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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 WebpackError = require("../WebpackError");
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10 | const {
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11 | evaluateToString,
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12 | expressionIsUnsupported,
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13 | toConstantDependency
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14 | } = require("../javascript/JavascriptParserHelpers");
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15 | const makeSerializable = require("../util/makeSerializable");
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16 | const ConstDependency = require("./ConstDependency");
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17 | const SystemRuntimeModule = require("./SystemRuntimeModule");
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18 |
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19 |
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20 |
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21 | class SystemPlugin {
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22 | |
23 |
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24 |
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25 |
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26 |
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27 | apply(compiler) {
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28 | compiler.hooks.compilation.tap(
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29 | "SystemPlugin",
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30 | (compilation, { normalModuleFactory }) => {
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31 | compilation.hooks.runtimeRequirementInModule
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32 | .for(RuntimeGlobals.system)
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33 | .tap("SystemPlugin", (module, set) => {
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34 | set.add(RuntimeGlobals.requireScope);
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35 | });
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36 |
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37 | compilation.hooks.runtimeRequirementInTree
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38 | .for(RuntimeGlobals.system)
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39 | .tap("SystemPlugin", (chunk, set) => {
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40 | compilation.addRuntimeModule(chunk, new SystemRuntimeModule());
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41 | });
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42 |
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43 | const handler = (parser, parserOptions) => {
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44 | if (parserOptions.system === undefined || !parserOptions.system) {
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45 | return;
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46 | }
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47 |
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48 | const setNotSupported = name => {
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49 | parser.hooks.evaluateTypeof
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50 | .for(name)
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51 | .tap("SystemPlugin", evaluateToString("undefined"));
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52 | parser.hooks.expression
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53 | .for(name)
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54 | .tap(
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55 | "SystemPlugin",
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56 | expressionIsUnsupported(
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57 | parser,
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58 | name + " is not supported by webpack."
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59 | )
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60 | );
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61 | };
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62 |
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63 | parser.hooks.typeof
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64 | .for("System.import")
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65 | .tap(
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66 | "SystemPlugin",
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67 | toConstantDependency(parser, JSON.stringify("function"))
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68 | );
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69 | parser.hooks.evaluateTypeof
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70 | .for("System.import")
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71 | .tap("SystemPlugin", evaluateToString("function"));
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72 | parser.hooks.typeof
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73 | .for("System")
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74 | .tap(
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75 | "SystemPlugin",
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76 | toConstantDependency(parser, JSON.stringify("object"))
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77 | );
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78 | parser.hooks.evaluateTypeof
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79 | .for("System")
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80 | .tap("SystemPlugin", evaluateToString("object"));
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81 |
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82 | setNotSupported("System.set");
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83 | setNotSupported("System.get");
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84 | setNotSupported("System.register");
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85 |
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86 | parser.hooks.expression.for("System").tap("SystemPlugin", expr => {
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87 | const dep = new ConstDependency(RuntimeGlobals.system, expr.range, [
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88 | RuntimeGlobals.system
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89 | ]);
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90 | dep.loc = expr.loc;
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91 | parser.state.module.addPresentationalDependency(dep);
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92 | return true;
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93 | });
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94 |
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95 | parser.hooks.call.for("System.import").tap("SystemPlugin", expr => {
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96 | parser.state.module.addWarning(
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97 | new SystemImportDeprecationWarning(expr.loc)
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98 | );
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99 |
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100 | return parser.hooks.importCall.call({
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101 | type: "ImportExpression",
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102 | source: expr.arguments[0],
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103 | loc: expr.loc,
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104 | range: expr.range
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105 | });
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106 | });
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107 | };
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108 |
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109 | normalModuleFactory.hooks.parser
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110 | .for("javascript/auto")
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111 | .tap("SystemPlugin", handler);
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112 | normalModuleFactory.hooks.parser
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113 | .for("javascript/dynamic")
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114 | .tap("SystemPlugin", handler);
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115 | }
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116 | );
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117 | }
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118 | }
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119 |
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120 | class SystemImportDeprecationWarning extends WebpackError {
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121 | constructor(loc) {
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122 | super(
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123 | "System.import() is deprecated and will be removed soon. Use import() instead.\n" +
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124 | "For more info visit https://webpack.js.org/guides/code-splitting/"
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125 | );
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126 |
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127 | this.name = "SystemImportDeprecationWarning";
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128 |
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129 | this.loc = loc;
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130 | }
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131 | }
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132 |
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133 | makeSerializable(
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134 | SystemImportDeprecationWarning,
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135 | "webpack/lib/dependencies/SystemPlugin",
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136 | "SystemImportDeprecationWarning"
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137 | );
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138 |
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139 | module.exports = SystemPlugin;
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140 | module.exports.SystemImportDeprecationWarning = SystemImportDeprecationWarning;
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