `@fails-components/webtransport` package)
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/WebTransport
+ * @see https://caniuse.com/webtransport
+ */
+export declare class WT extends Transport {
+    private _transport;
+    private _writer;
+    get name(): string;
+    protected doOpen(): this;
+    protected write(packets: Packet[]): void;
+    protected doClose(): void;
+}

node_modules/engine.io-client/build/cjs/transports/webtransport.js

@@ -0,0 +1,94 @@
+"use strict";
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.WT = void 0;
+const transport_js_1 = require("../transport.js");
+const globals_node_js_1 = require("../globals.node.js");
+const engine_io_parser_1 = require("engine.io-parser");
+const debug_1 = __importDefault(require("debug")); // debug()
+const debug = (0, debug_1.default)("engine.io-client:webtransport"); // debug()
+/**
+ * WebTransport transport based on the built-in `WebTransport` object.
+ *
+ * Usage: browser, Node.js (with the `@fails-components/webtransport` package)
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/WebTransport
+ * @see https://caniuse.com/webtransport
+ */
+class WT extends transport_js_1.Transport {
+    get name() {
+        return "webtransport";
+    }
+    doOpen() {
+        try {
+            // @ts-ignore
+            this._transport = new WebTransport(this.createUri("https"), this.opts.transportOptions[this.name]);
+        }
+        catch (err) {
+            return this.emitReserved("error", err);
+        }
+        this._transport.closed
+            .then(() => {
+            debug("transport closed gracefully");
+            this.onClose();
+        })
+            .catch((err) => {
+            debug("transport closed due to %s", err);
+            this.onError("webtransport error", err);
+        });
+        // note: we could have used async/await, but that would require some additional polyfills
+        this._transport.ready.then(() => {
+            this._transport.createBidirectionalStream().then((stream) => {
+                const decoderStream = (0, engine_io_parser_1.createPacketDecoderStream)(Number.MAX_SAFE_INTEGER, this.socket.binaryType);
+                const reader = stream.readable.pipeThrough(decoderStream).getReader();
+                const encoderStream = (0, engine_io_parser_1.createPacketEncoderStream)();
+                encoderStream.readable.pipeTo(stream.writable);
+                this._writer = encoderStream.writable.getWriter();
+                const read = () => {
+                    reader
+                        .read()
+                        .then(({ done, value }) => {
+                        if (done) {
+                            debug("session is closed");
+                            return;
+                        }
+                        debug("received chunk: %o", value);
+                        this.onPacket(value);
+                        read();
+                    })
+                        .catch((err) => {
+                        debug("an error occurred while reading: %s", err);
+                    });
+                };
+                read();
+                const packet = { type: "open" };
+                if (this.query.sid) {
+                    packet.data = `{"sid":"${this.query.sid}"}`;
+                }
+                this._writer.write(packet).then(() => this.onOpen());
+            });
+        });
+    }
+    write(packets) {
+        this.writable = false;
+        for (let i = 0; i < packets.length; i++) {
+            const packet = packets[i];
+            const lastPacket = i === packets.length - 1;
+            this._writer.write(packet).then(() => {
+                if (lastPacket) {
+                    (0, globals_node_js_1.nextTick)(() => {
+                        this.writable = true;
+                        this.emitReserved("drain");
+                    }, this.setTimeoutFn);
+                }
+            });
+        }
+    }
+    doClose() {
+        var _a;
+        (_a = this._transport) === null || _a === void 0 ? void 0 : _a.close();
+    }
+}
+exports.WT = WT;

node_modules/engine.io-client/build/cjs/util.d.ts

@@ -0,0 +1,7 @@
+export declare function pick(obj: any, ...attr: any[]): any;
+export declare function installTimerFunctions(obj: any, opts: any): void;
+export declare function byteLength(obj: any): number;
+/**
+ * Generates a random 8-characters string.
+ */
+export declare function randomString(): string;

node_modules/engine.io-client/build/cjs/util.js

@@ -0,0 +1,65 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.pick = pick;
+exports.installTimerFunctions = installTimerFunctions;
+exports.byteLength = byteLength;
+exports.randomString = randomString;
+const globals_node_js_1 = require("./globals.node.js");
+function pick(obj, ...attr) {
+    return attr.reduce((acc, k) => {
+        if (obj.hasOwnProperty(k)) {
+            acc[k] = obj[k];
+        }
+        return acc;
+    }, {});
+}
+// Keep a reference to the real timeout functions so they can be used when overridden
+const NATIVE_SET_TIMEOUT = globals_node_js_1.globalThisShim.setTimeout;
+const NATIVE_CLEAR_TIMEOUT = globals_node_js_1.globalThisShim.clearTimeout;
+function installTimerFunctions(obj, opts) {
+    if (opts.useNativeTimers) {
+        obj.setTimeoutFn = NATIVE_SET_TIMEOUT.bind(globals_node_js_1.globalThisShim);
+        obj.clearTimeoutFn = NATIVE_CLEAR_TIMEOUT.bind(globals_node_js_1.globalThisShim);
+    }
+    else {
+        obj.setTimeoutFn = globals_node_js_1.globalThisShim.setTimeout.bind(globals_node_js_1.globalThisShim);
+        obj.clearTimeoutFn = globals_node_js_1.globalThisShim.clearTimeout.bind(globals_node_js_1.globalThisShim);
+    }
+}
+// base64 encoded buffers are about 33% bigger (https://en.wikipedia.org/wiki/Base64)
+const BASE64_OVERHEAD = 1.33;
+// we could also have used `new Blob([obj]).size`, but it isn't supported in IE9
+function byteLength(obj) {
+    if (typeof obj === "string") {
+        return utf8Length(obj);
+    }
+    // arraybuffer or blob
+    return Math.ceil((obj.byteLength || obj.size) * BASE64_OVERHEAD);
+}
+function utf8Length(str) {
+    let c = 0, length = 0;
+    for (let i = 0, l = str.length; i < l; i++) {
+        c = str.charCodeAt(i);
+        if (c < 0x80) {
+            length += 1;
+        }
+        else if (c < 0x800) {
+            length += 2;
+        }
+        else if (c < 0xd800 || c >= 0xe000) {
+            length += 3;
+        }
+        else {
+            i++;
+            length += 4;
+        }
+    }
+    return length;
+}
+/**
+ * Generates a random 8-characters string.
+ */
+function randomString() {
+    return (Date.now().toString(36).substring(3) +
+        Math.random().toString(36).substring(2, 5));
+}

node_modules/engine.io-client/build/esm-debug/browser-entrypoint.d.ts

@@ -0,0 +1,3 @@
+import { Socket } from "./socket.js";
+declare const _default: (uri: any, opts: any) => Socket;
+export default _default;

node_modules/engine.io-client/build/esm-debug/browser-entrypoint.js

@@ -0,0 +1,2 @@
+import { Socket } from "./socket.js";
+export default (uri, opts) => new Socket(uri, opts);

node_modules/engine.io-client/build/esm-debug/contrib/has-cors.d.ts

@@ -0,0 +1 @@
+export declare const hasCORS: boolean;

node_modules/engine.io-client/build/esm-debug/contrib/has-cors.js

@@ -0,0 +1,11 @@
+// imported from https://github.com/component/has-cors
+let value = false;
+try {
+    value = typeof XMLHttpRequest !== 'undefined' &&
+        'withCredentials' in new XMLHttpRequest();
+}
+catch (err) {
+    // if XMLHttp support is disabled in IE then it will throw
+    // when trying to create
+}
+export const hasCORS = value;

node_modules/engine.io-client/build/esm-debug/contrib/parseqs.d.ts

@@ -0,0 +1,15 @@
+/**
+ * Compiles a querystring
+ * Returns string representation of the object
+ *
+ * @param {Object}
+ * @api private
+ */
+export declare function encode(obj: any): string;
+/**
+ * Parses a simple querystring into an object
+ *
+ * @param {String} qs
+ * @api private
+ */
+export declare function decode(qs: any): {};

node_modules/engine.io-client/build/esm-debug/contrib/parseqs.js

@@ -0,0 +1,34 @@
+// imported from https://github.com/galkn/querystring
+/**
+ * Compiles a querystring
+ * Returns string representation of the object
+ *
+ * @param {Object}
+ * @api private
+ */
+export function encode(obj) {
+    let str = '';
+    for (let i in obj) {
+        if (obj.hasOwnProperty(i)) {
+            if (str.length)
+                str += '&';
+            str += encodeURIComponent(i) + '=' + encodeURIComponent(obj[i]);
+        }
+    }
+    return str;
+}
+/**
+ * Parses a simple querystring into an object
+ *
+ * @param {String} qs
+ * @api private
+ */
+export function decode(qs) {
+    let qry = {};
+    let pairs = qs.split('&');
+    for (let i = 0, l = pairs.length; i < l; i++) {
+        let pair = pairs[i].split('=');
+        qry[decodeURIComponent(pair[0])] = decodeURIComponent(pair[1]);
+    }
+    return qry;
+}

node_modules/engine.io-client/build/esm-debug/contrib/parseuri.d.ts

@@ -0,0 +1 @@
+export declare function parse(str: string): any;

node_modules/engine.io-client/build/esm-debug/contrib/parseuri.js

@@ -0,0 +1,64 @@
+// imported from https://github.com/galkn/parseuri
+/**
+ * Parses a URI
+ *
+ * Note: we could also have used the built-in URL object, but it isn't supported on all platforms.
+ *
+ * See:
+ * - https://developer.mozilla.org/en-US/docs/Web/API/URL
+ * - https://caniuse.com/url
+ * - https://www.rfc-editor.org/rfc/rfc3986#appendix-B
+ *
+ * History of the parse() method:
+ * - first commit: https://github.com/socketio/socket.io-client/commit/4ee1d5d94b3906a9c052b459f1a818b15f38f91c
+ * - export into its own module: https://github.com/socketio/engine.io-client/commit/de2c561e4564efeb78f1bdb1ba39ef81b2822cb3
+ * - reimport: https://github.com/socketio/engine.io-client/commit/df32277c3f6d622eec5ed09f493cae3f3391d242
+ *
+ * @author Steven Levithan <stevenlevithan.com> (MIT license)
+ * @api private
+ */
+const re = /^(?:(?![^:@\/?#]+:[^:@\/]*@)(http|https|ws|wss):\/\/)?((?:(([^:@\/?#]*)(?::([^:@\/?#]*))?)?@)?((?:[a-f0-9]{0,4}:){2,7}[a-f0-9]{0,4}|[^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/;
+const parts = [
+    'source', 'protocol', 'authority', 'userInfo', 'user', 'password', 'host', 'port', 'relative', 'path', 'directory', 'file', 'query', 'anchor'
+];
+export function parse(str) {
+    if (str.length > 8000) {
+        throw "URI too long";
+    }
+    const src = str, b = str.indexOf('['), e = str.indexOf(']');
+    if (b != -1 && e != -1) {
+        str = str.substring(0, b) + str.substring(b, e).replace(/:/g, ';') + str.substring(e, str.length);
+    }
+    let m = re.exec(str || ''), uri = {}, i = 14;
+    while (i--) {
+        uri[parts[i]] = m[i] || '';
+    }
+    if (b != -1 && e != -1) {
+        uri.source = src;
+        uri.host = uri.host.substring(1, uri.host.length - 1).replace(/;/g, ':');
+        uri.authority = uri.authority.replace('[', '').replace(']', '').replace(/;/g, ':');
+        uri.ipv6uri = true;
+    }
+    uri.pathNames = pathNames(uri, uri['path']);
+    uri.queryKey = queryKey(uri, uri['query']);
+    return uri;
+}
+function pathNames(obj, path) {
+    const regx = /\/{2,9}/g, names = path.replace(regx, "/").split("/");
+    if (path.slice(0, 1) == '/' || path.length === 0) {
+        names.splice(0, 1);
+    }
+    if (path.slice(-1) == '/') {
+        names.splice(names.length - 1, 1);
+    }
+    return names;
+}
+function queryKey(uri, query) {
+    const data = {};
+    query.replace(/(?:^|&)([^&=]*)=?([^&]*)/g, function ($0, $1, $2) {
+        if ($1) {
+            data[$1] = $2;
+        }
+    });
+    return data;
+}

node_modules/engine.io-client/build/esm-debug/globals.d.ts

@@ -0,0 +1,4 @@
+export declare const nextTick: (cb: any, setTimeoutFn: any) => any;
+export declare const globalThisShim: any;
+export declare const defaultBinaryType = "arraybuffer";
+export declare function createCookieJar(): void;

node_modules/engine.io-client/build/esm-debug/globals.js

@@ -0,0 +1,22 @@
+export const nextTick = (() => {
+    const isPromiseAvailable = typeof Promise === "function" && typeof Promise.resolve === "function";
+    if (isPromiseAvailable) {
+        return (cb) => Promise.resolve().then(cb);
+    }
+    else {
+        return (cb, setTimeoutFn) => setTimeoutFn(cb, 0);
+    }
+})();
+export const globalThisShim = (() => {
+    if (typeof self !== "undefined") {
+        return self;
+    }
+    else if (typeof window !== "undefined") {
+        return window;
+    }
+    else {
+        return Function("return this")();
+    }
+})();
+export const defaultBinaryType = "arraybuffer";
+export function createCookieJar() { }

node_modules/engine.io-client/build/esm-debug/globals.node.d.ts

@@ -0,0 +1,21 @@
+export declare const nextTick: (callback: Function, ...args: any[]) => void;
+export declare const globalThisShim: typeof globalThis;
+export declare const defaultBinaryType = "nodebuffer";
+export declare function createCookieJar(): CookieJar;
+interface Cookie {
+    name: string;
+    value: string;
+    expires?: Date;
+}
+/**
+ * @see https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Set-Cookie
+ */
+export declare function parse(setCookieString: string): Cookie;
+export declare class CookieJar {
+    private _cookies;
+    parseCookies(values: string[]): void;
+    get cookies(): IterableIterator<[string, Cookie]>;
+    addCookies(xhr: any): void;
+    appendCookies(headers: Headers): void;
+}
+export {};

node_modules/engine.io-client/build/esm-debug/globals.node.js

@@ -0,0 +1,91 @@
+export const nextTick = process.nextTick;
+export const globalThisShim = global;
+export const defaultBinaryType = "nodebuffer";
+export function createCookieJar() {
+    return new CookieJar();
+}
+/**
+ * @see https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Set-Cookie
+ */
+export function parse(setCookieString) {
+    const parts = setCookieString.split("; ");
+    const i = parts[0].indexOf("=");
+    if (i === -1) {
+        return;
+    }
+    const name = parts[0].substring(0, i).trim();
+    if (!name.length) {
+        return;
+    }
+    let value = parts[0].substring(i + 1).trim();
+    if (value.charCodeAt(0) === 0x22) {
+        // remove double quotes
+        value = value.slice(1, -1);
+    }
+    const cookie = {
+        name,
+        value,
+    };
+    for (let j = 1; j < parts.length; j++) {
+        const subParts = parts[j].split("=");
+        if (subParts.length !== 2) {
+            continue;
+        }
+        const key = subParts[0].trim();
+        const value = subParts[1].trim();
+        switch (key) {
+            case "Expires":
+                cookie.expires = new Date(value);
+                break;
+            case "Max-Age":
+                const expiration = new Date();
+                expiration.setUTCSeconds(expiration.getUTCSeconds() + parseInt(value, 10));
+                cookie.expires = expiration;
+                break;
+            default:
+            // ignore other keys
+        }
+    }
+    return cookie;
+}
+export class CookieJar {
+    constructor() {
+        this._cookies = new Map();
+    }
+    parseCookies(values) {
+        if (!values) {
+            return;
+        }
+        values.forEach((value) => {
+            const parsed = parse(value);
+            if (parsed) {
+                this._cookies.set(parsed.name, parsed);
+            }
+        });
+    }
+    get cookies() {
+        const now = Date.now();
+        this._cookies.forEach((cookie, name) => {
+            var _a;
+            if (((_a = cookie.expires) === null || _a === void 0 ? void 0 : _a.getTime()) < now) {
+                this._cookies.delete(name);
+            }
+        });
+        return this._cookies.entries();
+    }
+    addCookies(xhr) {
+        const cookies = [];
+        for (const [name, cookie] of this.cookies) {
+            cookies.push(`${name}=${cookie.value}`);
+        }
+        if (cookies.length) {
+            xhr.setDisableHeaderCheck(true);
+            xhr.setRequestHeader("cookie", cookies.join("; "));
+        }
+    }
+    appendCookies(headers) {
+        for (const [name, cookie] of this.cookies) {
+            headers.append("cookie", `${name}=${cookie.value}`);
+        }
+    }
+}

node_modules/engine.io-client/build/esm-debug/index.d.ts

@@ -0,0 +1,15 @@
+import { Socket } from "./socket.js";
+export { Socket };
+export { SocketOptions, SocketWithoutUpgrade, SocketWithUpgrade, } from "./socket.js";
+export declare const protocol: number;
+export { Transport, TransportError } from "./transport.js";
+export { transports } from "./transports/index.js";
+export { installTimerFunctions } from "./util.js";
+export { parse } from "./contrib/parseuri.js";
+export { nextTick } from "./globals.node.js";
+export { Fetch } from "./transports/polling-fetch.js";
+export { XHR as NodeXHR } from "./transports/polling-xhr.node.js";
+export { XHR } from "./transports/polling-xhr.js";
+export { WS as NodeWebSocket } from "./transports/websocket.node.js";
+export { WS as WebSocket } from "./transports/websocket.js";
+export { WT as WebTransport } from "./transports/webtransport.js";

node_modules/engine.io-client/build/esm-debug/index.js

@@ -0,0 +1,15 @@
+import { Socket } from "./socket.js";
+export { Socket };
+export { SocketWithoutUpgrade, SocketWithUpgrade, } from "./socket.js";
+export const protocol = Socket.protocol;
+export { Transport, TransportError } from "./transport.js";
+export { transports } from "./transports/index.js";
+export { installTimerFunctions } from "./util.js";
+export { parse } from "./contrib/parseuri.js";
+export { nextTick } from "./globals.node.js";
+export { Fetch } from "./transports/polling-fetch.js";
+export { XHR as NodeXHR } from "./transports/polling-xhr.node.js";
+export { XHR } from "./transports/polling-xhr.js";
+export { WS as NodeWebSocket } from "./transports/websocket.node.js";
+export { WS as WebSocket } from "./transports/websocket.js";
+export { WT as WebTransport } from "./transports/webtransport.js";

node_modules/engine.io-client/build/esm-debug/package.json

@@ -0,0 +1,10 @@
+{
+  "name": "engine.io-client",
+  "type": "module",
+  "browser": {
+    "ws": false,
+    "./transports/polling-xhr.node.js": "./transports/polling-xhr.js",
+    "./transports/websocket.node.js": "./transports/websocket.js",
+    "./globals.node.js": "./globals.js"
+  }
+}

