source: trip-planner-front/node_modules/webpack-sources/lib/CachedSource.js@ 76712b2

Last change on this file since 76712b2 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit

  • Property mode set to 100644
File size: 2.0 KB
Line 
1/*
2 MIT License http://www.opensource.org/licenses/mit-license.php
3 Author Tobias Koppers @sokra
4*/
5"use strict";
6
7const Source = require("./Source");
8
9class CachedSource extends Source {
10 constructor(source) {
11 super();
12 this._source = source;
13 this._cachedSource = undefined;
14 this._cachedSize = undefined;
15 this._cachedMaps = {};
16
17 if(source.node) this.node = function(options) {
18 return this._source.node(options);
19 };
20
21 if(source.listMap) this.listMap = function(options) {
22 return this._source.listMap(options);
23 };
24 }
25
26 source() {
27 if(typeof this._cachedSource !== "undefined") return this._cachedSource;
28 return this._cachedSource = this._source.source();
29 }
30
31 size() {
32 if(typeof this._cachedSize !== "undefined") return this._cachedSize;
33 if(typeof this._cachedSource !== "undefined") {
34 if(Buffer.from.length === 1) return new Buffer(this._cachedSource).length;
35 return this._cachedSize = Buffer.byteLength(this._cachedSource);
36 }
37 return this._cachedSize = this._source.size();
38 }
39
40 sourceAndMap(options) {
41 const key = JSON.stringify(options);
42 if(typeof this._cachedSource !== "undefined" && key in this._cachedMaps)
43 return {
44 source: this._cachedSource,
45 map: this._cachedMaps[key]
46 };
47 else if(typeof this._cachedSource !== "undefined") {
48 return {
49 source: this._cachedSource,
50 map: this._cachedMaps[key] = this._source.map(options)
51 };
52 } else if(key in this._cachedMaps) {
53 return {
54 source: this._cachedSource = this._source.source(),
55 map: this._cachedMaps[key]
56 };
57 }
58 const result = this._source.sourceAndMap(options);
59 this._cachedSource = result.source;
60 this._cachedMaps[key] = result.map;
61 return {
62 source: this._cachedSource,
63 map: this._cachedMaps[key]
64 };
65 }
66
67 map(options) {
68 if(!options) options = {};
69 const key = JSON.stringify(options);
70 if(key in this._cachedMaps)
71 return this._cachedMaps[key];
72 return this._cachedMaps[key] = this._source.map();
73 }
74
75 updateHash(hash) {
76 this._source.updateHash(hash);
77 }
78}
79
80module.exports = CachedSource;
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