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5 |
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6 | "use strict";
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7 |
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8 | const RuntimeGlobals = require("./RuntimeGlobals");
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9 | const CachedConstDependency = require("./dependencies/CachedConstDependency");
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10 | const ConstDependency = require("./dependencies/ConstDependency");
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11 | const {
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12 | evaluateToString,
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13 | expressionIsUnsupported
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14 | } = require("./javascript/JavascriptParserHelpers");
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15 | const { relative } = require("./util/fs");
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16 | const { parseResource } = require("./util/identifier");
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17 |
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18 |
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19 |
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20 |
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21 |
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22 |
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23 |
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24 | class NodeStuffPlugin {
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25 | constructor(options) {
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26 | this.options = options;
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27 | }
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28 |
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29 | |
30 |
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31 |
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32 |
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33 |
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34 | apply(compiler) {
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35 | const options = this.options;
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36 | compiler.hooks.compilation.tap(
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37 | "NodeStuffPlugin",
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38 | (compilation, { normalModuleFactory }) => {
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39 | const handler = (parser, parserOptions) => {
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40 | if (parserOptions.node === false) return;
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41 |
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42 | let localOptions = options;
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43 | if (parserOptions.node) {
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44 | localOptions = { ...localOptions, ...parserOptions.node };
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45 | }
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46 |
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47 | if (localOptions.global) {
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48 | parser.hooks.expression
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49 | .for("global")
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50 | .tap("NodeStuffPlugin", expr => {
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51 | const dep = new ConstDependency(
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52 | RuntimeGlobals.global,
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53 | expr.range,
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54 | [RuntimeGlobals.global]
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55 | );
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56 | dep.loc = expr.loc;
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57 | parser.state.module.addPresentationalDependency(dep);
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58 | });
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59 | }
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60 |
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61 | const setModuleConstant = (expressionName, fn) => {
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62 | parser.hooks.expression
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63 | .for(expressionName)
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64 | .tap("NodeStuffPlugin", expr => {
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65 | const dep = new CachedConstDependency(
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66 | JSON.stringify(fn(parser.state.module)),
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67 | expr.range,
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68 | expressionName
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69 | );
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70 | dep.loc = expr.loc;
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71 | parser.state.module.addPresentationalDependency(dep);
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72 | return true;
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73 | });
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74 | };
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75 |
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76 | const setConstant = (expressionName, value) =>
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77 | setModuleConstant(expressionName, () => value);
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78 |
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79 | const context = compiler.context;
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80 | if (localOptions.__filename) {
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81 | if (localOptions.__filename === "mock") {
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82 | setConstant("__filename", "/index.js");
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83 | } else if (localOptions.__filename === true) {
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84 | setModuleConstant("__filename", module =>
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85 | relative(compiler.inputFileSystem, context, module.resource)
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86 | );
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87 | }
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88 | parser.hooks.evaluateIdentifier
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89 | .for("__filename")
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90 | .tap("NodeStuffPlugin", expr => {
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91 | if (!parser.state.module) return;
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92 | const resource = parseResource(parser.state.module.resource);
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93 | return evaluateToString(resource.path)(expr);
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94 | });
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95 | }
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96 | if (localOptions.__dirname) {
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97 | if (localOptions.__dirname === "mock") {
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98 | setConstant("__dirname", "/");
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99 | } else if (localOptions.__dirname === true) {
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100 | setModuleConstant("__dirname", module =>
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101 | relative(compiler.inputFileSystem, context, module.context)
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102 | );
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103 | }
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104 | parser.hooks.evaluateIdentifier
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105 | .for("__dirname")
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106 | .tap("NodeStuffPlugin", expr => {
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107 | if (!parser.state.module) return;
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108 | return evaluateToString(parser.state.module.context)(expr);
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109 | });
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110 | }
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111 | parser.hooks.expression
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112 | .for("require.extensions")
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113 | .tap(
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114 | "NodeStuffPlugin",
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115 | expressionIsUnsupported(
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116 | parser,
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117 | "require.extensions is not supported by webpack. Use a loader instead."
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118 | )
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119 | );
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120 | };
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121 |
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122 | normalModuleFactory.hooks.parser
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123 | .for("javascript/auto")
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124 | .tap("NodeStuffPlugin", handler);
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125 | normalModuleFactory.hooks.parser
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126 | .for("javascript/dynamic")
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127 | .tap("NodeStuffPlugin", handler);
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128 | }
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129 | );
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130 | }
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131 | }
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132 |
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133 | module.exports = NodeStuffPlugin;
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