node_modules/engine.io-client/build/esm-debug/socket.d.ts

@@ -0,0 +1,482 @@
+import { Emitter } from "@socket.io/component-emitter";
+import type { Packet, BinaryType, RawData } from "engine.io-parser";
+import { CloseDetails, Transport } from "./transport.js";
+import { CookieJar } from "./globals.node.js";
+export interface SocketOptions {
+    /**
+     * The host that we're connecting to. Set from the URI passed when connecting
+     */
+    host?: string;
+    /**
+     * The hostname for our connection. Set from the URI passed when connecting
+     */
+    hostname?: string;
+    /**
+     * If this is a secure connection. Set from the URI passed when connecting
+     */
+    secure?: boolean;
+    /**
+     * The port for our connection. Set from the URI passed when connecting
+     */
+    port?: string | number;
+    /**
+     * Any query parameters in our uri. Set from the URI passed when connecting
+     */
+    query?: {
+        [key: string]: any;
+    };
+    /**
+     * `http.Agent` to use, defaults to `false` (NodeJS only)
+     *
+     * Note: the type should be "undefined | http.Agent | https.Agent | false", but this would break browser-only clients.
+     *
+     * @see https://nodejs.org/api/http.html#httprequestoptions-callback
+     */
+    agent?: string | boolean;
+    /**
+     * Whether the client should try to upgrade the transport from
+     * long-polling to something better.
+     * @default true
+     */
+    upgrade?: boolean;
+    /**
+     * Forces base 64 encoding for polling transport even when XHR2
+     * responseType is available and WebSocket even if the used standard
+     * supports binary.
+     */
+    forceBase64?: boolean;
+    /**
+     * The param name to use as our timestamp key
+     * @default 't'
+     */
+    timestampParam?: string;
+    /**
+     * Whether to add the timestamp with each transport request. Note: this
+     * is ignored if the browser is IE or Android, in which case requests
+     * are always stamped
+     * @default false
+     */
+    timestampRequests?: boolean;
+    /**
+     * A list of transports to try (in order). Engine.io always attempts to
+     * connect directly with the first one, provided the feature detection test
+     * for it passes.
+     *
+     * @default ['polling','websocket', 'webtransport']
+     */
+    transports?: ("polling" | "websocket" | "webtransport" | string)[] | TransportCtor[];
+    /**
+     * Whether all the transports should be tested, instead of just the first one.
+     *
+     * If set to `true`, the client will first try to connect with HTTP long-polling, and then with WebSocket in case of
+     * failure, and finally with WebTransport if the previous attempts have failed.
+     *
+     * If set to `false` (default), if the connection with HTTP long-polling fails, then the client will not test the
+     * other transports and will abort the connection.
+     *
+     * @default false
+     */
+    tryAllTransports?: boolean;
+    /**
+     * If true and if the previous websocket connection to the server succeeded,
+     * the connection attempt will bypass the normal upgrade process and will
+     * initially try websocket. A connection attempt following a transport error
+     * will use the normal upgrade process. It is recommended you turn this on
+     * only when using SSL/TLS connections, or if you know that your network does
+     * not block websockets.
+     * @default false
+     */
+    rememberUpgrade?: boolean;
+    /**
+     * Timeout for xhr-polling requests in milliseconds (0) (only for polling transport)
+     */
+    requestTimeout?: number;
+    /**
+     * Transport options for Node.js client (headers etc)
+     */
+    transportOptions?: Object;
+    /**
+     * (SSL) Certificate, Private key and CA certificates to use for SSL.
+     * Can be used in Node.js client environment to manually specify
+     * certificate information.
+     */
+    pfx?: string;
+    /**
+     * (SSL) Private key to use for SSL. Can be used in Node.js client
+     * environment to manually specify certificate information.
+     */
+    key?: string;
+    /**
+     * (SSL) A string or passphrase for the private key or pfx. Can be
+     * used in Node.js client environment to manually specify certificate
+     * information.
+     */
+    passphrase?: string;
+    /**
+     * (SSL) Public x509 certificate to use. Can be used in Node.js client
+     * environment to manually specify certificate information.
+     */
+    cert?: string;
+    /**
+     * (SSL) An authority certificate or array of authority certificates to
+     * check the remote host against.. Can be used in Node.js client
+     * environment to manually specify certificate information.
+     */
+    ca?: string | string[];
+    /**
+     * (SSL) A string describing the ciphers to use or exclude. Consult the
+     * [cipher format list]
+     * (http://www.openssl.org/docs/apps/ciphers.html#CIPHER_LIST_FORMAT) for
+     * details on the format.. Can be used in Node.js client environment to
+     * manually specify certificate information.
+     */
+    ciphers?: string;
+    /**
+     * (SSL) If true, the server certificate is verified against the list of
+     * supplied CAs. An 'error' event is emitted if verification fails.
+     * Verification happens at the connection level, before the HTTP request
+     * is sent. Can be used in Node.js client environment to manually specify
+     * certificate information.
+     */
+    rejectUnauthorized?: boolean;
+    /**
+     * Headers that will be passed for each request to the server (via xhr-polling and via websockets).
+     * These values then can be used during handshake or for special proxies.
+     */
+    extraHeaders?: {
+        [header: string]: string;
+    };
+    /**
+     * Whether to include credentials (cookies, authorization headers, TLS
+     * client certificates, etc.) with cross-origin XHR polling requests
+     * @default false
+     */
+    withCredentials?: boolean;
+    /**
+     * Whether to automatically close the connection whenever the beforeunload event is received.
+     * @default false
+     */
+    closeOnBeforeunload?: boolean;
+    /**
+     * Whether to always use the native timeouts. This allows the client to
+     * reconnect when the native timeout functions are overridden, such as when
+     * mock clocks are installed.
+     * @default false
+     */
+    useNativeTimers?: boolean;
+    /**
+     * Whether the heartbeat timer should be unref'ed, in order not to keep the Node.js event loop active.
+     *
+     * @see https://nodejs.org/api/timers.html#timeoutunref
+     * @default false
+     */
+    autoUnref?: boolean;
+    /**
+     * parameters of the WebSocket permessage-deflate extension (see ws module api docs). Set to false to disable.
+     * @default false
+     */
+    perMessageDeflate?: {
+        threshold: number;
+    };
+    /**
+     * The path to get our client file from, in the case of the server
+     * serving it
+     * @default '/engine.io'
+     */
+    path?: string;
+    /**
+     * Whether we should add a trailing slash to the request path.
+     * @default true
+     */
+    addTrailingSlash?: boolean;
+    /**
+     * Either a single protocol string or an array of protocol strings. These strings are used to indicate sub-protocols,
+     * so that a single server can implement multiple WebSocket sub-protocols (for example, you might want one server to
+     * be able to handle different types of interactions depending on the specified protocol)
+     * @default []
+     */
+    protocols?: string | string[];
+}
+type TransportCtor = {
+    new (o: any): Transport;
+};
+type BaseSocketOptions = Omit<SocketOptions, "transports"> & {
+    transports: TransportCtor[];
+};
+interface HandshakeData {
+    sid: string;
+    upgrades: string[];
+    pingInterval: number;
+    pingTimeout: number;
+    maxPayload: number;
+}
+interface SocketReservedEvents {
+    open: () => void;
+    handshake: (data: HandshakeData) => void;
+    packet: (packet: Packet) => void;
+    packetCreate: (packet: Packet) => void;
+    data: (data: RawData) => void;
+    message: (data: RawData) => void;
+    drain: () => void;
+    flush: () => void;
+    heartbeat: () => void;
+    ping: () => void;
+    pong: () => void;
+    error: (err: string | Error) => void;
+    upgrading: (transport: Transport) => void;
+    upgrade: (transport: Transport) => void;
+    upgradeError: (err: Error) => void;
+    close: (reason: string, description?: CloseDetails | Error) => void;
+}
+type SocketState = "opening" | "open" | "closing" | "closed";
+interface WriteOptions {
+    compress?: boolean;
+}
+/**
+ * This class provides a WebSocket-like interface to connect to an Engine.IO server. The connection will be established
+ * with one of the available low-level transports, like HTTP long-polling, WebSocket or WebTransport.
+ *
+ * This class comes without upgrade mechanism, which means that it will keep the first low-level transport that
+ * successfully establishes the connection.
+ *
+ * In order to allow tree-shaking, there are no transports included, that's why the `transports` option is mandatory.
+ *
+ * @example
+ * import { SocketWithoutUpgrade, WebSocket } from "engine.io-client";
+ *
+ * const socket = new SocketWithoutUpgrade({
+ *   transports: [WebSocket]
+ * });
+ *
+ * socket.on("open", () => {
+ *   socket.send("hello");
+ * });
+ *
+ * @see SocketWithUpgrade
+ * @see Socket
+ */
+export declare class SocketWithoutUpgrade extends Emitter<Record<never, never>, Record<never, never>, SocketReservedEvents> {
+    id: string;
+    transport: Transport;
+    binaryType: BinaryType;
+    readyState: SocketState;
+    writeBuffer: Packet[];
+    protected readonly opts: BaseSocketOptions;
+    protected readonly transports: string[];
+    protected upgrading: boolean;
+    protected setTimeoutFn: typeof setTimeout;
+    private _prevBufferLen;
+    private _pingInterval;
+    private _pingTimeout;
+    private _maxPayload?;
+    private _pingTimeoutTimer;
+    /**
+     * The expiration timestamp of the {@link _pingTimeoutTimer} object is tracked, in case the timer is throttled and the
+     * callback is not fired on time. This can happen for example when a laptop is suspended or when a phone is locked.
+     */
+    private _pingTimeoutTime;
+    private clearTimeoutFn;
+    private readonly _beforeunloadEventListener;
+    private readonly _offlineEventListener;
+    private readonly secure;
+    private readonly hostname;
+    private readonly port;
+    private readonly _transportsByName;
+    /**
+     * The cookie jar will store the cookies sent by the server (Node. js only).
+     */
+    readonly _cookieJar: CookieJar;
+    static priorWebsocketSuccess: boolean;
+    static protocol: number;
+    /**
+     * Socket constructor.
+     *
+     * @param {String|Object} uri - uri or options
+     * @param {Object} opts - options
+     */
+    constructor(uri: string | BaseSocketOptions, opts: BaseSocketOptions);
+    /**
+     * Creates transport of the given type.
+     *
+     * @param {String} name - transport name
+     * @return {Transport}
+     * @private
+     */
+    protected createTransport(name: string): Transport;
+    /**
+     * Initializes transport to use and starts probe.
+     *
+     * @private
+     */
+    private _open;
+    /**
+     * Sets the current transport. Disables the existing one (if any).
+     *
+     * @private
+     */
+    protected setTransport(transport: Transport): void;
+    /**
+     * Called when connection is deemed open.
+     *
+     * @private
+     */
+    protected onOpen(): void;
+    /**
+     * Handles a packet.
+     *
+     * @private
+     */
+    private _onPacket;
+    /**
+     * Called upon handshake completion.
+     *
+     * @param {Object} data - handshake obj
+     * @private
+     */
+    protected onHandshake(data: HandshakeData): void;
+    /**
+     * Sets and resets ping timeout timer based on server pings.
+     *
+     * @private
+     */
+    private _resetPingTimeout;
+    /**
+     * Called on `drain` event
+     *
+     * @private
+     */
+    private _onDrain;
+    /**
+     * Flush write buffers.
+     *
+     * @private
+     */
+    protected flush(): void;
+    /**
+     * Ensure the encoded size of the writeBuffer is below the maxPayload value sent by the server (only for HTTP
+     * long-polling)
+     *
+     * @private
+     */
+    private _getWritablePackets;
+    /**
+     * Checks whether the heartbeat timer has expired but the socket has not yet been notified.
+     *
+     * Note: this method is private for now because it does not really fit the WebSocket API, but if we put it in the
+     * `write()` method then the message would not be buffered by the Socket.IO client.
+     *
+     * @return {boolean}
+     * @private
+     */
+    _hasPingExpired(): boolean;
+    /**
+     * Sends a message.
+     *
+     * @param {String} msg - message.
+     * @param {Object} options.
+     * @param {Function} fn - callback function.
+     * @return {Socket} for chaining.
+     */
+    write(msg: RawData, options?: WriteOptions, fn?: () => void): this;
+    /**
+     * Sends a message. Alias of {@link Socket#write}.
+     *
+     * @param {String} msg - message.
+     * @param {Object} options.
+     * @param {Function} fn - callback function.
+     * @return {Socket} for chaining.
+     */
+    send(msg: RawData, options?: WriteOptions, fn?: () => void): this;
+    /**
+     * Sends a packet.
+     *
+     * @param {String} type: packet type.
+     * @param {String} data.
+     * @param {Object} options.
+     * @param {Function} fn - callback function.
+     * @private
+     */
+    private _sendPacket;
+    /**
+     * Closes the connection.
+     */
+    close(): this;
+    /**
+     * Called upon transport error
+     *
+     * @private
+     */
+    private _onError;
+    /**
+     * Called upon transport close.
+     *
+     * @private
+     */
+    private _onClose;
+}
+/**
+ * This class provides a WebSocket-like interface to connect to an Engine.IO server. The connection will be established
+ * with one of the available low-level transports, like HTTP long-polling, WebSocket or WebTransport.
+ *
+ * This class comes with an upgrade mechanism, which means that once the connection is established with the first
+ * low-level transport, it will try to upgrade to a better transport.
+ *
+ * In order to allow tree-shaking, there are no transports included, that's why the `transports` option is mandatory.
+ *
+ * @example
+ * import { SocketWithUpgrade, WebSocket } from "engine.io-client";
+ *
+ * const socket = new SocketWithUpgrade({
+ *   transports: [WebSocket]
+ * });
+ *
+ * socket.on("open", () => {
+ *   socket.send("hello");
+ * });
+ *
+ * @see SocketWithoutUpgrade
+ * @see Socket
+ */
+export declare class SocketWithUpgrade extends SocketWithoutUpgrade {
+    private _upgrades;
+    onOpen(): void;
+    /**
+     * Probes a transport.
+     *
+     * @param {String} name - transport name
+     * @private
+     */
+    private _probe;
+    onHandshake(data: HandshakeData): void;
+    /**
+     * Filters upgrades, returning only those matching client transports.
+     *
+     * @param {Array} upgrades - server upgrades
+     * @private
+     */
+    private _filterUpgrades;
+}
+/**
+ * This class provides a WebSocket-like interface to connect to an Engine.IO server. The connection will be established
+ * with one of the available low-level transports, like HTTP long-polling, WebSocket or WebTransport.
+ *
+ * This class comes with an upgrade mechanism, which means that once the connection is established with the first
+ * low-level transport, it will try to upgrade to a better transport.
+ *
+ * @example
+ * import { Socket } from "engine.io-client";
+ *
+ * const socket = new Socket();
+ *
+ * socket.on("open", () => {
+ *   socket.send("hello");
+ * });
+ *
+ * @see SocketWithoutUpgrade
+ * @see SocketWithUpgrade
+ */
+export declare class Socket extends SocketWithUpgrade {
+    constructor(uri?: string, opts?: SocketOptions);
+    constructor(opts: SocketOptions);
+}
+export {};

