source: trip-planner-front/node_modules/enhanced-resolve/lib/FileExistsPlugin.js

Last change on this file was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit

  • Property mode set to 100644
File size: 1.5 KB
Line 
1/*
2 MIT License http://www.opensource.org/licenses/mit-license.php
3 Author Tobias Koppers @sokra
4*/
5
6"use strict";
7
8/** @typedef {import("./Resolver")} Resolver */
9/** @typedef {import("./Resolver").ResolveStepHook} ResolveStepHook */
10
11module.exports = class FileExistsPlugin {
12 /**
13 * @param {string | ResolveStepHook} source source
14 * @param {string | ResolveStepHook} target target
15 */
16 constructor(source, target) {
17 this.source = source;
18 this.target = target;
19 }
20
21 /**
22 * @param {Resolver} resolver the resolver
23 * @returns {void}
24 */
25 apply(resolver) {
26 const target = resolver.ensureHook(this.target);
27 const fs = resolver.fileSystem;
28 resolver
29 .getHook(this.source)
30 .tapAsync("FileExistsPlugin", (request, resolveContext, callback) => {
31 const file = request.path;
32 if (!file) return callback();
33 fs.stat(file, (err, stat) => {
34 if (err || !stat) {
35 if (resolveContext.missingDependencies)
36 resolveContext.missingDependencies.add(file);
37 if (resolveContext.log) resolveContext.log(file + " doesn't exist");
38 return callback();
39 }
40 if (!stat.isFile()) {
41 if (resolveContext.missingDependencies)
42 resolveContext.missingDependencies.add(file);
43 if (resolveContext.log) resolveContext.log(file + " is not a file");
44 return callback();
45 }
46 if (resolveContext.fileDependencies)
47 resolveContext.fileDependencies.add(file);
48 resolver.doResolve(
49 target,
50 request,
51 "existing file: " + file,
52 resolveContext,
53 callback
54 );
55 });
56 });
57 }
58};
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