source: trip-planner-front/node_modules/enhanced-resolve/lib/ConditionalPlugin.js@ fa375fe

Last change on this file since fa375fe was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit

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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").ResolveRequest} ResolveRequest */
10/** @typedef {import("./Resolver").ResolveStepHook} ResolveStepHook */
11
12module.exports = class ConditionalPlugin {
13 /**
14 * @param {string | ResolveStepHook} source source
15 * @param {Partial<ResolveRequest>} test compare object
16 * @param {string | null} message log message
17 * @param {boolean} allowAlternatives when false, do not continue with the current step when "test" matches
18 * @param {string | ResolveStepHook} target target
19 */
20 constructor(source, test, message, allowAlternatives, target) {
21 this.source = source;
22 this.test = test;
23 this.message = message;
24 this.allowAlternatives = allowAlternatives;
25 this.target = target;
26 }
27
28 /**
29 * @param {Resolver} resolver the resolver
30 * @returns {void}
31 */
32 apply(resolver) {
33 const target = resolver.ensureHook(this.target);
34 const { test, message, allowAlternatives } = this;
35 const keys = Object.keys(test);
36 resolver
37 .getHook(this.source)
38 .tapAsync("ConditionalPlugin", (request, resolveContext, callback) => {
39 for (const prop of keys) {
40 if (request[prop] !== test[prop]) return callback();
41 }
42 resolver.doResolve(
43 target,
44 request,
45 message,
46 resolveContext,
47 allowAlternatives
48 ? callback
49 : (err, result) => {
50 if (err) return callback(err);
51
52 // Don't allow other alternatives
53 if (result === undefined) return callback(null, null);
54 callback(null, result);
55 }
56 );
57 });
58 }
59};
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