node_modules/engine.io-client/build/esm-debug/socket.js

@@ -0,0 +1,756 @@
+import { transports as DEFAULT_TRANSPORTS } from "./transports/index.js";
+import { installTimerFunctions, byteLength } from "./util.js";
+import { decode } from "./contrib/parseqs.js";
+import { parse } from "./contrib/parseuri.js";
+import { Emitter } from "@socket.io/component-emitter";
+import { protocol } from "engine.io-parser";
+import { createCookieJar, defaultBinaryType, nextTick, } from "./globals.node.js";
+import debugModule from "debug"; // debug()
+const debug = debugModule("engine.io-client:socket"); // debug()
+const withEventListeners = typeof addEventListener === "function" &&
+    typeof removeEventListener === "function";
+const OFFLINE_EVENT_LISTENERS = [];
+if (withEventListeners) {
+    // within a ServiceWorker, any event handler for the 'offline' event must be added on the initial evaluation of the
+    // script, so we create one single event listener here which will forward the event to the socket instances
+    addEventListener("offline", () => {
+        debug("closing %d connection(s) because the network was lost", OFFLINE_EVENT_LISTENERS.length);
+        OFFLINE_EVENT_LISTENERS.forEach((listener) => listener());
+    }, false);
+}
+/**
+ * This class provides a WebSocket-like interface to connect to an Engine.IO server. The connection will be established
+ * with one of the available low-level transports, like HTTP long-polling, WebSocket or WebTransport.
+ *
+ * This class comes without upgrade mechanism, which means that it will keep the first low-level transport that
+ * successfully establishes the connection.
+ *
+ * In order to allow tree-shaking, there are no transports included, that's why the `transports` option is mandatory.
+ *
+ * @example
+ * import { SocketWithoutUpgrade, WebSocket } from "engine.io-client";
+ *
+ * const socket = new SocketWithoutUpgrade({
+ *   transports: [WebSocket]
+ * });
+ *
+ * socket.on("open", () => {
+ *   socket.send("hello");
+ * });
+ *
+ * @see SocketWithUpgrade
+ * @see Socket
+ */
+export class SocketWithoutUpgrade extends Emitter {
+    /**
+     * Socket constructor.
+     *
+     * @param {String|Object} uri - uri or options
+     * @param {Object} opts - options
+     */
+    constructor(uri, opts) {
+        super();
+        this.binaryType = defaultBinaryType;
+        this.writeBuffer = [];
+        this._prevBufferLen = 0;
+        this._pingInterval = -1;
+        this._pingTimeout = -1;
+        this._maxPayload = -1;
+        /**
+         * The expiration timestamp of the {@link _pingTimeoutTimer} object is tracked, in case the timer is throttled and the
+         * callback is not fired on time. This can happen for example when a laptop is suspended or when a phone is locked.
+         */
+        this._pingTimeoutTime = Infinity;
+        if (uri && "object" === typeof uri) {
+            opts = uri;
+            uri = null;
+        }
+        if (uri) {
+            const parsedUri = parse(uri);
+            opts.hostname = parsedUri.host;
+            opts.secure =
+                parsedUri.protocol === "https" || parsedUri.protocol === "wss";
+            opts.port = parsedUri.port;
+            if (parsedUri.query)
+                opts.query = parsedUri.query;
+        }
+        else if (opts.host) {
+            opts.hostname = parse(opts.host).host;
+        }
+        installTimerFunctions(this, opts);
+        this.secure =
+            null != opts.secure
+                ? opts.secure
+                : typeof location !== "undefined" && "https:" === location.protocol;
+        if (opts.hostname && !opts.port) {
+            // if no port is specified manually, use the protocol default
+            opts.port = this.secure ? "443" : "80";
+        }
+        this.hostname =
+            opts.hostname ||
+                (typeof location !== "undefined" ? location.hostname : "localhost");
+        this.port =
+            opts.port ||
+                (typeof location !== "undefined" && location.port
+                    ? location.port
+                    : this.secure
+                        ? "443"
+                        : "80");
+        this.transports = [];
+        this._transportsByName = {};
+        opts.transports.forEach((t) => {
+            const transportName = t.prototype.name;
+            this.transports.push(transportName);
+            this._transportsByName[transportName] = t;
+        });
+        this.opts = Object.assign({
+            path: "/engine.io",
+            agent: false,
+            withCredentials: false,
+            upgrade: true,
+            timestampParam: "t",
+            rememberUpgrade: false,
+            addTrailingSlash: true,
+            rejectUnauthorized: true,
+            perMessageDeflate: {
+                threshold: 1024,
+            },
+            transportOptions: {},
+            closeOnBeforeunload: false,
+        }, opts);
+        this.opts.path =
+            this.opts.path.replace(/\/$/, "") +
+                (this.opts.addTrailingSlash ? "/" : "");
+        if (typeof this.opts.query === "string") {
+            this.opts.query = decode(this.opts.query);
+        }
+        if (withEventListeners) {
+            if (this.opts.closeOnBeforeunload) {
+                // Firefox closes the connection when the "beforeunload" event is emitted but not Chrome. This event listener
+                // ensures every browser behaves the same (no "disconnect" event at the Socket.IO level when the page is
+                // closed/reloaded)
+                this._beforeunloadEventListener = () => {
+                    if (this.transport) {
+                        // silently close the transport
+                        this.transport.removeAllListeners();
+                        this.transport.close();
+                    }
+                };
+                addEventListener("beforeunload", this._beforeunloadEventListener, false);
+            }
+            if (this.hostname !== "localhost") {
+                debug("adding listener for the 'offline' event");
+                this._offlineEventListener = () => {
+                    this._onClose("transport close", {
+                        description: "network connection lost",
+                    });
+                };
+                OFFLINE_EVENT_LISTENERS.push(this._offlineEventListener);
+            }
+        }
+        if (this.opts.withCredentials) {
+            this._cookieJar = createCookieJar();
+        }
+        this._open();
+    }
+    /**
+     * Creates transport of the given type.
+     *
+     * @param {String} name - transport name
+     * @return {Transport}
+     * @private
+     */
+    createTransport(name) {
+        debug('creating transport "%s"', name);
+        const query = Object.assign({}, this.opts.query);
+        // append engine.io protocol identifier
+        query.EIO = protocol;
+        // transport name
+        query.transport = name;
+        // session id if we already have one
+        if (this.id)
+            query.sid = this.id;
+        const opts = Object.assign({}, this.opts, {
+            query,
+            socket: this,
+            hostname: this.hostname,
+            secure: this.secure,
+            port: this.port,
+        }, this.opts.transportOptions[name]);
+        debug("options: %j", opts);
+        return new this._transportsByName[name](opts);
+    }
+    /**
+     * Initializes transport to use and starts probe.
+     *
+     * @private
+     */
+    _open() {
+        if (this.transports.length === 0) {
+            // Emit error on next tick so it can be listened to
+            this.setTimeoutFn(() => {
+                this.emitReserved("error", "No transports available");
+            }, 0);
+            return;
+        }
+        const transportName = this.opts.rememberUpgrade &&
+            SocketWithoutUpgrade.priorWebsocketSuccess &&
+            this.transports.indexOf("websocket") !== -1
+            ? "websocket"
+            : this.transports[0];
+        this.readyState = "opening";
+        const transport = this.createTransport(transportName);
+        transport.open();
+        this.setTransport(transport);
+    }
+    /**
+     * Sets the current transport. Disables the existing one (if any).
+     *
+     * @private
+     */
+    setTransport(transport) {
+        debug("setting transport %s", transport.name);
+        if (this.transport) {
+            debug("clearing existing transport %s", this.transport.name);
+            this.transport.removeAllListeners();
+        }
+        // set up transport
+        this.transport = transport;
+        // set up transport listeners
+        transport
+            .on("drain", this._onDrain.bind(this))
+            .on("packet", this._onPacket.bind(this))
+            .on("error", this._onError.bind(this))
+            .on("close", (reason) => this._onClose("transport close", reason));
+    }
+    /**
+     * Called when connection is deemed open.
+     *
+     * @private
+     */
+    onOpen() {
+        debug("socket open");
+        this.readyState = "open";
+        SocketWithoutUpgrade.priorWebsocketSuccess =
+            "websocket" === this.transport.name;
+        this.emitReserved("open");
+        this.flush();
+    }
+    /**
+     * Handles a packet.
+     *
+     * @private
+     */
+    _onPacket(packet) {
+        if ("opening" === this.readyState ||
+            "open" === this.readyState ||
+            "closing" === this.readyState) {
+            debug('socket receive: type "%s", data "%s"', packet.type, packet.data);
+            this.emitReserved("packet", packet);
+            // Socket is live - any packet counts
+            this.emitReserved("heartbeat");
+            switch (packet.type) {
+                case "open":
+                    this.onHandshake(JSON.parse(packet.data));
+                    break;
+                case "ping":
+                    this._sendPacket("pong");
+                    this.emitReserved("ping");
+                    this.emitReserved("pong");
+                    this._resetPingTimeout();
+                    break;
+                case "error":
+                    const err = new Error("server error");
+                    // @ts-ignore
+                    err.code = packet.data;
+                    this._onError(err);
+                    break;
+                case "message":
+                    this.emitReserved("data", packet.data);
+                    this.emitReserved("message", packet.data);
+                    break;
+            }
+        }
+        else {
+            debug('packet received with socket readyState "%s"', this.readyState);
+        }
+    }
+    /**
+     * Called upon handshake completion.
+     *
+     * @param {Object} data - handshake obj
+     * @private
+     */
+    onHandshake(data) {
+        this.emitReserved("handshake", data);
+        this.id = data.sid;
+        this.transport.query.sid = data.sid;
+        this._pingInterval = data.pingInterval;
+        this._pingTimeout = data.pingTimeout;
+        this._maxPayload = data.maxPayload;
+        this.onOpen();
+        // In case open handler closes socket
+        if ("closed" === this.readyState)
+            return;
+        this._resetPingTimeout();
+    }
+    /**
+     * Sets and resets ping timeout timer based on server pings.
+     *
+     * @private
+     */
+    _resetPingTimeout() {
+        this.clearTimeoutFn(this._pingTimeoutTimer);
+        const delay = this._pingInterval + this._pingTimeout;
+        this._pingTimeoutTime = Date.now() + delay;
+        this._pingTimeoutTimer = this.setTimeoutFn(() => {
+            this._onClose("ping timeout");
+        }, delay);
+        if (this.opts.autoUnref) {
+            this._pingTimeoutTimer.unref();
+        }
+    }
+    /**
+     * Called on `drain` event
+     *
+     * @private
+     */
+    _onDrain() {
+        this.writeBuffer.splice(0, this._prevBufferLen);
+        // setting prevBufferLen = 0 is very important
+        // for example, when upgrading, upgrade packet is sent over,
+        // and a nonzero prevBufferLen could cause problems on `drain`
+        this._prevBufferLen = 0;
+        if (0 === this.writeBuffer.length) {
+            this.emitReserved("drain");
+        }
+        else {
+            this.flush();
+        }
+    }
+    /**
+     * Flush write buffers.
+     *
+     * @private
+     */
+    flush() {
+        if ("closed" !== this.readyState &&
+            this.transport.writable &&
+            !this.upgrading &&
+            this.writeBuffer.length) {
+            const packets = this._getWritablePackets();
+            debug("flushing %d packets in socket", packets.length);
+            this.transport.send(packets);
+            // keep track of current length of writeBuffer
+            // splice writeBuffer and callbackBuffer on `drain`
+            this._prevBufferLen = packets.length;
+            this.emitReserved("flush");
+        }
+    }
+    /**
+     * Ensure the encoded size of the writeBuffer is below the maxPayload value sent by the server (only for HTTP
+     * long-polling)
+     *
+     * @private
+     */
+    _getWritablePackets() {
+        const shouldCheckPayloadSize = this._maxPayload &&
+            this.transport.name === "polling" &&
+            this.writeBuffer.length > 1;
+        if (!shouldCheckPayloadSize) {
+            return this.writeBuffer;
+        }
+        let payloadSize = 1; // first packet type
+        for (let i = 0; i < this.writeBuffer.length; i++) {
+            const data = this.writeBuffer[i].data;
+            if (data) {
+                payloadSize += byteLength(data);
+            }
+            if (i > 0 && payloadSize > this._maxPayload) {
+                debug("only send %d out of %d packets", i, this.writeBuffer.length);
+                return this.writeBuffer.slice(0, i);
+            }
+            payloadSize += 2; // separator + packet type
+        }
+        debug("payload size is %d (max: %d)", payloadSize, this._maxPayload);
+        return this.writeBuffer;
+    }
+    /**
+     * Checks whether the heartbeat timer has expired but the socket has not yet been notified.
+     *
+     * Note: this method is private for now because it does not really fit the WebSocket API, but if we put it in the
+     * `write()` method then the message would not be buffered by the Socket.IO client.
+     *
+     * @return {boolean}
+     * @private
+     */
+    /* private */ _hasPingExpired() {
+        if (!this._pingTimeoutTime)
+            return true;
+        const hasExpired = Date.now() > this._pingTimeoutTime;
+        if (hasExpired) {
+            debug("throttled timer detected, scheduling connection close");
+            this._pingTimeoutTime = 0;
+            nextTick(() => {
+                this._onClose("ping timeout");
+            }, this.setTimeoutFn);
+        }
+        return hasExpired;
+    }
+    /**
+     * Sends a message.
+     *
+     * @param {String} msg - message.
+     * @param {Object} options.
+     * @param {Function} fn - callback function.
+     * @return {Socket} for chaining.
+     */
+    write(msg, options, fn) {
+        this._sendPacket("message", msg, options, fn);
+        return this;
+    }
+    /**
+     * Sends a message. Alias of {@link Socket#write}.
+     *
+     * @param {String} msg - message.
+     * @param {Object} options.
+     * @param {Function} fn - callback function.
+     * @return {Socket} for chaining.
+     */
+    send(msg, options, fn) {
+        this._sendPacket("message", msg, options, fn);
+        return this;
+    }
+    /**
+     * Sends a packet.
+     *
+     * @param {String} type: packet type.
+     * @param {String} data.
+     * @param {Object} options.
+     * @param {Function} fn - callback function.
+     * @private
+     */
+    _sendPacket(type, data, options, fn) {
+        if ("function" === typeof data) {
+            fn = data;
+            data = undefined;
+        }
+        if ("function" === typeof options) {
+            fn = options;
+            options = null;
+        }
+        if ("closing" === this.readyState || "closed" === this.readyState) {
+            return;
+        }
+        options = options || {};
+        options.compress = false !== options.compress;
+        const packet = {
+            type: type,
+            data: data,
+            options: options,
+        };
+        this.emitReserved("packetCreate", packet);
+        this.writeBuffer.push(packet);
+        if (fn)
+            this.once("flush", fn);
+        this.flush();
+    }
+    /**
+     * Closes the connection.
+     */
+    close() {
+        const close = () => {
+            this._onClose("forced close");
+            debug("socket closing - telling transport to close");
+            this.transport.close();
+        };
+        const cleanupAndClose = () => {
+            this.off("upgrade", cleanupAndClose);
+            this.off("upgradeError", cleanupAndClose);
+            close();
+        };
+        const waitForUpgrade = () => {
+            // wait for upgrade to finish since we can't send packets while pausing a transport
+            this.once("upgrade", cleanupAndClose);
+            this.once("upgradeError", cleanupAndClose);
+        };
+        if ("opening" === this.readyState || "open" === this.readyState) {
+            this.readyState = "closing";
+            if (this.writeBuffer.length) {
+                this.once("drain", () => {
+                    if (this.upgrading) {
+                        waitForUpgrade();
+                    }
+                    else {
+                        close();
+                    }
+                });
+            }
+            else if (this.upgrading) {
+                waitForUpgrade();
+            }
+            else {
+                close();
+            }
+        }
+        return this;
+    }
+    /**
+     * Called upon transport error
+     *
+     * @private
+     */
+    _onError(err) {
+        debug("socket error %j", err);
+        SocketWithoutUpgrade.priorWebsocketSuccess = false;
+        if (this.opts.tryAllTransports &&
+            this.transports.length > 1 &&
+            this.readyState === "opening") {
+            debug("trying next transport");
+            this.transports.shift();
+            return this._open();
+        }
+        this.emitReserved("error", err);
+        this._onClose("transport error", err);
+    }
+    /**
+     * Called upon transport close.
+     *
+     * @private
+     */
+    _onClose(reason, description) {
+        if ("opening" === this.readyState ||
+            "open" === this.readyState ||
+            "closing" === this.readyState) {
+            debug('socket close with reason: "%s"', reason);
+            // clear timers
+            this.clearTimeoutFn(this._pingTimeoutTimer);
+            // stop event from firing again for transport
+            this.transport.removeAllListeners("close");
+            // ensure transport won't stay open
+            this.transport.close();
+            // ignore further transport communication
+            this.transport.removeAllListeners();
+            if (withEventListeners) {
+                if (this._beforeunloadEventListener) {
+                    removeEventListener("beforeunload", this._beforeunloadEventListener, false);
+                }
+                if (this._offlineEventListener) {
+                    const i = OFFLINE_EVENT_LISTENERS.indexOf(this._offlineEventListener);
+                    if (i !== -1) {
+                        debug("removing listener for the 'offline' event");
+                        OFFLINE_EVENT_LISTENERS.splice(i, 1);
+                    }
+                }
+            }
+            // set ready state
+            this.readyState = "closed";
+            // clear session id
+            this.id = null;
+            // emit close event
+            this.emitReserved("close", reason, description);
+            // clean buffers after, so users can still
+            // grab the buffers on `close` event
+            this.writeBuffer = [];
+            this._prevBufferLen = 0;
+        }
+    }
+}
+SocketWithoutUpgrade.protocol = protocol;
+/**
+ * This class provides a WebSocket-like interface to connect to an Engine.IO server. The connection will be established
+ * with one of the available low-level transports, like HTTP long-polling, WebSocket or WebTransport.
+ *
+ * This class comes with an upgrade mechanism, which means that once the connection is established with the first
+ * low-level transport, it will try to upgrade to a better transport.
+ *
+ * In order to allow tree-shaking, there are no transports included, that's why the `transports` option is mandatory.
+ *
+ * @example
+ * import { SocketWithUpgrade, WebSocket } from "engine.io-client";
+ *
+ * const socket = new SocketWithUpgrade({
+ *   transports: [WebSocket]
+ * });
+ *
+ * socket.on("open", () => {
+ *   socket.send("hello");
+ * });
+ *
+ * @see SocketWithoutUpgrade
+ * @see Socket
+ */
+export class SocketWithUpgrade extends SocketWithoutUpgrade {
+    constructor() {
+        super(...arguments);
+        this._upgrades = [];
+    }
+    onOpen() {
+        super.onOpen();
+        if ("open" === this.readyState && this.opts.upgrade) {
+            debug("starting upgrade probes");
+            for (let i = 0; i < this._upgrades.length; i++) {
+                this._probe(this._upgrades[i]);
+            }
+        }
+    }
+    /**
+     * Probes a transport.
+     *
+     * @param {String} name - transport name
+     * @private
+     */
+    _probe(name) {
+        debug('probing transport "%s"', name);
+        let transport = this.createTransport(name);
+        let failed = false;
+        SocketWithoutUpgrade.priorWebsocketSuccess = false;
+        const onTransportOpen = () => {
+            if (failed)
+                return;
+            debug('probe transport "%s" opened', name);
+            transport.send([{ type: "ping", data: "probe" }]);
+            transport.once("packet", (msg) => {
+                if (failed)
+                    return;
+                if ("pong" === msg.type && "probe" === msg.data) {
+                    debug('probe transport "%s" pong', name);
+                    this.upgrading = true;
+                    this.emitReserved("upgrading", transport);
+                    if (!transport)
+                        return;
+                    SocketWithoutUpgrade.priorWebsocketSuccess =
+                        "websocket" === transport.name;
+                    debug('pausing current transport "%s"', this.transport.name);
+                    this.transport.pause(() => {
+                        if (failed)
+                            return;
+                        if ("closed" === this.readyState)
+                            return;
+                        debug("changing transport and sending upgrade packet");
+                        cleanup();
+                        this.setTransport(transport);
+                        transport.send([{ type: "upgrade" }]);
+                        this.emitReserved("upgrade", transport);
+                        transport = null;
+                        this.upgrading = false;
+                        this.flush();
+                    });
+                }
+                else {
+                    debug('probe transport "%s" failed', name);
+                    const err = new Error("probe error");
+                    // @ts-ignore
+                    err.transport = transport.name;
+                    this.emitReserved("upgradeError", err);
+                }
+            });
+        };
+        function freezeTransport() {
+            if (failed)
+                return;
+            // Any callback called by transport should be ignored since now
+            failed = true;
+            cleanup();
+            transport.close();
+            transport = null;
+        }
+        // Handle any error that happens while probing
+        const onerror = (err) => {
+            const error = new Error("probe error: " + err);
+            // @ts-ignore
+            error.transport = transport.name;
+            freezeTransport();
+            debug('probe transport "%s" failed because of error: %s', name, err);
+            this.emitReserved("upgradeError", error);
+        };
+        function onTransportClose() {
+            onerror("transport closed");
+        }
+        // When the socket is closed while we're probing
+        function onclose() {
+            onerror("socket closed");
+        }
+        // When the socket is upgraded while we're probing
+        function onupgrade(to) {
+            if (transport && to.name !== transport.name) {
+                debug('"%s" works - aborting "%s"', to.name, transport.name);
+                freezeTransport();
+            }
+        }
+        // Remove all listeners on the transport and on self
+        const cleanup = () => {
+            transport.removeListener("open", onTransportOpen);
+            transport.removeListener("error", onerror);
+            transport.removeListener("close", onTransportClose);
+            this.off("close", onclose);
+            this.off("upgrading", onupgrade);
+        };
+        transport.once("open", onTransportOpen);
+        transport.once("error", onerror);
+        transport.once("close", onTransportClose);
+        this.once("close", onclose);
+        this.once("upgrading", onupgrade);
+        if (this._upgrades.indexOf("webtransport") !== -1 &&
+            name !== "webtransport") {
+            // favor WebTransport
+            this.setTimeoutFn(() => {
+                if (!failed) {
+                    transport.open();
+                }
+            }, 200);
+        }
+        else {
+            transport.open();
+        }
+    }
+    onHandshake(data) {
+        this._upgrades = this._filterUpgrades(data.upgrades);
+        super.onHandshake(data);
+    }
+    /**
+     * Filters upgrades, returning only those matching client transports.
+     *
+     * @param {Array} upgrades - server upgrades
+     * @private
+     */
+    _filterUpgrades(upgrades) {
+        const filteredUpgrades = [];
+        for (let i = 0; i < upgrades.length; i++) {
+            if (~this.transports.indexOf(upgrades[i]))
+                filteredUpgrades.push(upgrades[i]);
+        }
+        return filteredUpgrades;
+    }
+}
+/**
+ * This class provides a WebSocket-like interface to connect to an Engine.IO server. The connection will be established
+ * with one of the available low-level transports, like HTTP long-polling, WebSocket or WebTransport.
+ *
+ * This class comes with an upgrade mechanism, which means that once the connection is established with the first
+ * low-level transport, it will try to upgrade to a better transport.
+ *
+ * @example
+ * import { Socket } from "engine.io-client";
+ *
+ * const socket = new Socket();
+ *
+ * socket.on("open", () => {
+ *   socket.send("hello");
+ * });
+ *
+ * @see SocketWithoutUpgrade
+ * @see SocketWithUpgrade
+ */
+export class Socket extends SocketWithUpgrade {
+    constructor(uri, opts = {}) {
+        const o = typeof uri === "object" ? uri : opts;
+        if (!o.transports ||
+            (o.transports && typeof o.transports[0] === "string")) {
+            o.transports = (o.transports || ["polling", "websocket", "webtransport"])
+                .map((transportName) => DEFAULT_TRANSPORTS[transportName])
+                .filter((t) => !!t);
+        }
+        super(uri, o);
+    }
+}

node_modules/engine.io-client/build/esm-debug/transport.d.ts

@@ -0,0 +1,106 @@
+import type { Packet, RawData } from "engine.io-parser";
+import { Emitter } from "@socket.io/component-emitter";
+import type { Socket, SocketOptions } from "./socket.js";
+export declare class TransportError extends Error {
+    readonly description: any;
+    readonly context: any;
+    readonly type = "TransportError";
+    constructor(reason: string, description: any, context: any);
+}
+export interface CloseDetails {
+    description: string;
+    context?: unknown;
+}
+interface TransportReservedEvents {
+    open: () => void;
+    error: (err: TransportError) => void;
+    packet: (packet: Packet) => void;
+    close: (details?: CloseDetails) => void;
+    poll: () => void;
+    pollComplete: () => void;
+    drain: () => void;
+}
+type TransportState = "opening" | "open" | "closed" | "pausing" | "paused";
+export declare abstract class Transport extends Emitter<Record<never, never>, Record<never, never>, TransportReservedEvents> {
+    query: Record<string, string>;
+    writable: boolean;
+    protected opts: SocketOptions;
+    protected supportsBinary: boolean;
+    protected readyState: TransportState;
+    protected socket: Socket;
+    protected setTimeoutFn: typeof setTimeout;
+    /**
+     * Transport abstract constructor.
+     *
+     * @param {Object} opts - options
+     * @protected
+     */
+    constructor(opts: any);
+    /**
+     * Emits an error.
+     *
+     * @param {String} reason
+     * @param description
+     * @param context - the error context
+     * @return {Transport} for chaining
+     * @protected
+     */
+    protected onError(reason: string, description: any, context?: any): this;
+    /**
+     * Opens the transport.
+     */
+    open(): this;
+    /**
+     * Closes the transport.
+     */
+    close(): this;
+    /**
+     * Sends multiple packets.
+     *
+     * @param {Array} packets
+     */
+    send(packets: any): void;
+    /**
+     * Called upon open
+     *
+     * @protected
+     */
+    protected onOpen(): void;
+    /**
+     * Called with data.
+     *
+     * @param {String} data
+     * @protected
+     */
+    protected onData(data: RawData): void;
+    /**
+     * Called with a decoded packet.
+     *
+     * @protected
+     */
+    protected onPacket(packet: Packet): void;
+    /**
+     * Called upon close.
+     *
+     * @protected
+     */
+    protected onClose(details?: CloseDetails): void;
+    /**
+     * The name of the transport
+     */
+    abstract get name(): string;
+    /**
+     * Pauses the transport, in order not to lose packets during an upgrade.
+     *
+     * @param onPause
+     */
+    pause(onPause: () => void): void;
+    protected createUri(schema: string, query?: Record<string, unknown>): string;
+    private _hostname;
+    private _port;
+    private _query;
+    protected abstract doOpen(): any;
+    protected abstract doClose(): any;
+    protected abstract write(packets: Packet[]): any;
+}
+export {};

node_modules/engine.io-client/build/esm-debug/transport.js

@@ -0,0 +1,145 @@
+import { decodePacket } from "engine.io-parser";
+import { Emitter } from "@socket.io/component-emitter";
+import { installTimerFunctions } from "./util.js";
+import { encode } from "./contrib/parseqs.js";
+import debugModule from "debug"; // debug()
+const debug = debugModule("engine.io-client:transport"); // debug()
+export class TransportError extends Error {
+    constructor(reason, description, context) {
+        super(reason);
+        this.description = description;
+        this.context = context;
+        this.type = "TransportError";
+    }
+}
+export class Transport extends Emitter {
+    /**
+     * Transport abstract constructor.
+     *
+     * @param {Object} opts - options
+     * @protected
+     */
+    constructor(opts) {
+        super();
+        this.writable = false;
+        installTimerFunctions(this, opts);
+        this.opts = opts;
+        this.query = opts.query;
+        this.socket = opts.socket;
+        this.supportsBinary = !opts.forceBase64;
+    }
+    /**
+     * Emits an error.
+     *
+     * @param {String} reason
+     * @param description
+     * @param context - the error context
+     * @return {Transport} for chaining
+     * @protected
+     */
+    onError(reason, description, context) {
+        super.emitReserved("error", new TransportError(reason, description, context));
+        return this;
+    }
+    /**
+     * Opens the transport.
+     */
+    open() {
+        this.readyState = "opening";
+        this.doOpen();
+        return this;
+    }
+    /**
+     * Closes the transport.
+     */
+    close() {
+        if (this.readyState === "opening" || this.readyState === "open") {
+            this.doClose();
+            this.onClose();
+        }
+        return this;
+    }
+    /**
+     * Sends multiple packets.
+     *
+     * @param {Array} packets
+     */
+    send(packets) {
+        if (this.readyState === "open") {
+            this.write(packets);
+        }
+        else {
+            // this might happen if the transport was silently closed in the beforeunload event handler
+            debug("transport is not open, discarding packets");
+        }
+    }
+    /**
+     * Called upon open
+     *
+     * @protected
+     */
+    onOpen() {
+        this.readyState = "open";
+        this.writable = true;
+        super.emitReserved("open");
+    }
+    /**
+     * Called with data.
+     *
+     * @param {String} data
+     * @protected
+     */
+    onData(data) {
+        const packet = decodePacket(data, this.socket.binaryType);
+        this.onPacket(packet);
+    }
+    /**
+     * Called with a decoded packet.
+     *
+     * @protected
+     */
+    onPacket(packet) {
+        super.emitReserved("packet", packet);
+    }
+    /**
+     * Called upon close.
+     *
+     * @protected
+     */
+    onClose(details) {
+        this.readyState = "closed";
+        super.emitReserved("close", details);
+    }
+    /**
+     * Pauses the transport, in order not to lose packets during an upgrade.
+     *
+     * @param onPause
+     */
+    pause(onPause) { }
+    createUri(schema, query = {}) {
+        return (schema +
+            "://" +
+            this._hostname() +
+            this._port() +
+            this.opts.path +
+            this._query(query));
+    }
+    _hostname() {
+        const hostname = this.opts.hostname;
+        return hostname.indexOf(":") === -1 ? hostname : "[" + hostname + "]";
+    }
+    _port() {
+        if (this.opts.port &&
+            ((this.opts.secure && Number(this.opts.port !== 443)) ||
+                (!this.opts.secure && Number(this.opts.port) !== 80))) {
+            return ":" + this.opts.port;
+        }
+        else {
+            return "";
+        }
+    }
+    _query(query) {
+        const encodedQuery = encode(query);
+        return encodedQuery.length ? "?" + encodedQuery : "";
+    }
+}

