1 |
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2 |
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3 |
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4 |
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5 | "use strict";
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6 |
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7 | const path = require("path");
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8 | const ContextElementDependency = require("./dependencies/ContextElementDependency");
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9 |
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10 | class ContextReplacementPlugin {
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11 | constructor(
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12 | resourceRegExp,
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13 | newContentResource,
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14 | newContentRecursive,
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15 | newContentRegExp
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16 | ) {
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17 | this.resourceRegExp = resourceRegExp;
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18 |
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19 | if (typeof newContentResource === "function") {
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20 | this.newContentCallback = newContentResource;
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21 | } else if (
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22 | typeof newContentResource === "string" &&
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23 | typeof newContentRecursive === "object"
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24 | ) {
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25 | this.newContentResource = newContentResource;
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26 | this.newContentCreateContextMap = (fs, callback) => {
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27 | callback(null, newContentRecursive);
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28 | };
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29 | } else if (
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30 | typeof newContentResource === "string" &&
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31 | typeof newContentRecursive === "function"
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32 | ) {
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33 | this.newContentResource = newContentResource;
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34 | this.newContentCreateContextMap = newContentRecursive;
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35 | } else {
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36 | if (typeof newContentResource !== "string") {
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37 | newContentRegExp = newContentRecursive;
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38 | newContentRecursive = newContentResource;
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39 | newContentResource = undefined;
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40 | }
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41 | if (typeof newContentRecursive !== "boolean") {
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42 | newContentRegExp = newContentRecursive;
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43 | newContentRecursive = undefined;
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44 | }
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45 | this.newContentResource = newContentResource;
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46 | this.newContentRecursive = newContentRecursive;
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47 | this.newContentRegExp = newContentRegExp;
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48 | }
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49 | }
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50 |
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51 | apply(compiler) {
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52 | const resourceRegExp = this.resourceRegExp;
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53 | const newContentCallback = this.newContentCallback;
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54 | const newContentResource = this.newContentResource;
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55 | const newContentRecursive = this.newContentRecursive;
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56 | const newContentRegExp = this.newContentRegExp;
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57 | const newContentCreateContextMap = this.newContentCreateContextMap;
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58 |
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59 | compiler.hooks.contextModuleFactory.tap("ContextReplacementPlugin", cmf => {
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60 | cmf.hooks.beforeResolve.tap("ContextReplacementPlugin", result => {
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61 | if (!result) return;
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62 | if (resourceRegExp.test(result.request)) {
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63 | if (newContentResource !== undefined) {
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64 | result.request = newContentResource;
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65 | }
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66 | if (newContentRecursive !== undefined) {
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67 | result.recursive = newContentRecursive;
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68 | }
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69 | if (newContentRegExp !== undefined) {
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70 | result.regExp = newContentRegExp;
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71 | }
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72 | if (typeof newContentCallback === "function") {
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73 | newContentCallback(result);
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74 | } else {
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75 | for (const d of result.dependencies) {
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76 | if (d.critical) d.critical = false;
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77 | }
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78 | }
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79 | }
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80 | return result;
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81 | });
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82 | cmf.hooks.afterResolve.tap("ContextReplacementPlugin", result => {
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83 | if (!result) return;
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84 | if (resourceRegExp.test(result.resource)) {
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85 | if (newContentResource !== undefined) {
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86 | result.resource = path.resolve(result.resource, newContentResource);
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87 | }
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88 | if (newContentRecursive !== undefined) {
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89 | result.recursive = newContentRecursive;
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90 | }
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91 | if (newContentRegExp !== undefined) {
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92 | result.regExp = newContentRegExp;
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93 | }
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94 | if (typeof newContentCreateContextMap === "function") {
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95 | result.resolveDependencies = createResolveDependenciesFromContextMap(
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96 | newContentCreateContextMap
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97 | );
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98 | }
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99 | if (typeof newContentCallback === "function") {
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100 | const origResource = result.resource;
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101 | newContentCallback(result);
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102 | if (result.resource !== origResource) {
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103 | result.resource = path.resolve(origResource, result.resource);
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104 | }
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105 | } else {
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106 | for (const d of result.dependencies) {
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107 | if (d.critical) d.critical = false;
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108 | }
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109 | }
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110 | }
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111 | return result;
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112 | });
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113 | });
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114 | }
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115 | }
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116 |
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117 | const createResolveDependenciesFromContextMap = createContextMap => {
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118 | const resolveDependenciesFromContextMap = (fs, options, callback) => {
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119 | createContextMap(fs, (err, map) => {
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120 | if (err) return callback(err);
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121 | const dependencies = Object.keys(map).map(key => {
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122 | return new ContextElementDependency(
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123 | map[key] + options.resourceQuery,
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124 | key
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125 | );
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126 | });
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127 | callback(null, dependencies);
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128 | });
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129 | };
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130 | return resolveDependenciesFromContextMap;
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131 | };
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132 |
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133 | module.exports = ContextReplacementPlugin;
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