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

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+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+"use strict";
+
+const { pathToFileURL } = require("url");
+const AsyncDependenciesBlock = require("../AsyncDependenciesBlock");
+const CommentCompilationWarning = require("../CommentCompilationWarning");
+const {
+	JAVASCRIPT_MODULE_TYPE_AUTO,
+	JAVASCRIPT_MODULE_TYPE_ESM
+} = require("../ModuleTypeConstants");
+const UnsupportedFeatureWarning = require("../UnsupportedFeatureWarning");
+const EnableChunkLoadingPlugin = require("../javascript/EnableChunkLoadingPlugin");
+const { equals } = require("../util/ArrayHelpers");
+const createHash = require("../util/createHash");
+const { contextify } = require("../util/identifier");
+const EnableWasmLoadingPlugin = require("../wasm/EnableWasmLoadingPlugin");
+const ConstDependency = require("./ConstDependency");
+const CreateScriptUrlDependency = require("./CreateScriptUrlDependency");
+const {
+	harmonySpecifierTag
+} = require("./HarmonyImportDependencyParserPlugin");
+const WorkerDependency = require("./WorkerDependency");
+
+/** @typedef {import("estree").CallExpression} CallExpression */
+/** @typedef {import("estree").Expression} Expression */
+/** @typedef {import("estree").Identifier} Identifier */
+/** @typedef {import("estree").MemberExpression} MemberExpression */
+/** @typedef {import("estree").ObjectExpression} ObjectExpression */
+/** @typedef {import("estree").Pattern} Pattern */
+/** @typedef {import("estree").Property} Property */
+/** @typedef {import("estree").SpreadElement} SpreadElement */
+/** @typedef {import("../../declarations/WebpackOptions").ChunkLoading} ChunkLoading */
+/** @typedef {import("../../declarations/WebpackOptions").HashFunction} HashFunction */
+/** @typedef {import("../../declarations/WebpackOptions").JavascriptParserOptions} JavascriptParserOptions */
+/** @typedef {import("../../declarations/WebpackOptions").OutputModule} OutputModule */
+/** @typedef {import("../../declarations/WebpackOptions").WasmLoading} WasmLoading */
+/** @typedef {import("../../declarations/WebpackOptions").WorkerPublicPath} WorkerPublicPath */
+/** @typedef {import("../Compiler")} Compiler */
+/** @typedef {import("../Dependency").DependencyLocation} DependencyLocation */
+/** @typedef {import("../Entrypoint").EntryOptions} EntryOptions */
+/** @typedef {import("../NormalModule")} NormalModule */
+/** @typedef {import("../Parser").ParserState} ParserState */
+/** @typedef {import("../javascript/BasicEvaluatedExpression")} BasicEvaluatedExpression */
+/** @typedef {import("../javascript/JavascriptParser")} JavascriptParser */
+/** @typedef {import("../javascript/JavascriptParser")} Parser */
+/** @typedef {import("../javascript/JavascriptParser").Range} Range */
+/** @typedef {import("./HarmonyImportDependencyParserPlugin").HarmonySettings} HarmonySettings */
+
+/**
+ * @param {NormalModule} module module
+ * @returns {string} url
+ */
+const getUrl = module => pathToFileURL(module.resource).toString();
+
+const WorkerSpecifierTag = Symbol("worker specifier tag");
+
+const DEFAULT_SYNTAX = [
+	"Worker",
+	"SharedWorker",
+	"navigator.serviceWorker.register()",
+	"Worker from worker_threads"
+];
+
+/** @type {WeakMap<ParserState, number>} */
+const workerIndexMap = new WeakMap();
+
+const PLUGIN_NAME = "WorkerPlugin";
+
+class WorkerPlugin {
+	/**
+	 * @param {ChunkLoading=} chunkLoading chunk loading
+	 * @param {WasmLoading=} wasmLoading wasm loading
+	 * @param {OutputModule=} module output module
+	 * @param {WorkerPublicPath=} workerPublicPath worker public path
+	 */
+	constructor(chunkLoading, wasmLoading, module, workerPublicPath) {
+		this._chunkLoading = chunkLoading;
+		this._wasmLoading = wasmLoading;
+		this._module = module;
+		this._workerPublicPath = workerPublicPath;
+	}
+
+	/**
+	 * Apply the plugin
+	 * @param {Compiler} compiler the compiler instance
+	 * @returns {void}
+	 */
+	apply(compiler) {
+		if (this._chunkLoading) {
+			new EnableChunkLoadingPlugin(this._chunkLoading).apply(compiler);
+		}
+		if (this._wasmLoading) {
+			new EnableWasmLoadingPlugin(this._wasmLoading).apply(compiler);
+		}
+		const cachedContextify = contextify.bindContextCache(
+			compiler.context,
+			compiler.root
+		);
+		compiler.hooks.thisCompilation.tap(
+			PLUGIN_NAME,
+			(compilation, { normalModuleFactory }) => {
+				compilation.dependencyFactories.set(
+					WorkerDependency,
+					normalModuleFactory
+				);
+				compilation.dependencyTemplates.set(
