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app_vue/node_modules/webpack/lib/dependencies/CommonJsExportsDependency.js

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+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+"use strict";
+
+const InitFragment = require("../InitFragment");
+const makeSerializable = require("../util/makeSerializable");
+const propertyAccess = require("../util/propertyAccess");
+const { handleDependencyBase } = require("./CommonJsDependencyHelpers");
+const NullDependency = require("./NullDependency");
+
+/** @typedef {import("webpack-sources").ReplaceSource} ReplaceSource */
+/** @typedef {import("../Dependency")} Dependency */
+/** @typedef {import("../Dependency").ExportsSpec} ExportsSpec */
+/** @typedef {import("../DependencyTemplate").DependencyTemplateContext} DependencyTemplateContext */
+/** @typedef {import("../ModuleGraph")} ModuleGraph */
+/** @typedef {import("../javascript/JavascriptParser").Range} Range */
+/** @typedef {import("../serialization/ObjectMiddleware").ObjectDeserializerContext} ObjectDeserializerContext */
+/** @typedef {import("../serialization/ObjectMiddleware").ObjectSerializerContext} ObjectSerializerContext */
+/** @typedef {import("./CommonJsDependencyHelpers").CommonJSDependencyBaseKeywords} CommonJSDependencyBaseKeywords */
+
+const EMPTY_OBJECT = {};
+
+class CommonJsExportsDependency extends NullDependency {
+	/**
+	 * @param {Range} range range
+	 * @param {Range | null} valueRange value range
+	 * @param {CommonJSDependencyBaseKeywords} base base
+	 * @param {string[]} names names
+	 */
+	constructor(range, valueRange, base, names) {
+		super();
+		this.range = range;
+		this.valueRange = valueRange;
+		this.base = base;
+		this.names = names;
+	}
+
+	get type() {
+		return "cjs exports";
+	}
+
+	/**
+	 * Returns the exported names
+	 * @param {ModuleGraph} moduleGraph module graph
+	 * @returns {ExportsSpec | undefined} export names
+	 */
+	getExports(moduleGraph) {
+		const name = this.names[0];
+		return {
+			exports: [
+				{
+					name,
+					// we can't mangle names that are in an empty object
+					// because one could access the prototype property
+					// when export isn't set yet
+					canMangle: !(name in EMPTY_OBJECT)
+				}
+			],
+			dependencies: undefined
+		};
+	}
+
+	/**
+	 * @param {ObjectSerializerContext} context context
+	 */
+	serialize(context) {
+		const { write } = context;
+		write(this.range);
+		write(this.valueRange);
+		write(this.base);
+		write(this.names);
+		super.serialize(context);
+	}
+
+	/**
+	 * @param {ObjectDeserializerContext} context context
+	 */
+	deserialize(context) {
+		const { read } = context;
+		this.range = read();
+		this.valueRange = read();
+		this.base = read();
+		this.names = read();
+		super.deserialize(context);
+	}
+}
+
+makeSerializable(
+	CommonJsExportsDependency,
+	"webpack/lib/dependencies/CommonJsExportsDependency"
+);
+
+CommonJsExportsDependency.Template = class CommonJsExportsDependencyTemplate extends (
+	NullDependency.Template
+) {
+	/**
+	 * @param {Dependency} dependency the dependency for which the template should be applied
+	 * @param {ReplaceSource} source the current replace source which can be modified
+	 * @param {DependencyTemplateContext} templateContext the context object
+	 * @returns {void}
+	 */
+	apply(
+		dependency,
+		source,
+		{ module, moduleGraph, initFragments, runtimeRequirements, runtime }
+	) {
+		const dep = /** @type {CommonJsExportsDependency} */ (dependency);
+		const used = moduleGraph
+			.getExportsInfo(module)
+			.getUsedName(dep.names, runtime);
+
+		const [type, base] = handleDependencyBase(
+			dep.base,
+			module,
+			runtimeRequirements
+		);
+
+		switch (type) {
+			case "expression":
+				if (!used) {
+					initFragments.push(
+						new InitFragment(
+							"var __webpack_unused_export__;\n",
+							InitFragment.STAGE_CONSTANTS,
+							0,
+							"__webpack_unused_export__"
+						)
+					);
+					source.replace(
+						dep.range[0],
+						dep.range[1] - 1,
+						"__webpack_unused_export__"
+					);
+					return;
+				}
+				source.replace(
+					dep.range[0],
+					dep.range[1] - 1,
+					`${base}${propertyAccess(used)}`
+				);
+				return;
+			case "Object.defineProperty":
+				if (!used) {
+					initFragments.push(
+						new InitFragment(
+							"var __webpack_unused_export__;\n",
+							InitFragment.STAGE_CONSTANTS,
+							0,
+							"__webpack_unused_export__"
+						)
+					);
+					source.replace(
+						dep.range[0],
+						/** @type {Range} */ (dep.valueRange)[0] - 1,
+						"__webpack_unused_export__ = ("
+					);
+					source.replace(
+						/** @type {Range} */ (dep.valueRange)[1],
+						dep.range[1] - 1,
+						")"
+					);
+					return;
+				}
+				source.replace(
+					dep.range[0],
+					/** @type {Range} */ (dep.valueRange)[0] - 1,
+					`Object.defineProperty(${base}${propertyAccess(
+						used.slice(0, -1)
+					)}, ${JSON.stringify(used[used.length - 1])}, (`
+				);
+				source.replace(
+					/** @type {Range} */ (dep.valueRange)[1],
+					dep.range[1] - 1,
+					"))"
+				);
+		}
+	}
+};
+
+module.exports = CommonJsExportsDependency;