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node_modules/webpack/lib/dependencies/HarmonyImportSpecifierDependency.js

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+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+"use strict";
+
+const Dependency = require("../Dependency");
+const {
+	getDependencyUsedByExportsCondition
+} = require("../optimize/InnerGraph");
+const makeSerializable = require("../util/makeSerializable");
+const propertyAccess = require("../util/propertyAccess");
+const HarmonyImportDependency = require("./HarmonyImportDependency");
+
+/** @typedef {import("webpack-sources").ReplaceSource} ReplaceSource */
+/** @typedef {import("../ChunkGraph")} ChunkGraph */
+/** @typedef {import("../Dependency").ExportsSpec} ExportsSpec */
+/** @typedef {import("../Dependency").ReferencedExport} ReferencedExport */
+/** @typedef {import("../Dependency").UpdateHashContext} UpdateHashContext */
+/** @typedef {import("../DependencyTemplate").DependencyTemplateContext} DependencyTemplateContext */
+/** @typedef {import("../ModuleGraph")} ModuleGraph */
+/** @typedef {import("../ModuleGraphConnection")} ModuleGraphConnection */
+/** @typedef {import("../ModuleGraphConnection").ConnectionState} ConnectionState */
+/** @typedef {import("../WebpackError")} WebpackError */
+/** @typedef {import("../util/Hash")} Hash */
+/** @typedef {import("../util/runtime").RuntimeSpec} RuntimeSpec */
+
+const idsSymbol = Symbol("HarmonyImportSpecifierDependency.ids");
+
+const { ExportPresenceModes } = HarmonyImportDependency;
+
+class HarmonyImportSpecifierDependency extends HarmonyImportDependency {
+	constructor(
+		request,
+		sourceOrder,
+		ids,
+		name,
+		range,
+		exportPresenceMode,
+		assertions
+	) {
+		super(request, sourceOrder, assertions);
+		this.ids = ids;
+		this.name = name;
+		this.range = range;
+		this.exportPresenceMode = exportPresenceMode;
+		this.namespaceObjectAsContext = false;
+		this.call = undefined;
+		this.directImport = undefined;
+		this.shorthand = undefined;
+		this.asiSafe = undefined;
+		/** @type {Set<string> | boolean} */
+		this.usedByExports = undefined;
+	}
+
+	// TODO webpack 6 remove
+	get id() {
+		throw new Error("id was renamed to ids and type changed to string[]");
+	}
+
+	// TODO webpack 6 remove
+	getId() {
+		throw new Error("id was renamed to ids and type changed to string[]");
+	}
+
+	// TODO webpack 6 remove
+	setId() {
+		throw new Error("id was renamed to ids and type changed to string[]");
+	}
+
+	get type() {
+		return "harmony import specifier";
+	}
+
+	/**
+	 * @param {ModuleGraph} moduleGraph the module graph
+	 * @returns {string[]} the imported ids
+	 */
+	getIds(moduleGraph) {
+		const meta = moduleGraph.getMetaIfExisting(this);
+		if (meta === undefined) return this.ids;
+		const ids = meta[idsSymbol];
+		return ids !== undefined ? ids : this.ids;
+	}
+
+	/**
+	 * @param {ModuleGraph} moduleGraph the module graph
+	 * @param {string[]} ids the imported ids
+	 * @returns {void}
+	 */
+	setIds(moduleGraph, ids) {
+		moduleGraph.getMeta(this)[idsSymbol] = ids;
+	}
+
+	/**
+	 * @param {ModuleGraph} moduleGraph module graph
+	 * @returns {null | false | function(ModuleGraphConnection, RuntimeSpec): ConnectionState} function to determine if the connection is active
+	 */
+	getCondition(moduleGraph) {
+		return getDependencyUsedByExportsCondition(
