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Packs ECMAScript/CommonJs/AMD modules for the browser. Allows you to split your codebase into multiple bundles, which can be loaded on demand. Supports loaders to preprocess files, i.e. json, jsx, es7, css, less, ... and your custom stuff.
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/*
	MIT License http://www.opensource.org/licenses/mit-license.php
	Author Tobias Koppers @sokra
*/

"use strict";

const {
	JAVASCRIPT_MODULE_TYPE_AUTO,
	JAVASCRIPT_MODULE_TYPE_DYNAMIC
} = require("../ModuleTypeConstants");
const RuntimeGlobals = require("../RuntimeGlobals");
const {
	approve,
	evaluateToIdentifier,
	evaluateToString,
	toConstantDependency
} = require("../javascript/JavascriptParserHelpers");

const AMDDefineDependency = require("./AMDDefineDependency");
const AMDDefineDependencyParserPlugin = require("./AMDDefineDependencyParserPlugin");
const AMDRequireArrayDependency = require("./AMDRequireArrayDependency");
const AMDRequireContextDependency = require("./AMDRequireContextDependency");
const AMDRequireDependenciesBlockParserPlugin = require("./AMDRequireDependenciesBlockParserPlugin");
const AMDRequireDependency = require("./AMDRequireDependency");
const AMDRequireItemDependency = require("./AMDRequireItemDependency");
const {
	AMDDefineRuntimeModule,
	AMDOptionsRuntimeModule
} = require("./AMDRuntimeModules");
const ConstDependency = require("./ConstDependency");
const LocalModuleDependency = require("./LocalModuleDependency");
const UnsupportedDependency = require("./UnsupportedDependency");

/** @typedef {import("../../declarations/WebpackOptions").JavascriptParserOptions} JavascriptParserOptions */
/** @typedef {import("../../declarations/WebpackOptions").ModuleOptionsNormalized} ModuleOptions */
/** @typedef {import("../Compiler")} Compiler */
/** @typedef {import("../Dependency").DependencyLocation} DependencyLocation */
/** @typedef {import("../javascript/JavascriptParser")} Parser */
/** @typedef {import("../javascript/JavascriptParser").Range} Range */

const PLUGIN_NAME = "AMDPlugin";

class AMDPlugin {
	/**
	 * @param {Record} amdOptions the AMD options
	 */
	constructor(amdOptions) {
		this.amdOptions = amdOptions;
	}

	/**
	 * Apply the plugin
	 * @param {Compiler} compiler the compiler instance
	 * @returns {void}
	 */
	apply(compiler) {
		const amdOptions = this.amdOptions;
		compiler.hooks.compilation.tap(
			PLUGIN_NAME,
			(compilation, { contextModuleFactory, normalModuleFactory }) => {
				compilation.dependencyTemplates.set(
					AMDRequireDependency,
					new AMDRequireDependency.Template()
				);

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

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

				compilation.dependencyFactories.set(
					AMDRequireContextDependency,
					contextModuleFactory
				);
				compilation.dependencyTemplates.set(
					AMDRequireContextDependency,
					new AMDRequireContextDependency.Template()
				);

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

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

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

				compilation.hooks.runtimeRequirementInModule
					.for(RuntimeGlobals.amdDefine)
					.tap(PLUGIN_NAME, (module, set) => {
						set.add(RuntimeGlobals.require);
					});

				compilation.hooks.runtimeRequirementInModule
					.for(RuntimeGlobals.amdOptions)
					.tap(PLUGIN_NAME, (module, set) => {
						set.add(RuntimeGlobals.requireScope);
					});

				compilation.hooks.runtimeRequirementInTree
					.for(RuntimeGlobals.amdDefine)
					.tap(PLUGIN_NAME, (chunk, set) => {
						compilation.addRuntimeModule(chunk, new AMDDefineRuntimeModule());
					});

				compilation.hooks.runtimeRequirementInTree
					.for(RuntimeGlobals.amdOptions)
					.tap(PLUGIN_NAME, (chunk, set) => {
						compilation.addRuntimeModule(
							chunk,
							new AMDOptionsRuntimeModule(amdOptions)
						);
					});

