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

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+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+"use strict";
+
+const { UsageState } = require("../ExportsInfo");
+const makeSerializable = require("../util/makeSerializable");
+const NullDependency = require("./NullDependency");
+
+/** @typedef {import("webpack-sources").ReplaceSource} ReplaceSource */
+/** @typedef {import("../ChunkGraph")} ChunkGraph */
+/** @typedef {import("../Dependency")} Dependency */
+/** @typedef {import("../Dependency").UpdateHashContext} UpdateHashContext */
+/** @typedef {import("../DependencyTemplate").DependencyTemplateContext} DependencyTemplateContext */
+/** @typedef {import("../Module")} Module */
+/** @typedef {import("../ModuleGraph")} ModuleGraph */
+/** @typedef {import("../javascript/JavascriptParser").Range} Range */
+/** @typedef {import("../serialization/ObjectMiddleware").ObjectDeserializerContext} ObjectDeserializerContext */
+/** @typedef {import("../serialization/ObjectMiddleware").ObjectSerializerContext} ObjectSerializerContext */
+/** @typedef {import("../util/Hash")} Hash */
+/** @typedef {import("../util/runtime").RuntimeSpec} RuntimeSpec */
+
+/**
+ * @template T
+ * @typedef {import("../util/SortableSet")<T>} SortableSet
+ */
+
+/**
+ * @param {ModuleGraph} moduleGraph the module graph
+ * @param {Module} module the module
+ * @param {string[] | null} _exportName name of the export if any
+ * @param {string | null} property name of the requested property
+ * @param {RuntimeSpec} runtime for which runtime
+ * @returns {undefined | null | number | boolean | string[] | SortableSet<string>} value of the property
+ */
+const getProperty = (moduleGraph, module, _exportName, property, runtime) => {
+	if (!_exportName) {
+		switch (property) {
+			case "usedExports": {
+				const usedExports = moduleGraph
+					.getExportsInfo(module)
+					.getUsedExports(runtime);
+				if (
+					typeof usedExports === "boolean" ||
+					usedExports === undefined ||
+					usedExports === null
+				) {
+					return usedExports;
+				}
+				return Array.from(usedExports).sort();
+			}
+		}
+	}
+	const exportName = /** @type {string[]} */ (_exportName);
+	switch (property) {
+		case "canMangle": {
+			const exportsInfo = moduleGraph.getExportsInfo(module);
+			const exportInfo = exportsInfo.getReadOnlyExportInfoRecursive(exportName);
+			if (exportInfo) return exportInfo.canMangle;
+			return exportsInfo.otherExportsInfo.canMangle;
+		}
+		case "used":
+			return (
+				moduleGraph.getExportsInfo(module).getUsed(exportName, runtime) !==
+				UsageState.Unused
+			);
+		case "useInfo": {
+			const state = moduleGraph
+				.getExportsInfo(module)
+				.getUsed(exportName, runtime);
+			switch (state) {
+				case UsageState.Used:
+				case UsageState.OnlyPropertiesUsed:
+					return true;
+				case UsageState.Unused:
+					return false;
+				case UsageState.NoInfo:
+					return;
+				case UsageState.Unknown:
+					return null;
+				default:
+					throw new Error(`Unexpected UsageState ${state}`);
+			}
+		}
+		case "provideInfo":
+			return moduleGraph.getExportsInfo(module).isExportProvided(exportName);
+	}
+};
+
+class ExportsInfoDependency extends NullDependency {
+	/**
+	 * @param {Range} range range
+	 * @param {string[] | null} exportName export name
+	 * @param {string | null} property property
+	 */
+	constructor(range, exportName, property) {
+		super();
+		this.range = range;
+		this.exportName = exportName;
+		this.property = property;
+	}
+
+	/**
+	 * @param {ObjectSerializerContext} context context
+	 */
+	serialize(context) {
+		const { write } = context;
+		write(this.range);
+		write(this.exportName);
+		write(this.property);
+		super.serialize(context);
+	}
+
+	/**
+	 * @param {ObjectDeserializerContext} context context
+	 * @returns {ExportsInfoDependency} ExportsInfoDependency
+	 */
+	static deserialize(context) {
+		const obj = new ExportsInfoDependency(
+			context.read(),
+			context.read(),
+			context.read()
+		);
+		obj.deserialize(context);
+		return obj;
+	}
+}
+
+makeSerializable(
+	ExportsInfoDependency,
+	"webpack/lib/dependencies/ExportsInfoDependency"
+);
+
+ExportsInfoDependency.Template = class ExportsInfoDependencyTemplate 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, runtime }) {
+		const dep = /** @type {ExportsInfoDependency} */ (dependency);
+
+		const value = getProperty(
+			moduleGraph,
+			module,
+			dep.exportName,
+			dep.property,
+			runtime
+		);
+		source.replace(
+			dep.range[0],
+			dep.range[1] - 1,
+			value === undefined ? "undefined" : JSON.stringify(value)
+		);
+	}
+};
+
+module.exports = ExportsInfoDependency;