+			this,
+			this.usedByExports,
+			moduleGraph
+		);
+	}
+
+	/**
+	 * @param {ModuleGraph} moduleGraph the module graph
+	 * @returns {ConnectionState} how this dependency connects the module to referencing modules
+	 */
+	getModuleEvaluationSideEffectsState(moduleGraph) {
+		return false;
+	}
+
+	/**
+	 * Returns list of exports referenced by this dependency
+	 * @param {ModuleGraph} moduleGraph module graph
+	 * @param {RuntimeSpec} runtime the runtime for which the module is analysed
+	 * @returns {(string[] | ReferencedExport)[]} referenced exports
+	 */
+	getReferencedExports(moduleGraph, runtime) {
+		let ids = this.getIds(moduleGraph);
+		if (ids.length === 0) return Dependency.EXPORTS_OBJECT_REFERENCED;
+		let namespaceObjectAsContext = this.namespaceObjectAsContext;
+		if (ids[0] === "default") {
+			const selfModule = moduleGraph.getParentModule(this);
+			const importedModule = moduleGraph.getModule(this);
+			switch (
+				importedModule.getExportsType(
+					moduleGraph,
+					selfModule.buildMeta.strictHarmonyModule
+				)
+			) {
+				case "default-only":
+				case "default-with-named":
+					if (ids.length === 1) return Dependency.EXPORTS_OBJECT_REFERENCED;
+					ids = ids.slice(1);
+					namespaceObjectAsContext = true;
+					break;
+				case "dynamic":
+					return Dependency.EXPORTS_OBJECT_REFERENCED;
+			}
+		}
+
+		if (
+			this.call &&
+			!this.directImport &&
+			(namespaceObjectAsContext || ids.length > 1)
+		) {
+			if (ids.length === 1) return Dependency.EXPORTS_OBJECT_REFERENCED;
+			ids = ids.slice(0, -1);
+		}
+
+		return [ids];
+	}
+
+	/**
+	 * @param {ModuleGraph} moduleGraph module graph
+	 * @returns {number} effective mode
+	 */
+	_getEffectiveExportPresenceLevel(moduleGraph) {
+		if (this.exportPresenceMode !== ExportPresenceModes.AUTO)
+			return this.exportPresenceMode;
+		return moduleGraph.getParentModule(this).buildMeta.strictHarmonyModule
+			? ExportPresenceModes.ERROR
+			: ExportPresenceModes.WARN;
+	}
+
+	/**
+	 * Returns warnings
+	 * @param {ModuleGraph} moduleGraph module graph
+	 * @returns {WebpackError[]} warnings
+	 */
+	getWarnings(moduleGraph) {
+		const exportsPresence = this._getEffectiveExportPresenceLevel(moduleGraph);
+		if (exportsPresence === ExportPresenceModes.WARN) {
+			return this._getErrors(moduleGraph);
+		}
+		return null;
+	}
+
+	/**
+	 * Returns errors
+	 * @param {ModuleGraph} moduleGraph module graph
+	 * @returns {WebpackError[]} errors
+	 */
+	getErrors(moduleGraph) {
+		const exportsPresence = this._getEffectiveExportPresenceLevel(moduleGraph);
+		if (exportsPresence === ExportPresenceModes.ERROR) {
+			return this._getErrors(moduleGraph);
+		}
+		return null;
+	}
+
+	/**
+	 * @param {ModuleGraph} moduleGraph module graph
+	 * @returns {WebpackError[] | undefined} errors
+	 */
+	_getErrors(moduleGraph) {
+		const ids = this.getIds(moduleGraph);
+		return this.getLinkingErrors(
+			moduleGraph,
+			ids,
+			`(imported as '${this.name}')`
+		);
+	}
+
+	/**
+	 * implement this method to allow the occurrence order plugin to count correctly
+	 * @returns {number} count how often the id is used in this dependency
+	 */
+	getNumberOfIdOccurrences() {
+		return 0;
+	}
+
+	serialize(context) {
+		const { write } = context;
+		write(this.ids);
+		write(this.name);
+		write(this.range);
+		write(this.exportPresenceMode);
