first commit

app_vue/node_modules/webpack/lib/ConcatenationScope.js

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+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+"use strict";
+
+const {
+	DEFAULT_EXPORT,
+	NAMESPACE_OBJECT_EXPORT
+} = require("./util/concatenate");
+
+/** @typedef {import("./Module")} Module */
+/** @typedef {import("./optimize/ConcatenatedModule").ConcatenatedModuleInfo} ConcatenatedModuleInfo */
+/** @typedef {import("./optimize/ConcatenatedModule").ModuleInfo} ModuleInfo */
+
+const MODULE_REFERENCE_REGEXP =
+	/^__WEBPACK_MODULE_REFERENCE__(\d+)_([\da-f]+|ns)(_call)?(_directImport)?(?:_asiSafe(\d))?__$/;
+
+/**
+ * @typedef {object} ModuleReferenceOptions
+ * @property {string[]} ids the properties/exports of the module
+ * @property {boolean} call true, when this referenced export is called
+ * @property {boolean} directImport true, when this referenced export is directly imported (not via property access)
+ * @property {boolean | undefined} asiSafe if the position is ASI safe or unknown
+ */
+
+class ConcatenationScope {
+	/**
+	 * @param {ModuleInfo[] | Map<Module, ModuleInfo>} modulesMap all module info by module
+	 * @param {ConcatenatedModuleInfo} currentModule the current module info
+	 */
+	constructor(modulesMap, currentModule) {
+		this._currentModule = currentModule;
+		if (Array.isArray(modulesMap)) {
+			const map = new Map();
+			for (const info of modulesMap) {
+				map.set(info.module, info);
+			}
+			modulesMap = map;
+		}
+		this._modulesMap = modulesMap;
+	}
+
+	/**
+	 * @param {Module} module the referenced module
+	 * @returns {boolean} true, when it's in the scope
+	 */
+	isModuleInScope(module) {
+		return this._modulesMap.has(module);
+	}
+
+	/**
+	 * @param {string} exportName name of the export
+	 * @param {string} symbol identifier of the export in source code
+	 */
+	registerExport(exportName, symbol) {
+		if (!this._currentModule.exportMap) {
+			this._currentModule.exportMap = new Map();
+		}
+		if (!this._currentModule.exportMap.has(exportName)) {
+			this._currentModule.exportMap.set(exportName, symbol);
+		}
+	}
+
+	/**
+	 * @param {string} exportName name of the export
+	 * @param {string} expression expression to be used
+	 */
+	registerRawExport(exportName, expression) {
+		if (!this._currentModule.rawExportMap) {
+			this._currentModule.rawExportMap = new Map();
+		}
+		if (!this._currentModule.rawExportMap.has(exportName)) {
+			this._currentModule.rawExportMap.set(exportName, expression);
+		}
+	}
+
+	/**
+	 * @param {string} symbol identifier of the export in source code
+	 */
+	registerNamespaceExport(symbol) {
+		this._currentModule.namespaceExportSymbol = symbol;
+	}
+
+	/**
+	 * @param {Module} module the referenced module
+	 * @param {Partial<ModuleReferenceOptions>} options options
+	 * @returns {string} the reference as identifier
+	 */
+	createModuleReference(
+		module,
+		{ ids = undefined, call = false, directImport = false, asiSafe = false }
+	) {
+		const info = /** @type {ModuleInfo} */ (this._modulesMap.get(module));
+		const callFlag = call ? "_call" : "";
+		const directImportFlag = directImport ? "_directImport" : "";
+		const asiSafeFlag = asiSafe
+			? "_asiSafe1"
+			: asiSafe === false
+				? "_asiSafe0"
+				: "";
+		const exportData = ids
+			? Buffer.from(JSON.stringify(ids), "utf-8").toString("hex")
+			: "ns";
+		// a "._" is appended to allow "delete ...", which would cause a SyntaxError in strict mode
+		return `__WEBPACK_MODULE_REFERENCE__${info.index}_${exportData}${callFlag}${directImportFlag}${asiSafeFlag}__._`;
+	}
+
+	/**
+	 * @param {string} name the identifier
+	 * @returns {boolean} true, when it's an module reference
+	 */
+	static isModuleReference(name) {
+		return MODULE_REFERENCE_REGEXP.test(name);
+	}
+
+	/**
+	 * @param {string} name the identifier
+	 * @returns {ModuleReferenceOptions & { index: number } | null} parsed options and index
+	 */
+	static matchModuleReference(name) {
+		const match = MODULE_REFERENCE_REGEXP.exec(name);
+		if (!match) return null;
+		const index = Number(match[1]);
+		const asiSafe = match[5];
+		return {
+			index,
+			ids:
+				match[2] === "ns"
+					? []
+					: JSON.parse(Buffer.from(match[2], "hex").toString("utf-8")),
+			call: Boolean(match[3]),
+			directImport: Boolean(match[4]),
+			asiSafe: asiSafe ? asiSafe === "1" : undefined
+		};
+	}
+}
+
+ConcatenationScope.DEFAULT_EXPORT = DEFAULT_EXPORT;
+ConcatenationScope.NAMESPACE_OBJECT_EXPORT = NAMESPACE_OBJECT_EXPORT;
+
+module.exports = ConcatenationScope;