node_modules/engine.io-client/build/esm-debug/transports/index.d.ts

@@ -0,0 +1,8 @@
+import { XHR } from "./polling-xhr.node.js";
+import { WS } from "./websocket.node.js";
+import { WT } from "./webtransport.js";
+export declare const transports: {
+    websocket: typeof WS;
+    webtransport: typeof WT;
+    polling: typeof XHR;
+};

node_modules/engine.io-client/build/esm-debug/transports/index.js

@@ -0,0 +1,8 @@
+import { XHR } from "./polling-xhr.node.js";
+import { WS } from "./websocket.node.js";
+import { WT } from "./webtransport.js";
+export const transports = {
+    websocket: WS,
+    webtransport: WT,
+    polling: XHR,
+};

node_modules/engine.io-client/build/esm-debug/transports/polling-fetch.d.ts

@@ -0,0 +1,15 @@
+import { Polling } from "./polling.js";
+/**
+ * HTTP long-polling based on the built-in `fetch()` method.
+ *
+ * Usage: browser, Node.js (since v18), Deno, Bun
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/fetch
+ * @see https://caniuse.com/fetch
+ * @see https://nodejs.org/api/globals.html#fetch
+ */
+export declare class Fetch extends Polling {
+    doPoll(): void;
+    doWrite(data: string, callback: () => void): void;
+    private _fetch;
+}

node_modules/engine.io-client/build/esm-debug/transports/polling-fetch.js

@@ -0,0 +1,56 @@
+import { Polling } from "./polling.js";
+/**
+ * HTTP long-polling based on the built-in `fetch()` method.
+ *
+ * Usage: browser, Node.js (since v18), Deno, Bun
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/fetch
+ * @see https://caniuse.com/fetch
+ * @see https://nodejs.org/api/globals.html#fetch
+ */
+export class Fetch extends Polling {
+    doPoll() {
+        this._fetch()
+            .then((res) => {
+            if (!res.ok) {
+                return this.onError("fetch read error", res.status, res);
+            }
+            res.text().then((data) => this.onData(data));
+        })
+            .catch((err) => {
+            this.onError("fetch read error", err);
+        });
+    }
+    doWrite(data, callback) {
+        this._fetch(data)
+            .then((res) => {
+            if (!res.ok) {
+                return this.onError("fetch write error", res.status, res);
+            }
+            callback();
+        })
+            .catch((err) => {
+            this.onError("fetch write error", err);
+        });
+    }
+    _fetch(data) {
+        var _a;
+        const isPost = data !== undefined;
+        const headers = new Headers(this.opts.extraHeaders);
+        if (isPost) {
+            headers.set("content-type", "text/plain;charset=UTF-8");
+        }
+        (_a = this.socket._cookieJar) === null || _a === void 0 ? void 0 : _a.appendCookies(headers);
+        return fetch(this.uri(), {
+            method: isPost ? "POST" : "GET",
+            body: isPost ? data : null,
+            headers,
+            credentials: this.opts.withCredentials ? "include" : "omit",
+        }).then((res) => {
+            var _a;
+            // @ts-ignore getSetCookie() was added in Node.js v19.7.0
+            (_a = this.socket._cookieJar) === null || _a === void 0 ? void 0 : _a.parseCookies(res.headers.getSetCookie());
+            return res;
+        });
+    }
+}

node_modules/engine.io-client/build/esm-debug/transports/polling-xhr.d.ts

@@ -0,0 +1,108 @@
+import { Polling } from "./polling.js";
+import { Emitter } from "@socket.io/component-emitter";
+import type { SocketOptions } from "../socket.js";
+import type { CookieJar } from "../globals.node.js";
+import type { RawData } from "engine.io-parser";
+export declare abstract class BaseXHR extends Polling {
+    protected readonly xd: boolean;
+    private pollXhr;
+    /**
+     * XHR Polling constructor.
+     *
+     * @param {Object} opts
+     * @package
+     */
+    constructor(opts: any);
+    /**
+     * Creates a request.
+     *
+     * @private
+     */
+    abstract request(opts?: Record<string, any>): any;
+    /**
+     * Sends data.
+     *
+     * @param {String} data to send.
+     * @param {Function} called upon flush.
+     * @private
+     */
+    doWrite(data: any, fn: any): void;
+    /**
+     * Starts a poll cycle.
+     *
+     * @private
+     */
+    doPoll(): void;
+}
+interface RequestReservedEvents {
+    success: () => void;
+    data: (data: RawData) => void;
+    error: (err: number | Error, context: unknown) => void;
+}
+export type RequestOptions = SocketOptions & {
+    method?: string;
+    data?: RawData;
+    xd: boolean;
+    cookieJar: CookieJar;
+};
+export declare class Request extends Emitter<Record<never, never>, Record<never, never>, RequestReservedEvents> {
+    private readonly createRequest;
+    private readonly _opts;
+    private readonly _method;
+    private readonly _uri;
+    private readonly _data;
+    private _xhr;
+    private setTimeoutFn;
+    private _index;
+    static requestsCount: number;
+    static requests: {};
+    /**
+     * Request constructor
+     *
+     * @param {Object} options
+     * @package
+     */
+    constructor(createRequest: (opts: RequestOptions) => XMLHttpRequest, uri: string, opts: RequestOptions);
+    /**
+     * Creates the XHR object and sends the request.
+     *
+     * @private
+     */
+    private _create;
+    /**
+     * Called upon error.
+     *
+     * @private
+     */
+    private _onError;
+    /**
+     * Cleans up house.
+     *
+     * @private
+     */
+    private _cleanup;
+    /**
+     * Called upon load.
+     *
+     * @private
+     */
+    private _onLoad;
+    /**
+     * Aborts the request.
+     *
+     * @package
+     */
+    abort(): void;
+}
+/**
+ * HTTP long-polling based on the built-in `XMLHttpRequest` object.
+ *
+ * Usage: browser
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest
+ */
+export declare class XHR extends BaseXHR {
+    constructor(opts: any);
+    request(opts?: Record<string, any>): Request;
+}
+export {};

node_modules/engine.io-client/build/esm-debug/transports/polling-xhr.js

@@ -0,0 +1,276 @@
+import { Polling } from "./polling.js";
+import { Emitter } from "@socket.io/component-emitter";
+import { installTimerFunctions, pick } from "../util.js";
+import { globalThisShim as globalThis } from "../globals.node.js";
+import { hasCORS } from "../contrib/has-cors.js";
+import debugModule from "debug"; // debug()
+const debug = debugModule("engine.io-client:polling"); // debug()
+function empty() { }
+export class BaseXHR extends Polling {
+    /**
+     * XHR Polling constructor.
+     *
+     * @param {Object} opts
+     * @package
+     */
+    constructor(opts) {
+        super(opts);
+        if (typeof location !== "undefined") {
+            const isSSL = "https:" === location.protocol;
+            let port = location.port;
+            // some user agents have empty `location.port`
+            if (!port) {
+                port = isSSL ? "443" : "80";
+            }
+            this.xd =
+                (typeof location !== "undefined" &&
+                    opts.hostname !== location.hostname) ||
+                    port !== opts.port;
+        }
+    }
+    /**
+     * Sends data.
+     *
+     * @param {String} data to send.
+     * @param {Function} called upon flush.
+     * @private
+     */
+    doWrite(data, fn) {
+        const req = this.request({
+            method: "POST",
+            data: data,
+        });
+        req.on("success", fn);
+        req.on("error", (xhrStatus, context) => {
+            this.onError("xhr post error", xhrStatus, context);
+        });
+    }
+    /**
+     * Starts a poll cycle.
+     *
+     * @private
+     */
+    doPoll() {
+        debug("xhr poll");
+        const req = this.request();
+        req.on("data", this.onData.bind(this));
+        req.on("error", (xhrStatus, context) => {
+            this.onError("xhr poll error", xhrStatus, context);
+        });
+        this.pollXhr = req;
+    }
+}
+export class Request extends Emitter {
+    /**
+     * Request constructor
+     *
+     * @param {Object} options
+     * @package
+     */
+    constructor(createRequest, uri, opts) {
+        super();
+        this.createRequest = createRequest;
+        installTimerFunctions(this, opts);
+        this._opts = opts;
+        this._method = opts.method || "GET";
+        this._uri = uri;
+        this._data = undefined !== opts.data ? opts.data : null;
+        this._create();
+    }
+    /**
+     * Creates the XHR object and sends the request.
+     *
+     * @private
+     */
+    _create() {
+        var _a;
+        const opts = pick(this._opts, "agent", "pfx", "key", "passphrase", "cert", "ca", "ciphers", "rejectUnauthorized", "autoUnref");
+        opts.xdomain = !!this._opts.xd;
+        const xhr = (this._xhr = this.createRequest(opts));
+        try {
+            debug("xhr open %s: %s", this._method, this._uri);
+            xhr.open(this._method, this._uri, true);
+            try {
+                if (this._opts.extraHeaders) {
+                    // @ts-ignore
+                    xhr.setDisableHeaderCheck && xhr.setDisableHeaderCheck(true);
+                    for (let i in this._opts.extraHeaders) {
+                        if (this._opts.extraHeaders.hasOwnProperty(i)) {
+                            xhr.setRequestHeader(i, this._opts.extraHeaders[i]);
+                        }
+                    }
+                }
+            }
+            catch (e) { }
+            if ("POST" === this._method) {
+                try {
+                    xhr.setRequestHeader("Content-type", "text/plain;charset=UTF-8");
+                }
+                catch (e) { }
+            }
+            try {
+                xhr.setRequestHeader("Accept", "*/*");
+            }
+            catch (e) { }
+            (_a = this._opts.cookieJar) === null || _a === void 0 ? void 0 : _a.addCookies(xhr);
+            // ie6 check
+            if ("withCredentials" in xhr) {
+                xhr.withCredentials = this._opts.withCredentials;
+            }
+            if (this._opts.requestTimeout) {
+                xhr.timeout = this._opts.requestTimeout;
+            }
+            xhr.onreadystatechange = () => {
+                var _a;
+                if (xhr.readyState === 3) {
+                    (_a = this._opts.cookieJar) === null || _a === void 0 ? void 0 : _a.parseCookies(
+                    // @ts-ignore
+                    xhr.getResponseHeader("set-cookie"));
+                }
+                if (4 !== xhr.readyState)
+                    return;
+                if (200 === xhr.status || 1223 === xhr.status) {
+                    this._onLoad();
+                }
+                else {
+                    // make sure the `error` event handler that's user-set
+                    // does not throw in the same tick and gets caught here
+                    this.setTimeoutFn(() => {
+                        this._onError(typeof xhr.status === "number" ? xhr.status : 0);
+                    }, 0);
+                }
+            };
+            debug("xhr data %s", this._data);
+            xhr.send(this._data);
+        }
+        catch (e) {
+            // Need to defer since .create() is called directly from the constructor
+            // and thus the 'error' event can only be only bound *after* this exception
+            // occurs.  Therefore, also, we cannot throw here at all.
+            this.setTimeoutFn(() => {
+                this._onError(e);
+            }, 0);
+            return;
+        }
+        if (typeof document !== "undefined") {
+            this._index = Request.requestsCount++;
+            Request.requests[this._index] = this;
+        }
+    }
+    /**
+     * Called upon error.
+     *
+     * @private
+     */
+    _onError(err) {
+        this.emitReserved("error", err, this._xhr);
+        this._cleanup(true);
+    }
+    /**
+     * Cleans up house.
+     *
+     * @private
+     */
+    _cleanup(fromError) {
+        if ("undefined" === typeof this._xhr || null === this._xhr) {
+            return;
+        }
+        this._xhr.onreadystatechange = empty;
+        if (fromError) {
+            try {
+                this._xhr.abort();
+            }
+            catch (e) { }
+        }
+        if (typeof document !== "undefined") {
+            delete Request.requests[this._index];
+        }
+        this._xhr = null;
+    }
+    /**
+     * Called upon load.
+     *
+     * @private
+     */
+    _onLoad() {
+        const data = this._xhr.responseText;
+        if (data !== null) {
+            this.emitReserved("data", data);
+            this.emitReserved("success");
+            this._cleanup();
+        }
+    }
+    /**
+     * Aborts the request.
+     *
+     * @package
+     */
+    abort() {
+        this._cleanup();
+    }
+}
+Request.requestsCount = 0;
+Request.requests = {};
+/**
+ * Aborts pending requests when unloading the window. This is needed to prevent
+ * memory leaks (e.g. when using IE) and to ensure that no spurious error is
+ * emitted.
+ */
+if (typeof document !== "undefined") {
+    // @ts-ignore
+    if (typeof attachEvent === "function") {
+        // @ts-ignore
+        attachEvent("onunload", unloadHandler);
+    }
+    else if (typeof addEventListener === "function") {
+        const terminationEvent = "onpagehide" in globalThis ? "pagehide" : "unload";
+        addEventListener(terminationEvent, unloadHandler, false);
+    }
+}
+function unloadHandler() {
+    for (let i in Request.requests) {
+        if (Request.requests.hasOwnProperty(i)) {
+            Request.requests[i].abort();
+        }
+    }
+}
+const hasXHR2 = (function () {
+    const xhr = newRequest({
+        xdomain: false,
+    });
+    return xhr && xhr.responseType !== null;
+})();
+/**
+ * HTTP long-polling based on the built-in `XMLHttpRequest` object.
+ *
+ * Usage: browser
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest
+ */
+export class XHR extends BaseXHR {
+    constructor(opts) {
+        super(opts);
+        const forceBase64 = opts && opts.forceBase64;
+        this.supportsBinary = hasXHR2 && !forceBase64;
+    }
+    request(opts = {}) {
+        Object.assign(opts, { xd: this.xd }, this.opts);
+        return new Request(newRequest, this.uri(), opts);
+    }
+}
+function newRequest(opts) {
+    const xdomain = opts.xdomain;
+    // XMLHttpRequest can be disabled on IE
+    try {
+        if ("undefined" !== typeof XMLHttpRequest && (!xdomain || hasCORS)) {
+            return new XMLHttpRequest();
+        }
+    }
+    catch (e) { }
+    if (!xdomain) {
+        try {
+            return new globalThis[["Active"].concat("Object").join("X")]("Microsoft.XMLHTTP");
+        }
+        catch (e) { }
+    }
+}

node_modules/engine.io-client/build/esm-debug/transports/polling-xhr.node.d.ts

@@ -0,0 +1,11 @@
+import { BaseXHR, Request } from "./polling-xhr.js";
+/**
+ * HTTP long-polling based on the `XMLHttpRequest` object provided by the `xmlhttprequest-ssl` package.
+ *
+ * Usage: Node.js, Deno (compat), Bun (compat)
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest
+ */
+export declare class XHR extends BaseXHR {
+    request(opts?: Record<string, any>): Request;
+}

node_modules/engine.io-client/build/esm-debug/transports/polling-xhr.node.js

@@ -0,0 +1,17 @@
+import * as XMLHttpRequestModule from "xmlhttprequest-ssl";
+import { BaseXHR, Request } from "./polling-xhr.js";
+const XMLHttpRequest = XMLHttpRequestModule.default || XMLHttpRequestModule;
+/**
+ * HTTP long-polling based on the `XMLHttpRequest` object provided by the `xmlhttprequest-ssl` package.
+ *
+ * Usage: Node.js, Deno (compat), Bun (compat)
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest
+ */
+export class XHR extends BaseXHR {
+    request(opts = {}) {
+        var _a;
+        Object.assign(opts, { xd: this.xd, cookieJar: (_a = this.socket) === null || _a === void 0 ? void 0 : _a._cookieJar }, this.opts);
+        return new Request((opts) => new XMLHttpRequest(opts), this.uri(), opts);
+    }
+}

node_modules/engine.io-client/build/esm-debug/transports/polling.d.ts

@@ -0,0 +1,52 @@
+import { Transport } from "../transport.js";
+export declare abstract class Polling extends Transport {
+    private _polling;
+    get name(): string;
+    /**
+     * Opens the socket (triggers polling). We write a PING message to determine
+     * when the transport is open.
+     *
+     * @protected
+     */
+    doOpen(): void;
+    /**
+     * Pauses polling.
+     *
+     * @param {Function} onPause - callback upon buffers are flushed and transport is paused
+     * @package
+     */
+    pause(onPause: any): void;
+    /**
+     * Starts polling cycle.
+     *
+     * @private
+     */
+    private _poll;
+    /**
+     * Overloads onData to detect payloads.
+     *
+     * @protected
+     */
+    onData(data: any): void;
+    /**
+     * For polling, send a close packet.
+     *
+     * @protected
+     */
+    doClose(): void;
+    /**
+     * Writes a packets payload.
+     *
+     * @param {Array} packets - data packets
+     * @protected
+     */
+    write(packets: any): void;
+    /**
+     * Generates uri for connection.
+     *
+     * @private
+     */
+    protected uri(): string;
+    abstract doPoll(): any;
+    abstract doWrite(data: string, callback: () => void): any;
+}

node_modules/engine.io-client/build/esm-debug/transports/polling.js

@@ -0,0 +1,158 @@
+import { Transport } from "../transport.js";
+import { randomString } from "../util.js";
+import { encodePayload, decodePayload } from "engine.io-parser";
+import debugModule from "debug"; // debug()
+const debug = debugModule("engine.io-client:polling"); // debug()
+export class Polling extends Transport {
+    constructor() {
+        super(...arguments);
+        this._polling = false;
+    }
+    get name() {
+        return "polling";
+    }
+    /**
+     * Opens the socket (triggers polling). We write a PING message to determine
+     * when the transport is open.
+     *
+     * @protected
+     */
+    doOpen() {
+        this._poll();
+    }
+    /**
+     * Pauses polling.
+     *
+     * @param {Function} onPause - callback upon buffers are flushed and transport is paused
+     * @package
+     */
+    pause(onPause) {
+        this.readyState = "pausing";
+        const pause = () => {
+            debug("paused");
+            this.readyState = "paused";
+            onPause();
+        };
+        if (this._polling || !this.writable) {
+            let total = 0;
+            if (this._polling) {
+                debug("we are currently polling - waiting to pause");
+                total++;
+                this.once("pollComplete", function () {
+                    debug("pre-pause polling complete");
+                    --total || pause();
+                });
+            }
+            if (!this.writable) {
+                debug("we are currently writing - waiting to pause");
+                total++;
+                this.once("drain", function () {
+                    debug("pre-pause writing complete");
+                    --total || pause();
+                });
+            }
+        }
+        else {
+            pause();
+        }
+    }
+    /**
+     * Starts polling cycle.
+     *
+     * @private
+     */
+    _poll() {
+        debug("polling");
+        this._polling = true;
+        this.doPoll();
+        this.emitReserved("poll");
+    }
+    /**
+     * Overloads onData to detect payloads.
+     *
+     * @protected
+     */
+    onData(data) {
+        debug("polling got data %s", data);
+        const callback = (packet) => {
+            // if its the first message we consider the transport open
+            if ("opening" === this.readyState && packet.type === "open") {
+                this.onOpen();
+            }
+            // if its a close packet, we close the ongoing requests
+            if ("close" === packet.type) {
+                this.onClose({ description: "transport closed by the server" });
+                return false;
+            }
+            // otherwise bypass onData and handle the message
+            this.onPacket(packet);
+        };
+        // decode payload
+        decodePayload(data, this.socket.binaryType).forEach(callback);
+        // if an event did not trigger closing
+        if ("closed" !== this.readyState) {
+            // if we got data we're not polling
+            this._polling = false;
+            this.emitReserved("pollComplete");
+            if ("open" === this.readyState) {
+                this._poll();
+            }
+            else {
+                debug('ignoring poll - transport state "%s"', this.readyState);
+            }
+        }
+    }
+    /**
+     * For polling, send a close packet.
+     *
+     * @protected
+     */
+    doClose() {
+        const close = () => {
+            debug("writing close packet");
+            this.write([{ type: "close" }]);
+        };
+        if ("open" === this.readyState) {
+            debug("transport open - closing");
+            close();
+        }
+        else {
+            // in case we're trying to close while
+            // handshaking is in progress (GH-164)
+            debug("transport not open - deferring close");
+            this.once("open", close);
+        }
+    }
+    /**
+     * Writes a packets payload.
+     *
+     * @param {Array} packets - data packets
+     * @protected
+     */
+    write(packets) {
+        this.writable = false;
+        encodePayload(packets, (data) => {
+            this.doWrite(data, () => {
+                this.writable = true;
+                this.emitReserved("drain");
+            });
+        });
+    }
+    /**
+     * Generates uri for connection.
+     *
+     * @private
+     */
+    uri() {
+        const schema = this.opts.secure ? "https" : "http";
+        const query = this.query || {};
+        // cache busting is forced
+        if (false !== this.opts.timestampRequests) {
+            query[this.opts.timestampParam] = randomString();
+        }
+        if (!this.supportsBinary && !query.sid) {
+            query.b64 = 1;
+        }
+        return this.createUri(schema, query);
+    }
+}

