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5 |
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6 | "use strict";
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7 |
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8 | const ContextElementDependency = require("./dependencies/ContextElementDependency");
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9 | const { join } = require("./util/fs");
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10 |
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11 | class ContextReplacementPlugin {
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12 | constructor(
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13 | resourceRegExp,
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14 | newContentResource,
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15 | newContentRecursive,
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16 | newContentRegExp
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17 | ) {
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18 | this.resourceRegExp = resourceRegExp;
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19 |
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20 | if (typeof newContentResource === "function") {
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21 | this.newContentCallback = newContentResource;
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22 | } else if (
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23 | typeof newContentResource === "string" &&
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24 | typeof newContentRecursive === "object"
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25 | ) {
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26 | this.newContentResource = newContentResource;
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27 | this.newContentCreateContextMap = (fs, callback) => {
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28 | callback(null, newContentRecursive);
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29 | };
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30 | } else if (
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31 | typeof newContentResource === "string" &&
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32 | typeof newContentRecursive === "function"
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33 | ) {
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34 | this.newContentResource = newContentResource;
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35 | this.newContentCreateContextMap = newContentRecursive;
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36 | } else {
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37 | if (typeof newContentResource !== "string") {
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38 | newContentRegExp = newContentRecursive;
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39 | newContentRecursive = newContentResource;
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40 | newContentResource = undefined;
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41 | }
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42 | if (typeof newContentRecursive !== "boolean") {
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43 | newContentRegExp = newContentRecursive;
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44 | newContentRecursive = undefined;
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45 | }
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46 | this.newContentResource = newContentResource;
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47 | this.newContentRecursive = newContentRecursive;
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48 | this.newContentRegExp = newContentRegExp;
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49 | }
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50 | }
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51 |
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52 | apply(compiler) {
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53 | const resourceRegExp = this.resourceRegExp;
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54 | const newContentCallback = this.newContentCallback;
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55 | const newContentResource = this.newContentResource;
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56 | const newContentRecursive = this.newContentRecursive;
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57 | const newContentRegExp = this.newContentRegExp;
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58 | const newContentCreateContextMap = this.newContentCreateContextMap;
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59 |
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60 | compiler.hooks.contextModuleFactory.tap("ContextReplacementPlugin", cmf => {
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61 | cmf.hooks.beforeResolve.tap("ContextReplacementPlugin", result => {
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62 | if (!result) return;
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63 | if (resourceRegExp.test(result.request)) {
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64 | if (newContentResource !== undefined) {
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65 | result.request = newContentResource;
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66 | }
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67 | if (newContentRecursive !== undefined) {
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68 | result.recursive = newContentRecursive;
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69 | }
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70 | if (newContentRegExp !== undefined) {
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71 | result.regExp = newContentRegExp;
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72 | }
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73 | if (typeof newContentCallback === "function") {
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74 | newContentCallback(result);
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75 | } else {
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76 | for (const d of result.dependencies) {
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77 | if (d.critical) d.critical = false;
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78 | }
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79 | }
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80 | }
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81 | return result;
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82 | });
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83 | cmf.hooks.afterResolve.tap("ContextReplacementPlugin", result => {
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84 | if (!result) return;
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85 | if (resourceRegExp.test(result.resource)) {
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86 | if (newContentResource !== undefined) {
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87 | if (
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88 | newContentResource.startsWith("/") ||
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89 | (newContentResource.length > 1 && newContentResource[1] === ":")
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90 | ) {
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91 | result.resource = newContentResource;
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92 | } else {
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93 | result.resource = join(
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94 | compiler.inputFileSystem,
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95 | result.resource,
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96 | newContentResource
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97 | );
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98 | }
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99 | }
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100 | if (newContentRecursive !== undefined) {
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101 | result.recursive = newContentRecursive;
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102 | }
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103 | if (newContentRegExp !== undefined) {
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104 | result.regExp = newContentRegExp;
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105 | }
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106 | if (typeof newContentCreateContextMap === "function") {
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107 | result.resolveDependencies = createResolveDependenciesFromContextMap(
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108 | newContentCreateContextMap
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109 | );
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110 | }
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111 | if (typeof newContentCallback === "function") {
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112 | const origResource = result.resource;
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113 | newContentCallback(result);
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114 | if (
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115 | result.resource !== origResource &&
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116 | !result.resource.startsWith("/") &&
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117 | (result.resource.length <= 1 || result.resource[1] !== ":")
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118 | ) {
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119 |
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120 | result.resource = join(
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121 | compiler.inputFileSystem,
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122 | origResource,
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123 | result.resource
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124 | );
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125 | }
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126 | } else {
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127 | for (const d of result.dependencies) {
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128 | if (d.critical) d.critical = false;
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129 | }
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130 | }
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131 | }
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132 | return result;
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133 | });
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134 | });
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135 | }
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136 | }
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137 |
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138 | const createResolveDependenciesFromContextMap = createContextMap => {
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139 | const resolveDependenciesFromContextMap = (fs, options, callback) => {
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140 | createContextMap(fs, (err, map) => {
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141 | if (err) return callback(err);
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142 | const dependencies = Object.keys(map).map(key => {
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143 | return new ContextElementDependency(
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144 | map[key] + options.resourceQuery + options.resourceFragment,
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145 | key,
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146 | options.category,
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147 | options.referencedExports
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148 | );
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149 | });
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150 | callback(null, dependencies);
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151 | });
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152 | };
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153 | return resolveDependenciesFromContextMap;
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154 | };
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155 |
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156 | module.exports = ContextReplacementPlugin;
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