init

马宇豪

2024-07-16 f591c27b57e2418c9495bc02ae8cfff84d35bc18

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/*
    MIT License http://www.opensource.org/licenses/mit-license.php
    Author Ivan Kopeykin @vankop
*/
 
"use strict";
 
const {
    JAVASCRIPT_MODULE_TYPE_AUTO,
    JAVASCRIPT_MODULE_TYPE_ESM
} = require("../ModuleTypeConstants");
const ContextElementDependency = require("./ContextElementDependency");
const ImportMetaContextDependency = require("./ImportMetaContextDependency");
const ImportMetaContextDependencyParserPlugin = require("./ImportMetaContextDependencyParserPlugin");
 
/** @typedef {import("../../declarations/WebpackOptions").JavascriptParserOptions} JavascriptParserOptions */
/** @typedef {import("../../declarations/WebpackOptions").ResolveOptions} ResolveOptions */
/** @typedef {import("../Compiler")} Compiler */
/** @typedef {import("../javascript/JavascriptParser")} Parser */
 
const PLUGIN_NAME = "ImportMetaContextPlugin";
 
class ImportMetaContextPlugin {
    /**
     * Apply the plugin
     * @param {Compiler} compiler the compiler instance
     * @returns {void}
     */
    apply(compiler) {
        compiler.hooks.compilation.tap(
            PLUGIN_NAME,
            (compilation, { contextModuleFactory, normalModuleFactory }) => {
                compilation.dependencyFactories.set(
                    ImportMetaContextDependency,
                    contextModuleFactory
                );
                compilation.dependencyTemplates.set(
                    ImportMetaContextDependency,
                    new ImportMetaContextDependency.Template()
                );
                compilation.dependencyFactories.set(
                    ContextElementDependency,
                    normalModuleFactory
                );
 
                /**
                 * @param {Parser} parser parser parser
                 * @param {JavascriptParserOptions} parserOptions parserOptions
                 * @returns {void}
                 */
                const handler = (parser, parserOptions) => {
                    if (
                        parserOptions.importMetaContext !== undefined &&
                        !parserOptions.importMetaContext
                    )
                        return;
 
                    new ImportMetaContextDependencyParserPlugin().apply(parser);
                };
 
                normalModuleFactory.hooks.parser
                    .for(JAVASCRIPT_MODULE_TYPE_AUTO)
                    .tap(PLUGIN_NAME, handler);
                normalModuleFactory.hooks.parser
                    .for(JAVASCRIPT_MODULE_TYPE_ESM)
                    .tap(PLUGIN_NAME, handler);
            }
        );
    }
}
 
module.exports = ImportMetaContextPlugin;