node_modules/engine.io-client/build/esm-debug/transports/websocket.d.ts

@@ -0,0 +1,36 @@
+import { Transport } from "../transport.js";
+import type { Packet, RawData } from "engine.io-parser";
+export declare abstract class BaseWS extends Transport {
+    protected ws: any;
+    get name(): string;
+    doOpen(): this;
+    abstract createSocket(uri: string, protocols: string | string[] | undefined, opts: Record<string, any>): any;
+    /**
+     * Adds event listeners to the socket
+     *
+     * @private
+     */
+    private addEventListeners;
+    write(packets: any): void;
+    abstract doWrite(packet: Packet, data: RawData): any;
+    doClose(): void;
+    /**
+     * Generates uri for connection.
+     *
+     * @private
+     */
+    private uri;
+}
+/**
+ * WebSocket transport based on the built-in `WebSocket` object.
+ *
+ * Usage: browser, Node.js (since v21), Deno, Bun
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/WebSocket
+ * @see https://caniuse.com/mdn-api_websocket
+ * @see https://nodejs.org/api/globals.html#websocket
+ */
+export declare class WS extends BaseWS {
+    createSocket(uri: string, protocols: string | string[] | undefined, opts: Record<string, any>): any;
+    doWrite(_packet: Packet, data: RawData): void;
+}

node_modules/engine.io-client/build/esm-debug/transports/websocket.js

@@ -0,0 +1,128 @@
+import { Transport } from "../transport.js";
+import { pick, randomString } from "../util.js";
+import { encodePacket } from "engine.io-parser";
+import { globalThisShim as globalThis, nextTick } from "../globals.node.js";
+import debugModule from "debug"; // debug()
+const debug = debugModule("engine.io-client:websocket"); // debug()
+// detect ReactNative environment
+const isReactNative = typeof navigator !== "undefined" &&
+    typeof navigator.product === "string" &&
+    navigator.product.toLowerCase() === "reactnative";
+export class BaseWS extends Transport {
+    get name() {
+        return "websocket";
+    }
+    doOpen() {
+        const uri = this.uri();
+        const protocols = this.opts.protocols;
+        // React Native only supports the 'headers' option, and will print a warning if anything else is passed
+        const opts = isReactNative
+            ? {}
+            : pick(this.opts, "agent", "perMessageDeflate", "pfx", "key", "passphrase", "cert", "ca", "ciphers", "rejectUnauthorized", "localAddress", "protocolVersion", "origin", "maxPayload", "family", "checkServerIdentity");
+        if (this.opts.extraHeaders) {
+            opts.headers = this.opts.extraHeaders;
+        }
+        try {
+            this.ws = this.createSocket(uri, protocols, opts);
+        }
+        catch (err) {
+            return this.emitReserved("error", err);
+        }
+        this.ws.binaryType = this.socket.binaryType;
+        this.addEventListeners();
+    }
+    /**
+     * Adds event listeners to the socket
+     *
+     * @private
+     */
+    addEventListeners() {
+        this.ws.onopen = () => {
+            if (this.opts.autoUnref) {
+                this.ws._socket.unref();
+            }
+            this.onOpen();
+        };
+        this.ws.onclose = (closeEvent) => this.onClose({
+            description: "websocket connection closed",
+            context: closeEvent,
+        });
+        this.ws.onmessage = (ev) => this.onData(ev.data);
+        this.ws.onerror = (e) => this.onError("websocket error", e);
+    }
+    write(packets) {
+        this.writable = false;
+        // encodePacket efficient as it uses WS framing
+        // no need for encodePayload
+        for (let i = 0; i < packets.length; i++) {
+            const packet = packets[i];
+            const lastPacket = i === packets.length - 1;
+            encodePacket(packet, this.supportsBinary, (data) => {
+                // Sometimes the websocket has already been closed but the browser didn't
+                // have a chance of informing us about it yet, in that case send will
+                // throw an error
+                try {
+                    this.doWrite(packet, data);
+                }
+                catch (e) {
+                    debug("websocket closed before onclose event");
+                }
+                if (lastPacket) {
+                    // fake drain
+                    // defer to next tick to allow Socket to clear writeBuffer
+                    nextTick(() => {
+                        this.writable = true;
+                        this.emitReserved("drain");
+                    }, this.setTimeoutFn);
+                }
+            });
+        }
+    }
+    doClose() {
+        if (typeof this.ws !== "undefined") {
+            this.ws.onerror = () => { };
+            this.ws.close();
+            this.ws = null;
+        }
+    }
+    /**
+     * Generates uri for connection.
+     *
+     * @private
+     */
+    uri() {
+        const schema = this.opts.secure ? "wss" : "ws";
+        const query = this.query || {};
+        // append timestamp to URI
+        if (this.opts.timestampRequests) {
+            query[this.opts.timestampParam] = randomString();
+        }
+        // communicate binary support capabilities
+        if (!this.supportsBinary) {
+            query.b64 = 1;
+        }
+        return this.createUri(schema, query);
+    }
+}
+const WebSocketCtor = globalThis.WebSocket || globalThis.MozWebSocket;
+/**
+ * WebSocket transport based on the built-in `WebSocket` object.
+ *
+ * Usage: browser, Node.js (since v21), Deno, Bun
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/WebSocket
+ * @see https://caniuse.com/mdn-api_websocket
+ * @see https://nodejs.org/api/globals.html#websocket
+ */
+export class WS extends BaseWS {
+    createSocket(uri, protocols, opts) {
+        return !isReactNative
+            ? protocols
+                ? new WebSocketCtor(uri, protocols)
+                : new WebSocketCtor(uri)
+            : new WebSocketCtor(uri, protocols, opts);
+    }
+    doWrite(_packet, data) {
+        this.ws.send(data);
+    }
+}

node_modules/engine.io-client/build/esm-debug/transports/websocket.node.d.ts

@@ -0,0 +1,14 @@
+import type { Packet, RawData } from "engine.io-parser";
+import { BaseWS } from "./websocket.js";
+/**
+ * WebSocket transport based on the `WebSocket` object provided by the `ws` package.
+ *
+ * Usage: Node.js, Deno (compat), Bun (compat)
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/WebSocket
+ * @see https://caniuse.com/mdn-api_websocket
+ */
+export declare class WS extends BaseWS {
+    createSocket(uri: string, protocols: string | string[] | undefined, opts: Record<string, any>): any;
+    doWrite(packet: Packet, data: RawData): void;
+}

node_modules/engine.io-client/build/esm-debug/transports/websocket.node.js

@@ -0,0 +1,41 @@
+import { WebSocket } from "ws";
+import { BaseWS } from "./websocket.js";
+/**
+ * WebSocket transport based on the `WebSocket` object provided by the `ws` package.
+ *
+ * Usage: Node.js, Deno (compat), Bun (compat)
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/WebSocket
+ * @see https://caniuse.com/mdn-api_websocket
+ */
+export class WS extends BaseWS {
+    createSocket(uri, protocols, opts) {
+        var _a;
+        if ((_a = this.socket) === null || _a === void 0 ? void 0 : _a._cookieJar) {
+            opts.headers = opts.headers || {};
+            opts.headers.cookie =
+                typeof opts.headers.cookie === "string"
+                    ? [opts.headers.cookie]
+                    : opts.headers.cookie || [];
+            for (const [name, cookie] of this.socket._cookieJar.cookies) {
+                opts.headers.cookie.push(`${name}=${cookie.value}`);
+            }
+        }
+        return new WebSocket(uri, protocols, opts);
+    }
+    doWrite(packet, data) {
+        const opts = {};
+        if (packet.options) {
+            opts.compress = packet.options.compress;
+        }
+        if (this.opts.perMessageDeflate) {
+            const len = 
+            // @ts-ignore
+            "string" === typeof data ? Buffer.byteLength(data) : data.length;
+            if (len < this.opts.perMessageDeflate.threshold) {
+                opts.compress = false;
+            }
+        }
+        this.ws.send(data, opts);
+    }
+}

node_modules/engine.io-client/build/esm-debug/transports/webtransport.d.ts

@@ -0,0 +1,18 @@
+import { Transport } from "../transport.js";
+import { Packet } from "engine.io-parser";
+/**
+ * WebTransport transport based on the built-in `WebTransport` object.
+ *
+ * Usage: browser, Node.js (with the `@fails-components/webtransport` package)
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/WebTransport
+ * @see https://caniuse.com/webtransport
+ */
+export declare class WT extends Transport {
+    private _transport;
+    private _writer;
+    get name(): string;
+    protected doOpen(): this;
+    protected write(packets: Packet[]): void;
+    protected doClose(): void;
+}

node_modules/engine.io-client/build/esm-debug/transports/webtransport.js

@@ -0,0 +1,87 @@
+import { Transport } from "../transport.js";
+import { nextTick } from "../globals.node.js";
+import { createPacketDecoderStream, createPacketEncoderStream, } from "engine.io-parser";
+import debugModule from "debug"; // debug()
+const debug = debugModule("engine.io-client:webtransport"); // debug()
+/**
+ * WebTransport transport based on the built-in `WebTransport` object.
+ *
+ * Usage: browser, Node.js (with the `@fails-components/webtransport` package)
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/WebTransport
+ * @see https://caniuse.com/webtransport
+ */
+export class WT extends Transport {
+    get name() {
+        return "webtransport";
+    }
+    doOpen() {
+        try {
+            // @ts-ignore
+            this._transport = new WebTransport(this.createUri("https"), this.opts.transportOptions[this.name]);
+        }
+        catch (err) {
+            return this.emitReserved("error", err);
+        }
+        this._transport.closed
+            .then(() => {
+            debug("transport closed gracefully");
+            this.onClose();
+        })
+            .catch((err) => {
+            debug("transport closed due to %s", err);
+            this.onError("webtransport error", err);
+        });
+        // note: we could have used async/await, but that would require some additional polyfills
+        this._transport.ready.then(() => {
+            this._transport.createBidirectionalStream().then((stream) => {
+                const decoderStream = createPacketDecoderStream(Number.MAX_SAFE_INTEGER, this.socket.binaryType);
+                const reader = stream.readable.pipeThrough(decoderStream).getReader();
+                const encoderStream = createPacketEncoderStream();
+                encoderStream.readable.pipeTo(stream.writable);
+                this._writer = encoderStream.writable.getWriter();
+                const read = () => {
+                    reader
+                        .read()
+                        .then(({ done, value }) => {
+                        if (done) {
+                            debug("session is closed");
+                            return;
+                        }
+                        debug("received chunk: %o", value);
+                        this.onPacket(value);
+                        read();
+                    })
+                        .catch((err) => {
+                        debug("an error occurred while reading: %s", err);
+                    });
+                };
+                read();
+                const packet = { type: "open" };
+                if (this.query.sid) {
+                    packet.data = `{"sid":"${this.query.sid}"}`;
+                }
+                this._writer.write(packet).then(() => this.onOpen());
+            });
+        });
+    }
+    write(packets) {
+        this.writable = false;
+        for (let i = 0; i < packets.length; i++) {
+            const packet = packets[i];
+            const lastPacket = i === packets.length - 1;
+            this._writer.write(packet).then(() => {
+                if (lastPacket) {
+                    nextTick(() => {
+                        this.writable = true;
+                        this.emitReserved("drain");
+                    }, this.setTimeoutFn);
+                }
+            });
+        }
+    }
+    doClose() {
+        var _a;
+        (_a = this._transport) === null || _a === void 0 ? void 0 : _a.close();
+    }
+}

node_modules/engine.io-client/build/esm-debug/util.d.ts

@@ -0,0 +1,7 @@
+export declare function pick(obj: any, ...attr: any[]): any;
+export declare function installTimerFunctions(obj: any, opts: any): void;
+export declare function byteLength(obj: any): number;
+/**
+ * Generates a random 8-characters string.
+ */
+export declare function randomString(): string;

node_modules/engine.io-client/build/esm-debug/util.js

@@ -0,0 +1,59 @@
+import { globalThisShim as globalThis } from "./globals.node.js";
+export function pick(obj, ...attr) {
+    return attr.reduce((acc, k) => {
+        if (obj.hasOwnProperty(k)) {
+            acc[k] = obj[k];
+        }
+        return acc;
+    }, {});
+}
+// Keep a reference to the real timeout functions so they can be used when overridden
+const NATIVE_SET_TIMEOUT = globalThis.setTimeout;
+const NATIVE_CLEAR_TIMEOUT = globalThis.clearTimeout;
+export function installTimerFunctions(obj, opts) {
+    if (opts.useNativeTimers) {
+        obj.setTimeoutFn = NATIVE_SET_TIMEOUT.bind(globalThis);
+        obj.clearTimeoutFn = NATIVE_CLEAR_TIMEOUT.bind(globalThis);
+    }
+    else {
+        obj.setTimeoutFn = globalThis.setTimeout.bind(globalThis);
+        obj.clearTimeoutFn = globalThis.clearTimeout.bind(globalThis);
+    }
+}
+// base64 encoded buffers are about 33% bigger (https://en.wikipedia.org/wiki/Base64)
+const BASE64_OVERHEAD = 1.33;
+// we could also have used `new Blob([obj]).size`, but it isn't supported in IE9
+export function byteLength(obj) {
+    if (typeof obj === "string") {
+        return utf8Length(obj);
+    }
+    // arraybuffer or blob
+    return Math.ceil((obj.byteLength || obj.size) * BASE64_OVERHEAD);
+}
+function utf8Length(str) {
+    let c = 0, length = 0;
+    for (let i = 0, l = str.length; i < l; i++) {
+        c = str.charCodeAt(i);
+        if (c < 0x80) {
+            length += 1;
+        }
+        else if (c < 0x800) {
+            length += 2;
+        }
+        else if (c < 0xd800 || c >= 0xe000) {
+            length += 3;
+        }
+        else {
+            i++;
+            length += 4;
+        }
+    }
+    return length;
+}
+/**
+ * Generates a random 8-characters string.
+ */
+export function randomString() {
+    return (Date.now().toString(36).substring(3) +
+        Math.random().toString(36).substring(2, 5));
+}

node_modules/engine.io-client/build/esm/browser-entrypoint.d.ts

@@ -0,0 +1,3 @@
+import { Socket } from "./socket.js";
+declare const _default: (uri: any, opts: any) => Socket;
+export default _default;

node_modules/engine.io-client/build/esm/browser-entrypoint.js

@@ -0,0 +1,2 @@
+import { Socket } from "./socket.js";
+export default (uri, opts) => new Socket(uri, opts);

node_modules/engine.io-client/build/esm/contrib/has-cors.d.ts

@@ -0,0 +1 @@
+export declare const hasCORS: boolean;

node_modules/engine.io-client/build/esm/contrib/has-cors.js

@@ -0,0 +1,11 @@
+// imported from https://github.com/component/has-cors
+let value = false;
+try {
+    value = typeof XMLHttpRequest !== 'undefined' &&
+        'withCredentials' in new XMLHttpRequest();
+}
+catch (err) {
+    // if XMLHttp support is disabled in IE then it will throw
+    // when trying to create
+}
+export const hasCORS = value;

node_modules/engine.io-client/build/esm/contrib/parseqs.d.ts

@@ -0,0 +1,15 @@
+/**
+ * Compiles a querystring
+ * Returns string representation of the object
+ *
+ * @param {Object}
+ * @api private
+ */
+export declare function encode(obj: any): string;
+/**
+ * Parses a simple querystring into an object
+ *
+ * @param {String} qs
+ * @api private
+ */
+export declare function decode(qs: any): {};

node_modules/engine.io-client/build/esm/contrib/parseqs.js

@@ -0,0 +1,34 @@
+// imported from https://github.com/galkn/querystring
+/**
+ * Compiles a querystring
+ * Returns string representation of the object
+ *
+ * @param {Object}
+ * @api private
+ */
+export function encode(obj) {
+    let str = '';
+    for (let i in obj) {
+        if (obj.hasOwnProperty(i)) {
+            if (str.length)
+                str += '&';
+            str += encodeURIComponent(i) + '=' + encodeURIComponent(obj[i]);
+        }
+    }
+    return str;
+}
+/**
+ * Parses a simple querystring into an object
+ *
+ * @param {String} qs
+ * @api private
+ */
+export function decode(qs) {
+    let qry = {};
+    let pairs = qs.split('&');
+    for (let i = 0, l = pairs.length; i < l; i++) {
+        let pair = pairs[i].split('=');
+        qry[decodeURIComponent(pair[0])] = decodeURIComponent(pair[1]);
+    }
+    return qry;
+}

node_modules/engine.io-client/build/esm/contrib/parseuri.d.ts

@@ -0,0 +1 @@
+export declare function parse(str: string): any;

node_modules/engine.io-client/build/esm/contrib/parseuri.js

@@ -0,0 +1,64 @@
+// imported from https://github.com/galkn/parseuri
+/**
+ * Parses a URI
+ *
+ * Note: we could also have used the built-in URL object, but it isn't supported on all platforms.
+ *
+ * See:
+ * - https://developer.mozilla.org/en-US/docs/Web/API/URL
+ * - https://caniuse.com/url
+ * - https://www.rfc-editor.org/rfc/rfc3986#appendix-B
+ *
+ * History of the parse() method:
+ * - first commit: https://github.com/socketio/socket.io-client/commit/4ee1d5d94b3906a9c052b459f1a818b15f38f91c
+ * - export into its own module: https://github.com/socketio/engine.io-client/commit/de2c561e4564efeb78f1bdb1ba39ef81b2822cb3
+ * - reimport: https://github.com/socketio/engine.io-client/commit/df32277c3f6d622eec5ed09f493cae3f3391d242
+ *
+ * @author Steven Levithan <stevenlevithan.com> (MIT license)
+ * @api private
+ */
+const re = /^(?:(?![^:@\/?#]+:[^:@\/]*@)(http|https|ws|wss):\/\/)?((?:(([^:@\/?#]*)(?::([^:@\/?#]*))?)?@)?((?:[a-f0-9]{0,4}:){2,7}[a-f0-9]{0,4}|[^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/;
+const parts = [
+    'source', 'protocol', 'authority', 'userInfo', 'user', 'password', 'host', 'port', 'relative', 'path', 'directory', 'file', 'query', 'anchor'
+];
+export function parse(str) {
+    if (str.length > 8000) {
+        throw "URI too long";
+    }
+    const src = str, b = str.indexOf('['), e = str.indexOf(']');
+    if (b != -1 && e != -1) {
+        str = str.substring(0, b) + str.substring(b, e).replace(/:/g, ';') + str.substring(e, str.length);
+    }
+    let m = re.exec(str || ''), uri = {}, i = 14;
+    while (i--) {
+        uri[parts[i]] = m[i] || '';
+    }
+    if (b != -1 && e != -1) {
+        uri.source = src;
+        uri.host = uri.host.substring(1, uri.host.length - 1).replace(/;/g, ':');
+        uri.authority = uri.authority.replace('[', '').replace(']', '').replace(/;/g, ':');
+        uri.ipv6uri = true;
+    }
+    uri.pathNames = pathNames(uri, uri['path']);
+    uri.queryKey = queryKey(uri, uri['query']);
+    return uri;
+}
+function pathNames(obj, path) {
+    const regx = /\/{2,9}/g, names = path.replace(regx, "/").split("/");
+    if (path.slice(0, 1) == '/' || path.length === 0) {
+        names.splice(0, 1);
+    }
+    if (path.slice(-1) == '/') {
+        names.splice(names.length - 1, 1);
+    }
+    return names;
+}
+function queryKey(uri, query) {
+    const data = {};
+    query.replace(/(?:^|&)([^&=]*)=?([^&]*)/g, function ($0, $1, $2) {
+        if ($1) {
+            data[$1] = $2;
+        }
+    });
+    return data;
+}

node_modules/engine.io-client/build/esm/globals.d.ts

@@ -0,0 +1,4 @@
+export declare const nextTick: (cb: any, setTimeoutFn: any) => any;
+export declare const globalThisShim: any;
+export declare const defaultBinaryType = "arraybuffer";
+export declare function createCookieJar(): void;

node_modules/engine.io-client/build/esm/globals.js

@@ -0,0 +1,22 @@
+export const nextTick = (() => {
+    const isPromiseAvailable = typeof Promise === "function" && typeof Promise.resolve === "function";
+    if (isPromiseAvailable) {
+        return (cb) => Promise.resolve().then(cb);
+    }
+    else {
+        return (cb, setTimeoutFn) => setTimeoutFn(cb, 0);
+    }
+})();
+export const globalThisShim = (() => {
+    if (typeof self !== "undefined") {
+        return self;
+    }
+    else if (typeof window !== "undefined") {
+        return window;
+    }
+    else {
+        return Function("return this")();
+    }
+})();
+export const defaultBinaryType = "arraybuffer";
+export function createCookieJar() { }

