1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.import db from "./vendor/mime-db.v1.52.0.ts";import type { DBEntry } from "./_util.ts";
export type KeyOfDb = keyof typeof db;
/** A map of the media type for a given extension */export const types = new Map<string, KeyOfDb>();
/** A map of extensions for a given media type. */const extensions: Map<string, string[]> = new Map();
/** Internal function to populate the maps based on the Mime DB. */const preference = ["nginx", "apache", undefined, "iana"];
for (const type of Object.keys(db) as KeyOfDb[]) {  const mime = db[type] as DBEntry;  const exts = mime.extensions;
  if (!exts || !exts.length) {    continue;  }
  // @ts-ignore work around denoland/dnt#148  extensions.set(type, exts);
  for (const ext of exts) {    const current = types.get(ext);    if (current) {      const from = preference.indexOf((db[current] as DBEntry).source);      const to = preference.indexOf(mime.source);
      if (        current !== "application/octet-stream" &&        (from > to ||          // @ts-ignore work around denoland/dnt#148          (from === to && current.startsWith("application/")))      ) {        continue;      }    }
    types.set(ext, type);  }}
export { db, extensions };