Updated script that can be controled by Nodejs web app

node_modules/mime/src/build.js

@@ -0,0 +1,53 @@
+#!/usr/bin/env node
+
+'use strict';
+
+const fs = require('fs');
+const path = require('path');
+const mimeScore = require('mime-score');
+
+let db = require('mime-db');
+let chalk = require('chalk');
+
+const STANDARD_FACET_SCORE = 900;
+
+const byExtension = {};
+
+// Clear out any conflict extensions in mime-db
+for (let type in db) {
+  let entry = db[type];
+  entry.type = type;
+
+  if (!entry.extensions) continue;
+
+  entry.extensions.forEach(ext => {
+    if (ext in byExtension) {
+      const e0 = entry;
+      const e1 = byExtension[ext];
+      e0.pri = mimeScore(e0.type, e0.source);
+      e1.pri = mimeScore(e1.type, e1.source);
+
+      let drop = e0.pri < e1.pri ? e0 : e1;
+      let keep = e0.pri >= e1.pri ? e0 : e1;
+      drop.extensions = drop.extensions.filter(e => e !== ext);
+
+      console.log(`${ext}: Keeping ${chalk.green(keep.type)} (${keep.pri}), dropping ${chalk.red(drop.type)} (${drop.pri})`);
+    }
+    byExtension[ext] = entry;
+  });
+}
+
+function writeTypesFile(types, path) {
+  fs.writeFileSync(path, JSON.stringify(types));
+}
+
+// Segregate into standard and non-standard types based on facet per
+// https://tools.ietf.org/html/rfc6838#section-3.1
+const types = {};
+
+Object.keys(db).sort().forEach(k => {
+  const entry = db[k];
+  types[entry.type] = entry.extensions;
+});
+
+writeTypesFile(types, path.join(__dirname, '..', 'types.json'));