node_modules/engine.io-client/build/esm/globals.node.d.ts

@@ -0,0 +1,21 @@
+export declare const nextTick: (callback: Function, ...args: any[]) => void;
+export declare const globalThisShim: typeof globalThis;
+export declare const defaultBinaryType = "nodebuffer";
+export declare function createCookieJar(): CookieJar;
+interface Cookie {
+    name: string;
+    value: string;
+    expires?: Date;
+}
+/**
+ * @see https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Set-Cookie
+ */
+export declare function parse(setCookieString: string): Cookie;
+export declare class CookieJar {
+    private _cookies;
+    parseCookies(values: string[]): void;
+    get cookies(): IterableIterator<[string, Cookie]>;
+    addCookies(xhr: any): void;
+    appendCookies(headers: Headers): void;
+}
+export {};

node_modules/engine.io-client/build/esm/globals.node.js

@@ -0,0 +1,91 @@
+export const nextTick = process.nextTick;
+export const globalThisShim = global;
+export const defaultBinaryType = "nodebuffer";
+export function createCookieJar() {
+    return new CookieJar();
+}
+/**
+ * @see https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Set-Cookie
+ */
+export function parse(setCookieString) {
+    const parts = setCookieString.split("; ");
+    const i = parts[0].indexOf("=");
+    if (i === -1) {
+        return;
+    }
+    const name = parts[0].substring(0, i).trim();
+    if (!name.length) {
+        return;
+    }
+    let value = parts[0].substring(i + 1).trim();
+    if (value.charCodeAt(0) === 0x22) {
+        // remove double quotes
+        value = value.slice(1, -1);
+    }
+    const cookie = {
+        name,
+        value,
+    };
+    for (let j = 1; j < parts.length; j++) {
+        const subParts = parts[j].split("=");
+        if (subParts.length !== 2) {
+            continue;
+        }
+        const key = subParts[0].trim();
+        const value = subParts[1].trim();
+        switch (key) {
+            case "Expires":
+                cookie.expires = new Date(value);
+                break;
+            case "Max-Age":
+                const expiration = new Date();
+                expiration.setUTCSeconds(expiration.getUTCSeconds() + parseInt(value, 10));
+                cookie.expires = expiration;
+                break;
+            default:
+            // ignore other keys
+        }
+    }
+    return cookie;
+}
+export class CookieJar {
+    constructor() {
+        this._cookies = new Map();
+    }
+    parseCookies(values) {
+        if (!values) {
+            return;
+        }
+        values.forEach((value) => {
+            const parsed = parse(value);
+            if (parsed) {
+                this._cookies.set(parsed.name, parsed);
+            }
+        });
+    }
+    get cookies() {
+        const now = Date.now();
+        this._cookies.forEach((cookie, name) => {
+            var _a;
+            if (((_a = cookie.expires) === null || _a === void 0 ? void 0 : _a.getTime()) < now) {
+                this._cookies.delete(name);
+            }
+        });
+        return this._cookies.entries();
+    }
+    addCookies(xhr) {
+        const cookies = [];
+        for (const [name, cookie] of this.cookies) {
+            cookies.push(`${name}=${cookie.value}`);
+        }
+        if (cookies.length) {
+            xhr.setDisableHeaderCheck(true);
+            xhr.setRequestHeader("cookie", cookies.join("; "));
+        }
+    }
+    appendCookies(headers) {
+        for (const [name, cookie] of this.cookies) {
+            headers.append("cookie", `${name}=${cookie.value}`);
+        }
+    }
+}

node_modules/engine.io-client/build/esm/index.d.ts

@@ -0,0 +1,15 @@
+import { Socket } from "./socket.js";
+export { Socket };
+export { SocketOptions, SocketWithoutUpgrade, SocketWithUpgrade, } from "./socket.js";
+export declare const protocol: number;
+export { Transport, TransportError } from "./transport.js";
+export { transports } from "./transports/index.js";
+export { installTimerFunctions } from "./util.js";
+export { parse } from "./contrib/parseuri.js";
+export { nextTick } from "./globals.node.js";
+export { Fetch } from "./transports/polling-fetch.js";
+export { XHR as NodeXHR } from "./transports/polling-xhr.node.js";
+export { XHR } from "./transports/polling-xhr.js";
+export { WS as NodeWebSocket } from "./transports/websocket.node.js";
+export { WS as WebSocket } from "./transports/websocket.js";
+export { WT as WebTransport } from "./transports/webtransport.js";

node_modules/engine.io-client/build/esm/index.js

@@ -0,0 +1,15 @@
+import { Socket } from "./socket.js";
+export { Socket };
+export { SocketWithoutUpgrade, SocketWithUpgrade, } from "./socket.js";
+export const protocol = Socket.protocol;
+export { Transport, TransportError } from "./transport.js";
+export { transports } from "./transports/index.js";
+export { installTimerFunctions } from "./util.js";
+export { parse } from "./contrib/parseuri.js";
+export { nextTick } from "./globals.node.js";
+export { Fetch } from "./transports/polling-fetch.js";
+export { XHR as NodeXHR } from "./transports/polling-xhr.node.js";
+export { XHR } from "./transports/polling-xhr.js";
+export { WS as NodeWebSocket } from "./transports/websocket.node.js";
+export { WS as WebSocket } from "./transports/websocket.js";
+export { WT as WebTransport } from "./transports/webtransport.js";

node_modules/engine.io-client/build/esm/package.json

@@ -0,0 +1,10 @@
+{
+  "name": "engine.io-client",
+  "type": "module",
+  "browser": {
+    "ws": false,
+    "./transports/polling-xhr.node.js": "./transports/polling-xhr.js",
+    "./transports/websocket.node.js": "./transports/websocket.js",
+    "./globals.node.js": "./globals.js"
+  }
+}

node_modules/engine.io-client/build/esm/socket.d.ts

@@ -0,0 +1,482 @@
+import { Emitter } from "@socket.io/component-emitter";
+import type { Packet, BinaryType, RawData } from "engine.io-parser";
+import { CloseDetails, Transport } from "./transport.js";
+import { CookieJar } from "./globals.node.js";
+export interface SocketOptions {
+    /**
+     * The host that we're connecting to. Set from the URI passed when connecting
+     */
+    host?: string;
+    /**
+     * The hostname for our connection. Set from the URI passed when connecting
+     */
+    hostname?: string;
+    /**
+     * If this is a secure connection. Set from the URI passed when connecting
+     */
+    secure?: boolean;
+    /**
+     * The port for our connection. Set from the URI passed when connecting
+     */
+    port?: string | number;
+    /**
+     * Any query parameters in our uri. Set from the URI passed when connecting
+     */
+    query?: {
+        [key: string]: any;
+    };
+    /**
+     * `http.Agent` to use, defaults to `false` (NodeJS only)
+     *
+     * Note: the type should be "undefined | http.Agent | https.Agent | false", but this would break browser-only clients.
+     *
+     * @see https://nodejs.org/api/http.html#httprequestoptions-callback
+     */
+    agent?: string | boolean;
+    /**
+     * Whether the client should try to upgrade the transport from
+     * long-polling to something better.
+     * @default true
+     */
+    upgrade?: boolean;
+    /**
+     * Forces base 64 encoding for polling transport even when XHR2
+     * responseType is available and WebSocket even if the used standard
+     * supports binary.
+     */
+    forceBase64?: boolean;
+    /**
+     * The param name to use as our timestamp key
+     * @default 't'
+     */
+    timestampParam?: string;
+    /**
+     * Whether to add the timestamp with each transport request. Note: this
+     * is ignored if the browser is IE or Android, in which case requests
+     * are always stamped
+     * @default false
+     */
+    timestampRequests?: boolean;
+    /**
+     * A list of transports to try (in order). Engine.io always attempts to
+     * connect directly with the first one, provided the feature detection test
+     * for it passes.
+     *
+     * @default ['polling','websocket', 'webtransport']
+     */
+    transports?: ("polling" | "websocket" | "webtransport" | string)[] | TransportCtor[];
+    /**
+     * Whether all the transports should be tested, instead of just the first one.
+     *
+     * If set to `true`, the client will first try to connect with HTTP long-polling, and then with WebSocket in case of
+     * failure, and finally with WebTransport if the previous attempts have failed.
+     *
+     * If set to `false` (default), if the connection with HTTP long-polling fails, then the client will not test the
+     * other transports and will abort the connection.
+     *
+     * @default false
+     */
+    tryAllTransports?: boolean;
+    /**
+     * If true and if the previous websocket connection to the server succeeded,
+     * the connection attempt will bypass the normal upgrade process and will
+     * initially try websocket. A connection attempt following a transport error
+     * will use the normal upgrade process. It is recommended you turn this on
+     * only when using SSL/TLS connections, or if you know that your network does
+     * not block websockets.
+     * @default false
+     */
+    rememberUpgrade?: boolean;
+    /**
+     * Timeout for xhr-polling requests in milliseconds (0) (only for polling transport)
+     */
+    requestTimeout?: number;
+    /**
+     * Transport options for Node.js client (headers etc)
+     */
+    transportOptions?: Object;
+    /**
+     * (SSL) Certificate, Private key and CA certificates to use for SSL.
+     * Can be used in Node.js client environment to manually specify
+     * certificate information.
+     */
+    pfx?: string;
+    /**
+     * (SSL) Private key to use for SSL. Can be used in Node.js client
+     * environment to manually specify certificate information.
+     */
+    key?: string;
+    /**
+     * (SSL) A string or passphrase for the private key or pfx. Can be
+     * used in Node.js client environment to manually specify certificate
+     * information.
+     */
+    passphrase?: string;
+    /**
+     * (SSL) Public x509 certificate to use. Can be used in Node.js client
+     * environment to manually specify certificate information.
+     */
+    cert?: string;
+    /**
+     * (SSL) An authority certificate or array of authority certificates to
+     * check the remote host against.. Can be used in Node.js client
+     * environment to manually specify certificate information.
+     */
+    ca?: string | string[];
+    /**
+     * (SSL) A string describing the ciphers to use or exclude. Consult the
+     * [cipher format list]
+     * (http://www.openssl.org/docs/apps/ciphers.html#CIPHER_LIST_FORMAT) for
+     * details on the format.. Can be used in Node.js client environment to
+     * manually specify certificate information.
+     */
+    ciphers?: string;
+    /**
+     * (SSL) If true, the server certificate is verified against the list of
+     * supplied CAs. An 'error' event is emitted if verification fails.
+     * Verification happens at the connection level, before the HTTP request
+     * is sent. Can be used in Node.js client environment to manually specify
+     * certificate information.
+     */
+    rejectUnauthorized?: boolean;
+    /**
+     * Headers that will be passed for each request to the server (via xhr-polling and via websockets).
+     * These values then can be used during handshake or for special proxies.
+     */
+    extraHeaders?: {
+        [header: string]: string;
+    };
+    /**
+     * Whether to include credentials (cookies, authorization headers, TLS
+     * client certificates, etc.) with cross-origin XHR polling requests
+     * @default false
+     */
+    withCredentials?: boolean;
+    /**
+     * Whether to automatically close the connection whenever the beforeunload event is received.
+     * @default false
+     */
+    closeOnBeforeunload?: boolean;
+    /**
+     * Whether to always use the native timeouts. This allows the client to
+     * reconnect when the native timeout functions are overridden, such as when
+     * mock clocks are installed.
+     * @default false
+     */
+    useNativeTimers?: boolean;
+    /**
+     * Whether the heartbeat timer should be unref'ed, in order not to keep the Node.js event loop active.
+     *
+     * @see https://nodejs.org/api/timers.html#timeoutunref
+     * @default false
+     */
+    autoUnref?: boolean;
+    /**
+     * parameters of the WebSocket permessage-deflate extension (see ws module api docs). Set to false to disable.
+     * @default false
+     */
+    perMessageDeflate?: {
+        threshold: number;
+    };
+    /**
+     * The path to get our client file from, in the case of the server
+     * serving it
+     * @default '/engine.io'
+     */
+    path?: string;
+    /**
+     * Whether we should add a trailing slash to the request path.
+     * @default true
+     */
+    addTrailingSlash?: boolean;
+    /**
+     * Either a single protocol string or an array of protocol strings. These strings are used to indicate sub-protocols,
+     * so that a single server can implement multiple WebSocket sub-protocols (for example, you might want one server to
+     * be able to handle different types of interactions depending on the specified protocol)
+     * @default []
+     */
+    protocols?: string | string[];
+}
+type TransportCtor = {
+    new (o: any): Transport;
+};
+type BaseSocketOptions = Omit<SocketOptions, "transports"> & {
+    transports: TransportCtor[];
+};
+interface HandshakeData {
+    sid: string;
+    upgrades: string[];
+    pingInterval: number;
+    pingTimeout: number;
+    maxPayload: number;
+}
+interface SocketReservedEvents {
+    open: () => void;
+    handshake: (data: HandshakeData) => void;
+    packet: (packet: Packet) => void;
+    packetCreate: (packet: Packet) => void;
+    data: (data: RawData) => void;
+    message: (data: RawData) => void;
+    drain: () => void;
+    flush: () => void;
+    heartbeat: () => void;
+    ping: () => void;
+    pong: () => void;
+    error: (err: string | Error) => void;
+    upgrading: (transport: Transport) => void;
+    upgrade: (transport: Transport) => void;
+    upgradeError: (err: Error) => void;
+    close: (reason: string, description?: CloseDetails | Error) => void;
+}
+type SocketState = "opening" | "open" | "closing" | "closed";
+interface WriteOptions {
+    compress?: boolean;
+}
+/**
+ * This class provides a WebSocket-like interface to connect to an Engine.IO server. The connection will be established
+ * with one of the available low-level transports, like HTTP long-polling, WebSocket or WebTransport.
+ *
+ * This class comes without upgrade mechanism, which means that it will keep the first low-level transport that
+ * successfully establishes the connection.
+ *
+ * In order to allow tree-shaking, there are no transports included, that's why the `transports` option is mandatory.
+ *
+ * @example
+ * import { SocketWithoutUpgrade, WebSocket } from "engine.io-client";
+ *
+ * const socket = new SocketWithoutUpgrade({
+ *   transports: [WebSocket]
+ * });
+ *
+ * socket.on("open", () => {
+ *   socket.send("hello");
+ * });
+ *
+ * @see SocketWithUpgrade
+ * @see Socket
+ */
+export declare class SocketWithoutUpgrade extends Emitter<Record<never, never>, Record<never, never>, SocketReservedEvents> {
+    id: string;
+    transport: Transport;
+    binaryType: BinaryType;
+    readyState: SocketState;
+    writeBuffer: Packet[];
+    protected readonly opts: BaseSocketOptions;
+    protected readonly transports: string[];
+    protected upgrading: boolean;
+    protected setTimeoutFn: typeof setTimeout;
+    private _prevBufferLen;
+    private _pingInterval;
+    private _pingTimeout;
+    private _maxPayload?;
+    private _pingTimeoutTimer;
+    /**
+     * The expiration timestamp of the {@link _pingTimeoutTimer} object is tracked, in case the timer is throttled and the
+     * callback is not fired on time. This can happen for example when a laptop is suspended or when a phone is locked.
+     */
+    private _pingTimeoutTime;
+    private clearTimeoutFn;
+    private readonly _beforeunloadEventListener;
+    private readonly _offlineEventListener;
+    private readonly secure;
+    private readonly hostname;
+    private readonly port;
+    private readonly _transportsByName;
+    /**
+     * The cookie jar will store the cookies sent by the server (Node. js only).
+     */
+    readonly _cookieJar: CookieJar;
+    static priorWebsocketSuccess: boolean;
+    static protocol: number;
+    /**
+     * Socket constructor.
+     *
+     * @param {String|Object} uri - uri or options
+     * @param {Object} opts - options
+     */
+    constructor(uri: string | BaseSocketOptions, opts: BaseSocketOptions);
+    /**
+     * Creates transport of the given type.
+     *
+     * @param {String} name - transport name
+     * @return {Transport}
+     * @private
+     */
+    protected createTransport(name: string): Transport;
+    /**
+     * Initializes transport to use and starts probe.
+     *
+     * @private
+     */
+    private _open;
+    /**
+     * Sets the current transport. Disables the existing one (if any).
+     *
+     * @private
+     */
+    protected setTransport(transport: Transport): void;
+    /**
+     * Called when connection is deemed open.
+     *
+     * @private
+     */
+    protected onOpen(): void;
+    /**
+     * Handles a packet.
+     *
+     * @private
+     */
+    private _onPacket;
+    /**
+     * Called upon handshake completion.
+     *
+     * @param {Object} data - handshake obj
+     * @private
+     */
+    protected onHandshake(data: HandshakeData): void;
+    /**
+     * Sets and resets ping timeout timer based on server pings.
+     *
+     * @private
+     */
+    private _resetPingTimeout;
+    /**
+     * Called on `drain` event
+     *
+     * @private
+     */
+    private _onDrain;
+    /**
+     * Flush write buffers.
+     *
+     * @private
+     */
+    protected flush(): void;
+    /**
+     * Ensure the encoded size of the writeBuffer is below the maxPayload value sent by the server (only for HTTP
+     * long-polling)
+     *
+     * @private
+     */
+    private _getWritablePackets;
+    /**
+     * Checks whether the heartbeat timer has expired but the socket has not yet been notified.
+     *
+     * Note: this method is private for now because it does not really fit the WebSocket API, but if we put it in the
+     * `write()` method then the message would not be buffered by the Socket.IO client.
+     *
+     * @return {boolean}
+     * @private
+     */
+    _hasPingExpired(): boolean;
+    /**
+     * Sends a message.
+     *
+     * @param {String} msg - message.
+     * @param {Object} options.
+     * @param {Function} fn - callback function.
+     * @return {Socket} for chaining.
+     */
+    write(msg: RawData, options?: WriteOptions, fn?: () => void): this;
+    /**
+     * Sends a message. Alias of {@link Socket#write}.
+     *
+     * @param {String} msg - message.
+     * @param {Object} options.
+     * @param {Function} fn - callback function.
+     * @return {Socket} for chaining.
+     */
+    send(msg: RawData, options?: WriteOptions, fn?: () => void): this;
+    /**
+     * Sends a packet.
+     *
+     * @param {String} type: packet type.
+     * @param {String} data.
+     * @param {Object} options.
+     * @param {Function} fn - callback function.
+     * @private
+     */
+    private _sendPacket;
+    /**
+     * Closes the connection.
+     */
+    close(): this;
+    /**
+     * Called upon transport error
+     *
+     * @private
+     */
+    private _onError;
+    /**
+     * Called upon transport close.
+     *
+     * @private
+     */
+    private _onClose;
+}
+/**
+ * This class provides a WebSocket-like interface to connect to an Engine.IO server. The connection will be established
+ * with one of the available low-level transports, like HTTP long-polling, WebSocket or WebTransport.
+ *
+ * This class comes with an upgrade mechanism, which means that once the connection is established with the first
+ * low-level transport, it will try to upgrade to a better transport.
+ *
+ * In order to allow tree-shaking, there are no transports included, that's why the `transports` option is mandatory.
+ *
+ * @example
+ * import { SocketWithUpgrade, WebSocket } from "engine.io-client";
+ *
+ * const socket = new SocketWithUpgrade({
+ *   transports: [WebSocket]
+ * });
+ *
+ * socket.on("open", () => {
+ *   socket.send("hello");
+ * });
+ *
+ * @see SocketWithoutUpgrade
+ * @see Socket
+ */
+export declare class SocketWithUpgrade extends SocketWithoutUpgrade {
+    private _upgrades;
+    onOpen(): void;
+    /**
+     * Probes a transport.
+     *
+     * @param {String} name - transport name
+     * @private
+     */
+    private _probe;
+    onHandshake(data: HandshakeData): void;
+    /**
+     * Filters upgrades, returning only those matching client transports.
+     *
+     * @param {Array} upgrades - server upgrades
+     * @private
+     */
+    private _filterUpgrades;
+}
+/**
+ * This class provides a WebSocket-like interface to connect to an Engine.IO server. The connection will be established
+ * with one of the available low-level transports, like HTTP long-polling, WebSocket or WebTransport.
+ *
+ * This class comes with an upgrade mechanism, which means that once the connection is established with the first
+ * low-level transport, it will try to upgrade to a better transport.
+ *
+ * @example
+ * import { Socket } from "engine.io-client";
+ *
+ * const socket = new Socket();
+ *
+ * socket.on("open", () => {
+ *   socket.send("hello");
+ * });
+ *
+ * @see SocketWithoutUpgrade
+ * @see SocketWithUpgrade
+ */
+export declare class Socket extends SocketWithUpgrade {
+    constructor(uri?: string, opts?: SocketOptions);
+    constructor(opts: SocketOptions);
+}
+export {};

