git.squeep.com Git - squeep-api-dingus/blob - lib/mime-helper.js

   1 /* eslint-disable security/detect-object-injection */
   2 'use strict';
   3
   4 const mimeDb = require('mime-db');
   5
   6 const defaultType = 'application/octet-stream';
   7 const extension = {};
   8 for (const [mimeType, entry] of Object.entries(mimeDb)) {
   9   if (entry.extensions) {
  10     entry.extensions.forEach((ext) => {
  11       if (!(ext in extension)) {
  12         extension[ext] = [];
  13       }
  14       extension[ext].push(mimeType);
  15     });
  16   }
  17 }
  18
  19 /**
  20  * Return a suitable type for a file extension.
  21  * @param {string} ext file extension
  22  * @param {string} def type to return if no match
  23  */
  24 const extensionToMime = (ext, def = defaultType) => extension[ext] && extension[ext][extension[ext].length - 1] || def;
  25
  26 module.exports = {
  27   extensionToMime,
  28 };