webpack/lib/dependencies/HarmonyModulesPlugin.js

Packs CommonJs/AMD modules for the browser. Allows to split your codebase into multiple bundles, which can be loaded on demand. Support loaders to preprocess files, i.e. json, jsx, es7, css, less, ... and your custom stuff.

/*
	MIT License http://www.opensource.org/licenses/mit-license.php
	Author Tobias Koppers @sokra
*/

"use strict";

const HarmonyAcceptDependency = require("./HarmonyAcceptDependency");
const HarmonyAcceptImportDependency = require("./HarmonyAcceptImportDependency");
const HarmonyCompatibilityDependency = require("./HarmonyCompatibilityDependency");
const HarmonyExportExpressionDependency = require("./HarmonyExportExpressionDependency");
const HarmonyExportHeaderDependency = require("./HarmonyExportHeaderDependency");
const HarmonyExportImportedSpecifierDependency = require("./HarmonyExportImportedSpecifierDependency");
const HarmonyExportSpecifierDependency = require("./HarmonyExportSpecifierDependency");
const HarmonyImportSideEffectDependency = require("./HarmonyImportSideEffectDependency");
const HarmonyImportSpecifierDependency = require("./HarmonyImportSpecifierDependency");

const HarmonyDetectionParserPlugin = require("./HarmonyDetectionParserPlugin");
const HarmonyExportDependencyParserPlugin = require("./HarmonyExportDependencyParserPlugin");
const HarmonyImportDependencyParserPlugin = require("./HarmonyImportDependencyParserPlugin");
const HarmonyTopLevelThisParserPlugin = require("./HarmonyTopLevelThisParserPlugin");

/** @typedef {import("../Compiler")} Compiler */

class HarmonyModulesPlugin {
	constructor(options) {
		this.options = options;
	}

	/**
	 * Apply the plugin
	 * @param {Compiler} compiler the compiler instance
	 * @returns {void}
	 */
	apply(compiler) {
		compiler.hooks.compilation.tap(
			"HarmonyModulesPlugin",
			(compilation, { normalModuleFactory }) => {
				compilation.dependencyTemplates.set(
					HarmonyCompatibilityDependency,
					new HarmonyCompatibilityDependency.Template()
				);

				compilation.dependencyFactories.set(
					HarmonyImportSideEffectDependency,
					normalModuleFactory
				);
				compilation.dependencyTemplates.set(
					HarmonyImportSideEffectDependency,
					new HarmonyImportSideEffectDependency.Template()
				);

				compilation.dependencyFactories.set(
					HarmonyImportSpecifierDependency,
					normalModuleFactory
				);
				compilation.dependencyTemplates.set(
					HarmonyImportSpecifierDependency,
					new HarmonyImportSpecifierDependency.Template()
				);

				compilation.dependencyTemplates.set(
					HarmonyExportHeaderDependency,
					new HarmonyExportHeaderDependency.Template()
				);

				compilation.dependencyTemplates.set(
					HarmonyExportExpressionDependency,
					new HarmonyExportExpressionDependency.Template()
				);

				compilation.dependencyTemplates.set(
					HarmonyExportSpecifierDependency,
					new HarmonyExportSpecifierDependency.Template()
				);

				compilation.dependencyFactories.set(
					HarmonyExportImportedSpecifierDependency,
					normalModuleFactory
				);
				compilation.dependencyTemplates.set(
					HarmonyExportImportedSpecifierDependency,
					new HarmonyExportImportedSpecifierDependency.Template()
				);

				compilation.dependencyTemplates.set(
					HarmonyAcceptDependency,
					new HarmonyAcceptDependency.Template()
				);

				compilation.dependencyFactories.set(
					HarmonyAcceptImportDependency,
					normalModuleFactory
				);
				compilation.dependencyTemplates.set(
					HarmonyAcceptImportDependency,
					new HarmonyAcceptImportDependency.Template()
				);

				const handler = (parser, parserOptions) => {
					// TODO webpack 6: rename harmony to esm or module
					if (parserOptions.harmony !== undefined && !parserOptions.harmony)
						return;

					new HarmonyDetectionParserPlugin(this.options).apply(parser);
					new HarmonyImportDependencyParserPlugin(parserOptions).apply(parser);
					new HarmonyExportDependencyParserPlugin(parserOptions).apply(parser);
					new HarmonyTopLevelThisParserPlugin().apply(parser);
				};

				normalModuleFactory.hooks.parser
					.for("javascript/auto")
					.tap("HarmonyModulesPlugin", handler);
				normalModuleFactory.hooks.parser
					.for("javascript/esm")
					.tap("HarmonyModulesPlugin", handler);
			}
		);
	}
}
module.exports = HarmonyModulesPlugin;