node_modules/engine.io-client/build/esm/socket.js

@@ -0,0 +1,727 @@
+import { transports as DEFAULT_TRANSPORTS } from "./transports/index.js";
+import { installTimerFunctions, byteLength } from "./util.js";
+import { decode } from "./contrib/parseqs.js";
+import { parse } from "./contrib/parseuri.js";
+import { Emitter } from "@socket.io/component-emitter";
+import { protocol } from "engine.io-parser";
+import { createCookieJar, defaultBinaryType, nextTick, } from "./globals.node.js";
+const withEventListeners = typeof addEventListener === "function" &&
+    typeof removeEventListener === "function";
+const OFFLINE_EVENT_LISTENERS = [];
+if (withEventListeners) {
+    // within a ServiceWorker, any event handler for the 'offline' event must be added on the initial evaluation of the
+    // script, so we create one single event listener here which will forward the event to the socket instances
+    addEventListener("offline", () => {
+        OFFLINE_EVENT_LISTENERS.forEach((listener) => listener());
+    }, false);
+}
+/**
+ * This class provides a WebSocket-like interface to connect to an Engine.IO server. The connection will be established
+ * with one of the available low-level transports, like HTTP long-polling, WebSocket or WebTransport.
+ *
+ * This class comes without upgrade mechanism, which means that it will keep the first low-level transport that
+ * successfully establishes the connection.
+ *
+ * In order to allow tree-shaking, there are no transports included, that's why the `transports` option is mandatory.
+ *
+ * @example
+ * import { SocketWithoutUpgrade, WebSocket } from "engine.io-client";
+ *
+ * const socket = new SocketWithoutUpgrade({
+ *   transports: [WebSocket]
+ * });
+ *
+ * socket.on("open", () => {
+ *   socket.send("hello");
+ * });
+ *
+ * @see SocketWithUpgrade
+ * @see Socket
+ */
+export class SocketWithoutUpgrade extends Emitter {
+    /**
+     * Socket constructor.
+     *
+     * @param {String|Object} uri - uri or options
+     * @param {Object} opts - options
+     */
+    constructor(uri, opts) {
+        super();
+        this.binaryType = defaultBinaryType;
+        this.writeBuffer = [];
+        this._prevBufferLen = 0;
+        this._pingInterval = -1;
+        this._pingTimeout = -1;
+        this._maxPayload = -1;
+        /**
+         * The expiration timestamp of the {@link _pingTimeoutTimer} object is tracked, in case the timer is throttled and the
+         * callback is not fired on time. This can happen for example when a laptop is suspended or when a phone is locked.
+         */
+        this._pingTimeoutTime = Infinity;
+        if (uri && "object" === typeof uri) {
+            opts = uri;
+            uri = null;
+        }
+        if (uri) {
+            const parsedUri = parse(uri);
+            opts.hostname = parsedUri.host;
+            opts.secure =
+                parsedUri.protocol === "https" || parsedUri.protocol === "wss";
+            opts.port = parsedUri.port;
+            if (parsedUri.query)
+                opts.query = parsedUri.query;
+        }
+        else if (opts.host) {
+            opts.hostname = parse(opts.host).host;
+        }
+        installTimerFunctions(this, opts);
+        this.secure =
+            null != opts.secure
+                ? opts.secure
+                : typeof location !== "undefined" && "https:" === location.protocol;
+        if (opts.hostname && !opts.port) {
+            // if no port is specified manually, use the protocol default
+            opts.port = this.secure ? "443" : "80";
+        }
+        this.hostname =
+            opts.hostname ||
+                (typeof location !== "undefined" ? location.hostname : "localhost");
+        this.port =
+            opts.port ||
+                (typeof location !== "undefined" && location.port
+                    ? location.port
+                    : this.secure
+                        ? "443"
+                        : "80");
+        this.transports = [];
+        this._transportsByName = {};
+        opts.transports.forEach((t) => {
+            const transportName = t.prototype.name;
+            this.transports.push(transportName);
+            this._transportsByName[transportName] = t;
+        });
+        this.opts = Object.assign({
+            path: "/engine.io",
+            agent: false,
+            withCredentials: false,
+            upgrade: true,
+            timestampParam: "t",
+            rememberUpgrade: false,
+            addTrailingSlash: true,
+            rejectUnauthorized: true,
+            perMessageDeflate: {
+                threshold: 1024,
+            },
+            transportOptions: {},
+            closeOnBeforeunload: false,
+        }, opts);
+        this.opts.path =
+            this.opts.path.replace(/\/$/, "") +
+                (this.opts.addTrailingSlash ? "/" : "");
+        if (typeof this.opts.query === "string") {
+            this.opts.query = decode(this.opts.query);
+        }
+        if (withEventListeners) {
+            if (this.opts.closeOnBeforeunload) {
+                // Firefox closes the connection when the "beforeunload" event is emitted but not Chrome. This event listener
+                // ensures every browser behaves the same (no "disconnect" event at the Socket.IO level when the page is
+                // closed/reloaded)
+                this._beforeunloadEventListener = () => {
+                    if (this.transport) {
+                        // silently close the transport
+                        this.transport.removeAllListeners();
+                        this.transport.close();
+                    }
+                };
+                addEventListener("beforeunload", this._beforeunloadEventListener, false);
+            }
+            if (this.hostname !== "localhost") {
+                this._offlineEventListener = () => {
+                    this._onClose("transport close", {
+                        description: "network connection lost",
+                    });
+                };
+                OFFLINE_EVENT_LISTENERS.push(this._offlineEventListener);
+            }
+        }
+        if (this.opts.withCredentials) {
+            this._cookieJar = createCookieJar();
+        }
+        this._open();
+    }
+    /**
+     * Creates transport of the given type.
+     *
+     * @param {String} name - transport name
+     * @return {Transport}
+     * @private
+     */
+    createTransport(name) {
+        const query = Object.assign({}, this.opts.query);
+        // append engine.io protocol identifier
+        query.EIO = protocol;
+        // transport name
+        query.transport = name;
+        // session id if we already have one
+        if (this.id)
+            query.sid = this.id;
+        const opts = Object.assign({}, this.opts, {
+            query,
+            socket: this,
+            hostname: this.hostname,
+            secure: this.secure,
+            port: this.port,
+        }, this.opts.transportOptions[name]);
+        return new this._transportsByName[name](opts);
+    }
+    /**
+     * Initializes transport to use and starts probe.
+     *
+     * @private
+     */
+    _open() {
+        if (this.transports.length === 0) {
+            // Emit error on next tick so it can be listened to
+            this.setTimeoutFn(() => {
+                this.emitReserved("error", "No transports available");
+            }, 0);
+            return;
+        }
+        const transportName = this.opts.rememberUpgrade &&
+            SocketWithoutUpgrade.priorWebsocketSuccess &&
+            this.transports.indexOf("websocket") !== -1
+            ? "websocket"
+            : this.transports[0];
+        this.readyState = "opening";
+        const transport = this.createTransport(transportName);
+        transport.open();
+        this.setTransport(transport);
+    }
+    /**
+     * Sets the current transport. Disables the existing one (if any).
+     *
+     * @private
+     */
+    setTransport(transport) {
+        if (this.transport) {
+            this.transport.removeAllListeners();
+        }
+        // set up transport
+        this.transport = transport;
+        // set up transport listeners
+        transport
+            .on("drain", this._onDrain.bind(this))
+            .on("packet", this._onPacket.bind(this))
+            .on("error", this._onError.bind(this))
+            .on("close", (reason) => this._onClose("transport close", reason));
+    }
+    /**
+     * Called when connection is deemed open.
+     *
+     * @private
+     */
+    onOpen() {
+        this.readyState = "open";
+        SocketWithoutUpgrade.priorWebsocketSuccess =
+            "websocket" === this.transport.name;
+        this.emitReserved("open");
+        this.flush();
+    }
+    /**
+     * Handles a packet.
+     *
+     * @private
+     */
+    _onPacket(packet) {
+        if ("opening" === this.readyState ||
+            "open" === this.readyState ||
+            "closing" === this.readyState) {
+            this.emitReserved("packet", packet);
+            // Socket is live - any packet counts
+            this.emitReserved("heartbeat");
+            switch (packet.type) {
+                case "open":
+                    this.onHandshake(JSON.parse(packet.data));
+                    break;
+                case "ping":
+                    this._sendPacket("pong");
+                    this.emitReserved("ping");
+                    this.emitReserved("pong");
+                    this._resetPingTimeout();
+                    break;
+                case "error":
+                    const err = new Error("server error");
+                    // @ts-ignore
+                    err.code = packet.data;
+                    this._onError(err);
+                    break;
+                case "message":
+                    this.emitReserved("data", packet.data);
+                    this.emitReserved("message", packet.data);
+                    break;
+            }
+        }
+        else {
+        }
+    }
+    /**
+     * Called upon handshake completion.
+     *
+     * @param {Object} data - handshake obj
+     * @private
+     */
+    onHandshake(data) {
+        this.emitReserved("handshake", data);
+        this.id = data.sid;
+        this.transport.query.sid = data.sid;
+        this._pingInterval = data.pingInterval;
+        this._pingTimeout = data.pingTimeout;
+        this._maxPayload = data.maxPayload;
+        this.onOpen();
+        // In case open handler closes socket
+        if ("closed" === this.readyState)
+            return;
+        this._resetPingTimeout();
+    }
+    /**
+     * Sets and resets ping timeout timer based on server pings.
+     *
+     * @private
+     */
+    _resetPingTimeout() {
+        this.clearTimeoutFn(this._pingTimeoutTimer);
+        const delay = this._pingInterval + this._pingTimeout;
+        this._pingTimeoutTime = Date.now() + delay;
+        this._pingTimeoutTimer = this.setTimeoutFn(() => {
+            this._onClose("ping timeout");
+        }, delay);
+        if (this.opts.autoUnref) {
+            this._pingTimeoutTimer.unref();
+        }
+    }
+    /**
+     * Called on `drain` event
+     *
+     * @private
+     */
+    _onDrain() {
+        this.writeBuffer.splice(0, this._prevBufferLen);
+        // setting prevBufferLen = 0 is very important
+        // for example, when upgrading, upgrade packet is sent over,
+        // and a nonzero prevBufferLen could cause problems on `drain`
+        this._prevBufferLen = 0;
+        if (0 === this.writeBuffer.length) {
+            this.emitReserved("drain");
+        }
+        else {
+            this.flush();
+        }
+    }
+    /**
+     * Flush write buffers.
+     *
+     * @private
+     */
+    flush() {
+        if ("closed" !== this.readyState &&
+            this.transport.writable &&
+            !this.upgrading &&
+            this.writeBuffer.length) {
+            const packets = this._getWritablePackets();
+            this.transport.send(packets);
+            // keep track of current length of writeBuffer
+            // splice writeBuffer and callbackBuffer on `drain`
+            this._prevBufferLen = packets.length;
+            this.emitReserved("flush");
+        }
+    }
+    /**
+     * Ensure the encoded size of the writeBuffer is below the maxPayload value sent by the server (only for HTTP
+     * long-polling)
+     *
+     * @private
+     */
+    _getWritablePackets() {
+        const shouldCheckPayloadSize = this._maxPayload &&
+            this.transport.name === "polling" &&
+            this.writeBuffer.length > 1;
+        if (!shouldCheckPayloadSize) {
+            return this.writeBuffer;
+        }
+        let payloadSize = 1; // first packet type
+        for (let i = 0; i < this.writeBuffer.length; i++) {
+            const data = this.writeBuffer[i].data;
+            if (data) {
+                payloadSize += byteLength(data);
+            }
+            if (i > 0 && payloadSize > this._maxPayload) {
+                return this.writeBuffer.slice(0, i);
+            }
+            payloadSize += 2; // separator + packet type
+        }
+        return this.writeBuffer;
+    }
+    /**
+     * Checks whether the heartbeat timer has expired but the socket has not yet been notified.
+     *
+     * Note: this method is private for now because it does not really fit the WebSocket API, but if we put it in the
+     * `write()` method then the message would not be buffered by the Socket.IO client.
+     *
+     * @return {boolean}
+     * @private
+     */
+    /* private */ _hasPingExpired() {
+        if (!this._pingTimeoutTime)
+            return true;
+        const hasExpired = Date.now() > this._pingTimeoutTime;
+        if (hasExpired) {
+            this._pingTimeoutTime = 0;
+            nextTick(() => {
+                this._onClose("ping timeout");
+            }, this.setTimeoutFn);
+        }
+        return hasExpired;
+    }
+    /**
+     * Sends a message.
+     *
+     * @param {String} msg - message.
+     * @param {Object} options.
+     * @param {Function} fn - callback function.
+     * @return {Socket} for chaining.
+     */
+    write(msg, options, fn) {
+        this._sendPacket("message", msg, options, fn);
+        return this;
+    }
+    /**
+     * Sends a message. Alias of {@link Socket#write}.
+     *
+     * @param {String} msg - message.
+     * @param {Object} options.
+     * @param {Function} fn - callback function.
+     * @return {Socket} for chaining.
+     */
+    send(msg, options, fn) {
+        this._sendPacket("message", msg, options, fn);
+        return this;
+    }
+    /**
+     * Sends a packet.
+     *
+     * @param {String} type: packet type.
+     * @param {String} data.
+     * @param {Object} options.
+     * @param {Function} fn - callback function.
+     * @private
+     */
+    _sendPacket(type, data, options, fn) {
+        if ("function" === typeof data) {
+            fn = data;
+            data = undefined;
+        }
+        if ("function" === typeof options) {
+            fn = options;
+            options = null;
+        }
+        if ("closing" === this.readyState || "closed" === this.readyState) {
+            return;
+        }
+        options = options || {};
+        options.compress = false !== options.compress;
+        const packet = {
+            type: type,
+            data: data,
+            options: options,
+        };
+        this.emitReserved("packetCreate", packet);
+        this.writeBuffer.push(packet);
+        if (fn)
+            this.once("flush", fn);
+        this.flush();
+    }
+    /**
+     * Closes the connection.
+     */
+    close() {
+        const close = () => {
+            this._onClose("forced close");
+            this.transport.close();
+        };
+        const cleanupAndClose = () => {
+            this.off("upgrade", cleanupAndClose);
+            this.off("upgradeError", cleanupAndClose);
+            close();
+        };
+        const waitForUpgrade = () => {
+            // wait for upgrade to finish since we can't send packets while pausing a transport
+            this.once("upgrade", cleanupAndClose);
+            this.once("upgradeError", cleanupAndClose);
+        };
+        if ("opening" === this.readyState || "open" === this.readyState) {
+            this.readyState = "closing";
+            if (this.writeBuffer.length) {
+                this.once("drain", () => {
+                    if (this.upgrading) {
+                        waitForUpgrade();
+                    }
+                    else {
+                        close();
+                    }
+                });
+            }
+            else if (this.upgrading) {
+                waitForUpgrade();
+            }
+            else {
+                close();
+            }
+        }
+        return this;
+    }
+    /**
+     * Called upon transport error
+     *
+     * @private
+     */
+    _onError(err) {
+        SocketWithoutUpgrade.priorWebsocketSuccess = false;
+        if (this.opts.tryAllTransports &&
+            this.transports.length > 1 &&
+            this.readyState === "opening") {
+            this.transports.shift();
+            return this._open();
+        }
+        this.emitReserved("error", err);
+        this._onClose("transport error", err);
+    }
+    /**
+     * Called upon transport close.
+     *
+     * @private
+     */
+    _onClose(reason, description) {
+        if ("opening" === this.readyState ||
+            "open" === this.readyState ||
+            "closing" === this.readyState) {
+            // clear timers
+            this.clearTimeoutFn(this._pingTimeoutTimer);
+            // stop event from firing again for transport
+            this.transport.removeAllListeners("close");
+            // ensure transport won't stay open
+            this.transport.close();
+            // ignore further transport communication
+            this.transport.removeAllListeners();
+            if (withEventListeners) {
+                if (this._beforeunloadEventListener) {
+                    removeEventListener("beforeunload", this._beforeunloadEventListener, false);
+                }
+                if (this._offlineEventListener) {
+                    const i = OFFLINE_EVENT_LISTENERS.indexOf(this._offlineEventListener);
+                    if (i !== -1) {
+                        OFFLINE_EVENT_LISTENERS.splice(i, 1);
+                    }
+                }
+            }
+            // set ready state
+            this.readyState = "closed";
+            // clear session id
+            this.id = null;
+            // emit close event
+            this.emitReserved("close", reason, description);
+            // clean buffers after, so users can still
+            // grab the buffers on `close` event
+            this.writeBuffer = [];
+            this._prevBufferLen = 0;
+        }
+    }
+}
+SocketWithoutUpgrade.protocol = protocol;
+/**
+ * This class provides a WebSocket-like interface to connect to an Engine.IO server. The connection will be established
+ * with one of the available low-level transports, like HTTP long-polling, WebSocket or WebTransport.
+ *
+ * This class comes with an upgrade mechanism, which means that once the connection is established with the first
+ * low-level transport, it will try to upgrade to a better transport.
+ *
+ * In order to allow tree-shaking, there are no transports included, that's why the `transports` option is mandatory.
+ *
+ * @example
+ * import { SocketWithUpgrade, WebSocket } from "engine.io-client";
+ *
+ * const socket = new SocketWithUpgrade({
+ *   transports: [WebSocket]
+ * });
+ *
+ * socket.on("open", () => {
+ *   socket.send("hello");
+ * });
+ *
+ * @see SocketWithoutUpgrade
+ * @see Socket
+ */
+export class SocketWithUpgrade extends SocketWithoutUpgrade {
+    constructor() {
+        super(...arguments);
+        this._upgrades = [];
+    }
+    onOpen() {
+        super.onOpen();
+        if ("open" === this.readyState && this.opts.upgrade) {
+            for (let i = 0; i < this._upgrades.length; i++) {
+                this._probe(this._upgrades[i]);
+            }
+        }
+    }
+    /**
+     * Probes a transport.
+     *
+     * @param {String} name - transport name
+     * @private
+     */
+    _probe(name) {
+        let transport = this.createTransport(name);
+        let failed = false;
+        SocketWithoutUpgrade.priorWebsocketSuccess = false;
+        const onTransportOpen = () => {
+            if (failed)
+                return;
+            transport.send([{ type: "ping", data: "probe" }]);
+            transport.once("packet", (msg) => {
+                if (failed)
+                    return;
+                if ("pong" === msg.type && "probe" === msg.data) {
+                    this.upgrading = true;
+                    this.emitReserved("upgrading", transport);
+                    if (!transport)
+                        return;
+                    SocketWithoutUpgrade.priorWebsocketSuccess =
+                        "websocket" === transport.name;
+                    this.transport.pause(() => {
+                        if (failed)
+                            return;
+                        if ("closed" === this.readyState)
+                            return;
+                        cleanup();
+                        this.setTransport(transport);
+                        transport.send([{ type: "upgrade" }]);
+                        this.emitReserved("upgrade", transport);
+                        transport = null;
+                        this.upgrading = false;
+                        this.flush();
+                    });
+                }
+                else {
+                    const err = new Error("probe error");
+                    // @ts-ignore
+                    err.transport = transport.name;
+                    this.emitReserved("upgradeError", err);
+                }
+            });
+        };
+        function freezeTransport() {
+            if (failed)
+                return;
+            // Any callback called by transport should be ignored since now
+            failed = true;
+            cleanup();
+            transport.close();
+            transport = null;
+        }
+        // Handle any error that happens while probing
+        const onerror = (err) => {
+            const error = new Error("probe error: " + err);
+            // @ts-ignore
+            error.transport = transport.name;
+            freezeTransport();
+            this.emitReserved("upgradeError", error);
+        };
+        function onTransportClose() {
+            onerror("transport closed");
+        }
+        // When the socket is closed while we're probing
+        function onclose() {
+            onerror("socket closed");
+        }
+        // When the socket is upgraded while we're probing
+        function onupgrade(to) {
+            if (transport && to.name !== transport.name) {
+                freezeTransport();
+            }
+        }
+        // Remove all listeners on the transport and on self
+        const cleanup = () => {
+            transport.removeListener("open", onTransportOpen);
+            transport.removeListener("error", onerror);
+            transport.removeListener("close", onTransportClose);
+            this.off("close", onclose);
+            this.off("upgrading", onupgrade);
+        };
+        transport.once("open", onTransportOpen);
+        transport.once("error", onerror);
+        transport.once("close", onTransportClose);
+        this.once("close", onclose);
+        this.once("upgrading", onupgrade);
+        if (this._upgrades.indexOf("webtransport") !== -1 &&
+            name !== "webtransport") {
+            // favor WebTransport
+            this.setTimeoutFn(() => {
+                if (!failed) {
+                    transport.open();
+                }
+            }, 200);
+        }
+        else {
+            transport.open();
+        }
+    }
+    onHandshake(data) {
+        this._upgrades = this._filterUpgrades(data.upgrades);
+        super.onHandshake(data);
+    }
+    /**
+     * Filters upgrades, returning only those matching client transports.
+     *
+     * @param {Array} upgrades - server upgrades
+     * @private
+     */
+    _filterUpgrades(upgrades) {
+        const filteredUpgrades = [];
+        for (let i = 0; i < upgrades.length; i++) {
+            if (~this.transports.indexOf(upgrades[i]))
+                filteredUpgrades.push(upgrades[i]);
+        }
+        return filteredUpgrades;
+    }
+}
+/**
+ * This class provides a WebSocket-like interface to connect to an Engine.IO server. The connection will be established
+ * with one of the available low-level transports, like HTTP long-polling, WebSocket or WebTransport.
+ *
+ * This class comes with an upgrade mechanism, which means that once the connection is established with the first
+ * low-level transport, it will try to upgrade to a better transport.
+ *
+ * @example
+ * import { Socket } from "engine.io-client";
+ *
+ * const socket = new Socket();
+ *
+ * socket.on("open", () => {
+ *   socket.send("hello");
+ * });
+ *
+ * @see SocketWithoutUpgrade
+ * @see SocketWithUpgrade
+ */
+export class Socket extends SocketWithUpgrade {
+    constructor(uri, opts = {}) {
+        const o = typeof uri === "object" ? uri : opts;
+        if (!o.transports ||
+            (o.transports && typeof o.transports[0] === "string")) {
+            o.transports = (o.transports || ["polling", "websocket", "webtransport"])
+                .map((transportName) => DEFAULT_TRANSPORTS[transportName])
+                .filter((t) => !!t);
+        }
+        super(uri, o);
+    }
+}