+		write(this.namespaceObjectAsContext);
+		write(this.call);
+		write(this.directImport);
+		write(this.shorthand);
+		write(this.asiSafe);
+		write(this.usedByExports);
+		super.serialize(context);
+	}
+
+	deserialize(context) {
+		const { read } = context;
+		this.ids = read();
+		this.name = read();
+		this.range = read();
+		this.exportPresenceMode = read();
+		this.namespaceObjectAsContext = read();
+		this.call = read();
+		this.directImport = read();
+		this.shorthand = read();
+		this.asiSafe = read();
+		this.usedByExports = read();
+		super.deserialize(context);
+	}
+}
+
+makeSerializable(
+	HarmonyImportSpecifierDependency,
+	"webpack/lib/dependencies/HarmonyImportSpecifierDependency"
+);
+
+HarmonyImportSpecifierDependency.Template = class HarmonyImportSpecifierDependencyTemplate extends (
+	HarmonyImportDependency.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, templateContext) {
+		const dep = /** @type {HarmonyImportSpecifierDependency} */ (dependency);
+		const { moduleGraph, runtime } = templateContext;
+		const connection = moduleGraph.getConnection(dep);
+		// Skip rendering depending when dependency is conditional
+		if (connection && !connection.isTargetActive(runtime)) return;
+
+		const ids = dep.getIds(moduleGraph);
+		const exportExpr = this._getCodeForIds(dep, source, templateContext, ids);
+		const range = dep.range;
+		if (dep.shorthand) {
+			source.insert(range[1], `: ${exportExpr}`);
+		} else {
+			source.replace(range[0], range[1] - 1, exportExpr);
+		}
+	}
+
+	/**
+	 * @param {HarmonyImportSpecifierDependency} dep dependency
+	 * @param {ReplaceSource} source source
+	 * @param {DependencyTemplateContext} templateContext context
+	 * @param {string[]} ids ids
+	 * @returns {string} generated code
+	 */
+	_getCodeForIds(dep, source, templateContext, ids) {
+		const { moduleGraph, module, runtime, concatenationScope } =
+			templateContext;
+		const connection = moduleGraph.getConnection(dep);
+		let exportExpr;
+		if (
+			connection &&
+			concatenationScope &&
+			concatenationScope.isModuleInScope(connection.module)
+		) {
+			if (ids.length === 0) {
+				exportExpr = concatenationScope.createModuleReference(
+					connection.module,
+					{
+						asiSafe: dep.asiSafe
+					}
+				);
+			} else if (dep.namespaceObjectAsContext && ids.length === 1) {
+				exportExpr =
+					concatenationScope.createModuleReference(connection.module, {
+						asiSafe: dep.asiSafe
+					}) + propertyAccess(ids);
+			} else {
+				exportExpr = concatenationScope.createModuleReference(
+					connection.module,
+					{
+						ids,
+						call: dep.call,
+						directImport: dep.directImport,
+						asiSafe: dep.asiSafe
+					}
+				);
+			}
+		} else {
+			super.apply(dep, source, templateContext);
+
+			const { runtimeTemplate, initFragments, runtimeRequirements } =
+				templateContext;
+
+			exportExpr = runtimeTemplate.exportFromImport({
+				moduleGraph,
+				module: moduleGraph.getModule(dep),
+				request: dep.request,
+				exportName: ids,
+				originModule: module,
+				asiSafe: dep.shorthand ? true : dep.asiSafe,
+				isCall: dep.call,
+				callContext: !dep.directImport,
+				defaultInterop: true,
+				importVar: dep.getImportVar(moduleGraph),
+				initFragments,
+				runtime,
+				runtimeRequirements
+			});
+		}
+		return exportExpr;
+	}
+};
+
+module.exports = HarmonyImportSpecifierDependency;