				/**
				 * @param {Parser} parser parser parser
				 * @param {JavascriptParserOptions} parserOptions parserOptions
				 * @returns {void}
				 */
				const handler = (parser, parserOptions) => {
					if (parserOptions.amd !== undefined && !parserOptions.amd) return;

					/**
					 * @param {string} optionExpr option expression
					 * @param {string} rootName root name
					 * @param {function(): TODO} getMembers callback
					 */
					const tapOptionsHooks = (optionExpr, rootName, getMembers) => {
						parser.hooks.expression
							.for(optionExpr)
							.tap(
								PLUGIN_NAME,
								toConstantDependency(parser, RuntimeGlobals.amdOptions, [
									RuntimeGlobals.amdOptions
								])
							);
						parser.hooks.evaluateIdentifier
							.for(optionExpr)
							.tap(
								PLUGIN_NAME,
								evaluateToIdentifier(optionExpr, rootName, getMembers, true)
							);
						parser.hooks.evaluateTypeof
							.for(optionExpr)
							.tap(PLUGIN_NAME, evaluateToString("object"));
						parser.hooks.typeof
							.for(optionExpr)
							.tap(
								PLUGIN_NAME,
								toConstantDependency(parser, JSON.stringify("object"))
							);
					};

					new AMDRequireDependenciesBlockParserPlugin(parserOptions).apply(
						parser
					);
					new AMDDefineDependencyParserPlugin(parserOptions).apply(parser);

					tapOptionsHooks("define.amd", "define", () => "amd");
					tapOptionsHooks("require.amd", "require", () => ["amd"]);
					tapOptionsHooks(
						"__webpack_amd_options__",
						"__webpack_amd_options__",
						() => []
					);

					parser.hooks.expression.for("define").tap(PLUGIN_NAME, expr => {
						const dep = new ConstDependency(
							RuntimeGlobals.amdDefine,
							/** @type {Range} */ (expr.range),
							[RuntimeGlobals.amdDefine]
						);
						dep.loc = /** @type {DependencyLocation} */ (expr.loc);
						parser.state.module.addPresentationalDependency(dep);
						return true;
					});
					parser.hooks.typeof
						.for("define")
						.tap(
							PLUGIN_NAME,
							toConstantDependency(parser, JSON.stringify("function"))
						);
					parser.hooks.evaluateTypeof
						.for("define")
						.tap(PLUGIN_NAME, evaluateToString("function"));
					parser.hooks.canRename.for("define").tap(PLUGIN_NAME, approve);
					parser.hooks.rename.for("define").tap(PLUGIN_NAME, expr => {
						const dep = new ConstDependency(
							RuntimeGlobals.amdDefine,
							/** @type {Range} */ (expr.range),
							[RuntimeGlobals.amdDefine]
						);
						dep.loc = /** @type {DependencyLocation} */ (expr.loc);
						parser.state.module.addPresentationalDependency(dep);
						return false;
					});
					parser.hooks.typeof
						.for("require")
						.tap(
							PLUGIN_NAME,
							toConstantDependency(parser, JSON.stringify("function"))
						);
					parser.hooks.evaluateTypeof
						.for("require")
						.tap(PLUGIN_NAME, evaluateToString("function"));
				};

				normalModuleFactory.hooks.parser
					.for(JAVASCRIPT_MODULE_TYPE_AUTO)
					.tap(PLUGIN_NAME, handler);
				normalModuleFactory.hooks.parser
					.for(JAVASCRIPT_MODULE_TYPE_DYNAMIC)
					.tap(PLUGIN_NAME, handler);
			}
		);
	}
}

module.exports = AMDPlugin;