node_modules/engine.io-client/build/esm/transport.d.ts

@@ -0,0 +1,106 @@
+import type { Packet, RawData } from "engine.io-parser";
+import { Emitter } from "@socket.io/component-emitter";
+import type { Socket, SocketOptions } from "./socket.js";
+export declare class TransportError extends Error {
+    readonly description: any;
+    readonly context: any;
+    readonly type = "TransportError";
+    constructor(reason: string, description: any, context: any);
+}
+export interface CloseDetails {
+    description: string;
+    context?: unknown;
+}
+interface TransportReservedEvents {
+    open: () => void;
+    error: (err: TransportError) => void;
+    packet: (packet: Packet) => void;
+    close: (details?: CloseDetails) => void;
+    poll: () => void;
+    pollComplete: () => void;
+    drain: () => void;
+}
+type TransportState = "opening" | "open" | "closed" | "pausing" | "paused";
+export declare abstract class Transport extends Emitter<Record<never, never>, Record<never, never>, TransportReservedEvents> {
+    query: Record<string, string>;
+    writable: boolean;
+    protected opts: SocketOptions;
+    protected supportsBinary: boolean;
+    protected readyState: TransportState;
+    protected socket: Socket;
+    protected setTimeoutFn: typeof setTimeout;
+    /**
+     * Transport abstract constructor.
+     *
+     * @param {Object} opts - options
+     * @protected
+     */
+    constructor(opts: any);
+    /**
+     * Emits an error.
+     *
+     * @param {String} reason
+     * @param description
+     * @param context - the error context
+     * @return {Transport} for chaining
+     * @protected
+     */
+    protected onError(reason: string, description: any, context?: any): this;
+    /**
+     * Opens the transport.
+     */
+    open(): this;
+    /**
+     * Closes the transport.
+     */
+    close(): this;
+    /**
+     * Sends multiple packets.
+     *
+     * @param {Array} packets
+     */
+    send(packets: any): void;
+    /**
+     * Called upon open
+     *
+     * @protected
+     */
+    protected onOpen(): void;
+    /**
+     * Called with data.
+     *
+     * @param {String} data
+     * @protected
+     */
+    protected onData(data: RawData): void;
+    /**
+     * Called with a decoded packet.
+     *
+     * @protected
+     */
+    protected onPacket(packet: Packet): void;
+    /**
+     * Called upon close.
+     *
+     * @protected
+     */
+    protected onClose(details?: CloseDetails): void;
+    /**
+     * The name of the transport
+     */
+    abstract get name(): string;
+    /**
+     * Pauses the transport, in order not to lose packets during an upgrade.
+     *
+     * @param onPause
+     */
+    pause(onPause: () => void): void;
+    protected createUri(schema: string, query?: Record<string, unknown>): string;
+    private _hostname;
+    private _port;
+    private _query;
+    protected abstract doOpen(): any;
+    protected abstract doClose(): any;
+    protected abstract write(packets: Packet[]): any;
+}
+export {};

node_modules/engine.io-client/build/esm/transport.js

@@ -0,0 +1,142 @@
+import { decodePacket } from "engine.io-parser";
+import { Emitter } from "@socket.io/component-emitter";
+import { installTimerFunctions } from "./util.js";
+import { encode } from "./contrib/parseqs.js";
+export class TransportError extends Error {
+    constructor(reason, description, context) {
+        super(reason);
+        this.description = description;
+        this.context = context;
+        this.type = "TransportError";
+    }
+}
+export class Transport extends Emitter {
+    /**
+     * Transport abstract constructor.
+     *
+     * @param {Object} opts - options
+     * @protected
+     */
+    constructor(opts) {
+        super();
+        this.writable = false;
+        installTimerFunctions(this, opts);
+        this.opts = opts;
+        this.query = opts.query;
+        this.socket = opts.socket;
+        this.supportsBinary = !opts.forceBase64;
+    }
+    /**
+     * Emits an error.
+     *
+     * @param {String} reason
+     * @param description
+     * @param context - the error context
+     * @return {Transport} for chaining
+     * @protected
+     */
+    onError(reason, description, context) {
+        super.emitReserved("error", new TransportError(reason, description, context));
+        return this;
+    }
+    /**
+     * Opens the transport.
+     */
+    open() {
+        this.readyState = "opening";
+        this.doOpen();
+        return this;
+    }
+    /**
+     * Closes the transport.
+     */
+    close() {
+        if (this.readyState === "opening" || this.readyState === "open") {
+            this.doClose();
+            this.onClose();
+        }
+        return this;
+    }
+    /**
+     * Sends multiple packets.
+     *
+     * @param {Array} packets
+     */
+    send(packets) {
+        if (this.readyState === "open") {
+            this.write(packets);
+        }
+        else {
+            // this might happen if the transport was silently closed in the beforeunload event handler
+        }
+    }
+    /**
+     * Called upon open
+     *
+     * @protected
+     */
+    onOpen() {
+        this.readyState = "open";
+        this.writable = true;
+        super.emitReserved("open");
+    }
+    /**
+     * Called with data.
+     *
+     * @param {String} data
+     * @protected
+     */
+    onData(data) {
+        const packet = decodePacket(data, this.socket.binaryType);
+        this.onPacket(packet);
+    }
+    /**
+     * Called with a decoded packet.
+     *
+     * @protected
+     */
+    onPacket(packet) {
+        super.emitReserved("packet", packet);
+    }
+    /**
+     * Called upon close.
+     *
+     * @protected
+     */
+    onClose(details) {
+        this.readyState = "closed";
+        super.emitReserved("close", details);
+    }
+    /**
+     * Pauses the transport, in order not to lose packets during an upgrade.
+     *
+     * @param onPause
+     */
+    pause(onPause) { }
+    createUri(schema, query = {}) {
+        return (schema +
+            "://" +
+            this._hostname() +
+            this._port() +
+            this.opts.path +
+            this._query(query));
+    }
+    _hostname() {
+        const hostname = this.opts.hostname;
+        return hostname.indexOf(":") === -1 ? hostname : "[" + hostname + "]";
+    }
+    _port() {
+        if (this.opts.port &&
+            ((this.opts.secure && Number(this.opts.port !== 443)) ||
+                (!this.opts.secure && Number(this.opts.port) !== 80))) {
+            return ":" + this.opts.port;
+        }
+        else {
+            return "";
+        }
+    }
+    _query(query) {
+        const encodedQuery = encode(query);
+        return encodedQuery.length ? "?" + encodedQuery : "";
+    }
+}

node_modules/engine.io-client/build/esm/transports/index.d.ts

@@ -0,0 +1,8 @@
+import { XHR } from "./polling-xhr.node.js";
+import { WS } from "./websocket.node.js";
+import { WT } from "./webtransport.js";
+export declare const transports: {
+    websocket: typeof WS;
+    webtransport: typeof WT;
+    polling: typeof XHR;
+};

node_modules/engine.io-client/build/esm/transports/index.js

@@ -0,0 +1,8 @@
+import { XHR } from "./polling-xhr.node.js";
+import { WS } from "./websocket.node.js";
+import { WT } from "./webtransport.js";
+export const transports = {
+    websocket: WS,
+    webtransport: WT,
+    polling: XHR,
+};

node_modules/engine.io-client/build/esm/transports/polling-fetch.d.ts

@@ -0,0 +1,15 @@
+import { Polling } from "./polling.js";
+/**
+ * HTTP long-polling based on the built-in `fetch()` method.
+ *
+ * Usage: browser, Node.js (since v18), Deno, Bun
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/fetch
+ * @see https://caniuse.com/fetch
+ * @see https://nodejs.org/api/globals.html#fetch
+ */
+export declare class Fetch extends Polling {
+    doPoll(): void;
+    doWrite(data: string, callback: () => void): void;
+    private _fetch;
+}

node_modules/engine.io-client/build/esm/transports/polling-fetch.js

@@ -0,0 +1,56 @@
+import { Polling } from "./polling.js";
+/**
+ * HTTP long-polling based on the built-in `fetch()` method.
+ *
+ * Usage: browser, Node.js (since v18), Deno, Bun
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/fetch
+ * @see https://caniuse.com/fetch
+ * @see https://nodejs.org/api/globals.html#fetch
+ */
+export class Fetch extends Polling {
+    doPoll() {
+        this._fetch()
+            .then((res) => {
+            if (!res.ok) {
+                return this.onError("fetch read error", res.status, res);
+            }
+            res.text().then((data) => this.onData(data));
+        })
+            .catch((err) => {
+            this.onError("fetch read error", err);
+        });
+    }
+    doWrite(data, callback) {
+        this._fetch(data)
+            .then((res) => {
+            if (!res.ok) {
+                return this.onError("fetch write error", res.status, res);
+            }
+            callback();
+        })
+            .catch((err) => {
+            this.onError("fetch write error", err);
+        });
+    }
+    _fetch(data) {
+        var _a;
+        const isPost = data !== undefined;
+        const headers = new Headers(this.opts.extraHeaders);
+        if (isPost) {
+            headers.set("content-type", "text/plain;charset=UTF-8");
+        }
+        (_a = this.socket._cookieJar) === null || _a === void 0 ? void 0 : _a.appendCookies(headers);
+        return fetch(this.uri(), {
+            method: isPost ? "POST" : "GET",
+            body: isPost ? data : null,
+            headers,
+            credentials: this.opts.withCredentials ? "include" : "omit",
+        }).then((res) => {
+            var _a;
+            // @ts-ignore getSetCookie() was added in Node.js v19.7.0
+            (_a = this.socket._cookieJar) === null || _a === void 0 ? void 0 : _a.parseCookies(res.headers.getSetCookie());
+            return res;
+        });
+    }
+}

node_modules/engine.io-client/build/esm/transports/polling-xhr.d.ts

@@ -0,0 +1,108 @@
+import { Polling } from "./polling.js";
+import { Emitter } from "@socket.io/component-emitter";
+import type { SocketOptions } from "../socket.js";
+import type { CookieJar } from "../globals.node.js";
+import type { RawData } from "engine.io-parser";
+export declare abstract class BaseXHR extends Polling {
+    protected readonly xd: boolean;
+    private pollXhr;
+    /**
+     * XHR Polling constructor.
+     *
+     * @param {Object} opts
+     * @package
+     */
+    constructor(opts: any);
+    /**
+     * Creates a request.
+     *
+     * @private
+     */
+    abstract request(opts?: Record<string, any>): any;
+    /**
+     * Sends data.
+     *
+     * @param {String} data to send.
+     * @param {Function} called upon flush.
+     * @private
+     */
+    doWrite(data: any, fn: any): void;
+    /**
+     * Starts a poll cycle.
+     *
+     * @private
+     */
+    doPoll(): void;
+}
+interface RequestReservedEvents {
+    success: () => void;
+    data: (data: RawData) => void;
+    error: (err: number | Error, context: unknown) => void;
+}
+export type RequestOptions = SocketOptions & {
+    method?: string;
+    data?: RawData;
+    xd: boolean;
+    cookieJar: CookieJar;
+};
+export declare class Request extends Emitter<Record<never, never>, Record<never, never>, RequestReservedEvents> {
+    private readonly createRequest;
+    private readonly _opts;
+    private readonly _method;
+    private readonly _uri;
+    private readonly _data;
+    private _xhr;
+    private setTimeoutFn;
+    private _index;
+    static requestsCount: number;
+    static requests: {};
+    /**
+     * Request constructor
+     *
+     * @param {Object} options
+     * @package
+     */
+    constructor(createRequest: (opts: RequestOptions) => XMLHttpRequest, uri: string, opts: RequestOptions);
+    /**
+     * Creates the XHR object and sends the request.
+     *
+     * @private
+     */
+    private _create;
+    /**
+     * Called upon error.
+     *
+     * @private
+     */
+    private _onError;
+    /**
+     * Cleans up house.
+     *
+     * @private
+     */
+    private _cleanup;
+    /**
+     * Called upon load.
+     *
+     * @private
+     */
+    private _onLoad;
+    /**
+     * Aborts the request.
+     *
+     * @package
+     */
+    abort(): void;
+}
+/**
+ * HTTP long-polling based on the built-in `XMLHttpRequest` object.
+ *
+ * Usage: browser
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest
+ */
+export declare class XHR extends BaseXHR {
+    constructor(opts: any);
+    request(opts?: Record<string, any>): Request;
+}
+export {};

node_modules/engine.io-client/build/esm/transports/polling-xhr.js

@@ -0,0 +1,271 @@
+import { Polling } from "./polling.js";
+import { Emitter } from "@socket.io/component-emitter";
+import { installTimerFunctions, pick } from "../util.js";
+import { globalThisShim as globalThis } from "../globals.node.js";
+import { hasCORS } from "../contrib/has-cors.js";
+function empty() { }
+export class BaseXHR extends Polling {
+    /**
+     * XHR Polling constructor.
+     *
+     * @param {Object} opts
+     * @package
+     */
+    constructor(opts) {
+        super(opts);
+        if (typeof location !== "undefined") {
+            const isSSL = "https:" === location.protocol;
+            let port = location.port;
+            // some user agents have empty `location.port`
+            if (!port) {
+                port = isSSL ? "443" : "80";
+            }
+            this.xd =
+                (typeof location !== "undefined" &&
+                    opts.hostname !== location.hostname) ||
+                    port !== opts.port;
+        }
+    }
+    /**
+     * Sends data.
+     *
+     * @param {String} data to send.
+     * @param {Function} called upon flush.
+     * @private
+     */
+    doWrite(data, fn) {
+        const req = this.request({
+            method: "POST",
+            data: data,
+        });
+        req.on("success", fn);
+        req.on("error", (xhrStatus, context) => {
+            this.onError("xhr post error", xhrStatus, context);
+        });
+    }
+    /**
+     * Starts a poll cycle.
+     *
+     * @private
+     */
+    doPoll() {
+        const req = this.request();
+        req.on("data", this.onData.bind(this));
+        req.on("error", (xhrStatus, context) => {
+            this.onError("xhr poll error", xhrStatus, context);
+        });
+        this.pollXhr = req;
+    }
+}
+export class Request extends Emitter {
+    /**
+     * Request constructor
+     *
+     * @param {Object} options
+     * @package
+     */
+    constructor(createRequest, uri, opts) {
+        super();
+        this.createRequest = createRequest;
+        installTimerFunctions(this, opts);
+        this._opts = opts;
+        this._method = opts.method || "GET";
+        this._uri = uri;
+        this._data = undefined !== opts.data ? opts.data : null;
+        this._create();
+    }
+    /**
+     * Creates the XHR object and sends the request.
+     *
+     * @private
+     */
+    _create() {
+        var _a;
+        const opts = pick(this._opts, "agent", "pfx", "key", "passphrase", "cert", "ca", "ciphers", "rejectUnauthorized", "autoUnref");
+        opts.xdomain = !!this._opts.xd;
+        const xhr = (this._xhr = this.createRequest(opts));
+        try {
+            xhr.open(this._method, this._uri, true);
+            try {
+                if (this._opts.extraHeaders) {
+                    // @ts-ignore
+                    xhr.setDisableHeaderCheck && xhr.setDisableHeaderCheck(true);
+                    for (let i in this._opts.extraHeaders) {
+                        if (this._opts.extraHeaders.hasOwnProperty(i)) {
+                            xhr.setRequestHeader(i, this._opts.extraHeaders[i]);
+                        }
+                    }
+                }
+            }
+            catch (e) { }
+            if ("POST" === this._method) {
+                try {
+                    xhr.setRequestHeader("Content-type", "text/plain;charset=UTF-8");
+                }
+                catch (e) { }
+            }
+            try {
+                xhr.setRequestHeader("Accept", "*/*");
+            }
+            catch (e) { }
+            (_a = this._opts.cookieJar) === null || _a === void 0 ? void 0 : _a.addCookies(xhr);
+            // ie6 check
+            if ("withCredentials" in xhr) {
+                xhr.withCredentials = this._opts.withCredentials;
+            }
+            if (this._opts.requestTimeout) {
+                xhr.timeout = this._opts.requestTimeout;
+            }
+            xhr.onreadystatechange = () => {
+                var _a;
+                if (xhr.readyState === 3) {
+                    (_a = this._opts.cookieJar) === null || _a === void 0 ? void 0 : _a.parseCookies(
+                    // @ts-ignore
+                    xhr.getResponseHeader("set-cookie"));
+                }
+                if (4 !== xhr.readyState)
+                    return;
+                if (200 === xhr.status || 1223 === xhr.status) {
+                    this._onLoad();
+                }
+                else {
+                    // make sure the `error` event handler that's user-set
+                    // does not throw in the same tick and gets caught here
+                    this.setTimeoutFn(() => {
+                        this._onError(typeof xhr.status === "number" ? xhr.status : 0);
+                    }, 0);
+                }
+            };
+            xhr.send(this._data);
+        }
+        catch (e) {
+            // Need to defer since .create() is called directly from the constructor
+            // and thus the 'error' event can only be only bound *after* this exception
+            // occurs.  Therefore, also, we cannot throw here at all.
+            this.setTimeoutFn(() => {
+                this._onError(e);
+            }, 0);
+            return;
+        }
+        if (typeof document !== "undefined") {
+            this._index = Request.requestsCount++;
+            Request.requests[this._index] = this;
+        }
+    }
+    /**
+     * Called upon error.
+     *
+     * @private
+     */
+    _onError(err) {
+        this.emitReserved("error", err, this._xhr);
+        this._cleanup(true);
+    }
+    /**
+     * Cleans up house.
+     *
+     * @private
+     */
+    _cleanup(fromError) {
+        if ("undefined" === typeof this._xhr || null === this._xhr) {
+            return;
+        }
+        this._xhr.onreadystatechange = empty;
+        if (fromError) {
+            try {
+                this._xhr.abort();
+            }
+            catch (e) { }
+        }
+        if (typeof document !== "undefined") {
+            delete Request.requests[this._index];
+        }
+        this._xhr = null;
+    }
+    /**
+     * Called upon load.
+     *
+     * @private
+     */
+    _onLoad() {
+        const data = this._xhr.responseText;
+        if (data !== null) {
+            this.emitReserved("data", data);
+            this.emitReserved("success");
+            this._cleanup();
+        }
+    }
+    /**
+     * Aborts the request.
+     *
+     * @package
+     */
+    abort() {
+        this._cleanup();
+    }
+}
+Request.requestsCount = 0;
+Request.requests = {};
+/**
+ * Aborts pending requests when unloading the window. This is needed to prevent
+ * memory leaks (e.g. when using IE) and to ensure that no spurious error is
+ * emitted.
+ */
+if (typeof document !== "undefined") {
+    // @ts-ignore
+    if (typeof attachEvent === "function") {
+        // @ts-ignore
+        attachEvent("onunload", unloadHandler);
+    }
+    else if (typeof addEventListener === "function") {
+        const terminationEvent = "onpagehide" in globalThis ? "pagehide" : "unload";
+        addEventListener(terminationEvent, unloadHandler, false);
+    }
+}
+function unloadHandler() {
+    for (let i in Request.requests) {
+        if (Request.requests.hasOwnProperty(i)) {
+            Request.requests[i].abort();
+        }
+    }
+}
+const hasXHR2 = (function () {
+    const xhr = newRequest({
+        xdomain: false,
+    });
+    return xhr && xhr.responseType !== null;
+})();
+/**
+ * HTTP long-polling based on the built-in `XMLHttpRequest` object.
+ *
+ * Usage: browser
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest
+ */
+export class XHR extends BaseXHR {
+    constructor(opts) {
+        super(opts);
+        const forceBase64 = opts && opts.forceBase64;
+        this.supportsBinary = hasXHR2 && !forceBase64;
+    }
+    request(opts = {}) {
+        Object.assign(opts, { xd: this.xd }, this.opts);
+        return new Request(newRequest, this.uri(), opts);
+    }
+}
+function newRequest(opts) {
+    const xdomain = opts.xdomain;
+    // XMLHttpRequest can be disabled on IE
+    try {
+        if ("undefined" !== typeof XMLHttpRequest && (!xdomain || hasCORS)) {
+            return new XMLHttpRequest();
+        }
+    }
+    catch (e) { }
+    if (!xdomain) {
+        try {
+            return new globalThis[["Active"].concat("Object").join("X")]("Microsoft.XMLHTTP");
+        }
+        catch (e) { }
+    }
+}

node_modules/engine.io-client/build/esm/transports/polling-xhr.node.d.ts

@@ -0,0 +1,11 @@
+import { BaseXHR, Request } from "./polling-xhr.js";
+/**
+ * HTTP long-polling based on the `XMLHttpRequest` object provided by the `xmlhttprequest-ssl` package.
+ *
+ * Usage: Node.js, Deno (compat), Bun (compat)
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest
+ */
+export declare class XHR extends BaseXHR {
+    request(opts?: Record<string, any>): Request;
+}