mirror of https://github.com/webpack/webpack.git
78 lines
1.9 KiB
JavaScript
78 lines
1.9 KiB
JavaScript
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/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Ivan Kopeykin @vankop
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*/
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"use strict";
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const {
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toConstantDependency
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} = require("../javascript/JavascriptParserHelpers");
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const ImportMetaDependency = require("./ImportMetaDependency");
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/** @typedef {import("../Compiler")} Compiler */
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/** @typedef {import("../javascript/JavascriptParser")} Parser */
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class ImportMetaPlugin {
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/**
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* @param {Compiler} compiler compiler
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*/
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apply(compiler) {
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compiler.hooks.compilation.tap(
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"ImportMetaPlugin",
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(compilation, { normalModuleFactory }) => {
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compilation.dependencyTemplates.set(
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ImportMetaDependency,
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new ImportMetaDependency.Template()
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);
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/**
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* @param {Parser} parser parser
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* @param {Object} parserOptions parserOptions
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* @returns {void}
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*/
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const parserHandler = (parser, parserOptions) => {
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parser.hooks.typeof
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.for("import.meta")
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.tap(
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"ImportMetaPlugin",
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toConstantDependency(parser, JSON.stringify("object"))
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);
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parser.hooks.typeof
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.for("import.meta.url")
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.tap(
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"ImportMetaPlugin",
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toConstantDependency(parser, JSON.stringify("string"))
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);
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parser.hooks.metaProperty.tap("ImportMetaPlugin", expr => {
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parser.state.module.addPresentationalDependency(
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new ImportMetaDependency(expr.range)
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);
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});
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parser.hooks.expression
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.for("import.meta.url")
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.tap("ImportMetaPlugin", expr => {
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parser.state.module.addPresentationalDependency(
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new ImportMetaDependency(
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expr.range,
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ImportMetaDependency.ImportMetaProperty.Url
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)
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);
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return true;
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});
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};
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normalModuleFactory.hooks.parser
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.for("javascript/auto")
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.tap("ImportMetaPlugin", parserHandler);
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normalModuleFactory.hooks.parser
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.for("javascript/esm")
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.tap("ImportMetaPlugin", parserHandler);
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}
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);
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}
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}
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module.exports = ImportMetaPlugin;
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