+					WorkerDependency,
+					new WorkerDependency.Template()
+				);
+				compilation.dependencyTemplates.set(
+					CreateScriptUrlDependency,
+					new CreateScriptUrlDependency.Template()
+				);
+
+				/**
+				 * @param {JavascriptParser} parser the parser
+				 * @param {Expression} expr expression
+				 * @returns {[string, Range] | void} parsed
+				 */
+				const parseModuleUrl = (parser, expr) => {
+					if (expr.type !== "NewExpression" || expr.callee.type === "Super")
+						return;
+					if (
+						expr.arguments.length === 1 &&
+						expr.arguments[0].type === "MemberExpression" &&
+						isMetaUrl(parser, expr.arguments[0])
+					) {
+						const arg1 = expr.arguments[0];
+						return [
+							getUrl(parser.state.module),
+							[
+								/** @type {Range} */ (arg1.range)[0],
+								/** @type {Range} */ (arg1.range)[1]
+							]
+						];
+					} else if (expr.arguments.length === 2) {
+						const [arg1, arg2] = expr.arguments;
+						if (arg1.type === "SpreadElement") return;
+						if (arg2.type === "SpreadElement") return;
+						const callee = parser.evaluateExpression(expr.callee);
+						if (!callee.isIdentifier() || callee.identifier !== "URL") return;
+						const arg2Value = parser.evaluateExpression(arg2);
+						if (
+							!arg2Value.isString() ||
+							!(
+								/** @type {string} */ (arg2Value.string).startsWith("file://")
+							) ||
+							arg2Value.string !== getUrl(parser.state.module)
+						) {
+							return;
+						}
+						const arg1Value = parser.evaluateExpression(arg1);
+						if (!arg1Value.isString()) return;
+						return [
+							/** @type {string} */ (arg1Value.string),
+							[
+								/** @type {Range} */ (arg1.range)[0],
+								/** @type {Range} */ (arg2.range)[1]
+							]
+						];
+					}
+				};
+
+				/**
+				 * @param {JavascriptParser} parser the parser
+				 * @param {MemberExpression} expr expression
+				 * @returns {boolean} is `import.meta.url`
+				 */
+				const isMetaUrl = (parser, expr) => {
+					const chain = parser.extractMemberExpressionChain(expr);
+
+					if (
+						chain.members.length !== 1 ||
+						chain.object.type !== "MetaProperty" ||
+						chain.object.meta.name !== "import" ||
+						chain.object.property.name !== "meta" ||
+						chain.members[0] !== "url"
+					)
+						return false;
+
+					return true;
+				};
+
+				/** @typedef {Record<string, EXPECTED_ANY>} Values */
+
+				/**
+				 * @param {JavascriptParser} parser the parser
+				 * @param {ObjectExpression} expr expression
+				 * @returns {{ expressions: Record<string, Expression | Pattern>, otherElements: (Property | SpreadElement)[], values: Values, spread: boolean, insertType: "comma" | "single", insertLocation: number }} parsed object
+				 */
+				const parseObjectExpression = (parser, expr) => {
+					/** @type {Values} */
+					const values = {};
+					/** @type {Record<string, Expression | Pattern>} */
+					const expressions = {};
+					/** @type {(Property | SpreadElement)[]} */
+					const otherElements = [];
+					let spread = false;
+					for (const prop of expr.properties) {
+						if (prop.type === "SpreadElement") {
+							spread = true;
+						} else if (
+							prop.type === "Property" &&
+							!prop.method &&
+							!prop.computed &&
+							prop.key.type === "Identifier"
+						) {
+							expressions[prop.key.name] = prop.value;
+							if (!prop.shorthand && !prop.value.type.endsWith("Pattern")) {
+								const value = parser.evaluateExpression(
+									/** @type {Expression} */
+									(prop.value)
+								);
+								if (value.isCompileTimeValue())
+									values[prop.key.name] = value.asCompileTimeValue();
+							}
+						} else {
+							otherElements.push(prop);
+						}
+					}
+					const insertType = expr.properties.length > 0 ? "comma" : "single";
+					const insertLocation = /** @type {Range} */ (
+						expr.properties[expr.properties.length - 1].range
+					)[1];
+					return {
+						expressions,
+						otherElements,
+						values,
+						spread,
+						insertType,
+						insertLocation
+					};
+				};
+
+				/**
+				 * @param {Parser} parser parser parser
+				 * @param {JavascriptParserOptions} parserOptions parserOptions
+				 * @returns {void}
+				 */
+				const parserPlugin = (parser, parserOptions) => {
+					if (parserOptions.worker === false) return;
+					const options = !Array.isArray(parserOptions.worker)
+						? ["..."]
+						: parserOptions.worker;
+					/**
+					 * @param {CallExpression} expr expression
+					 * @returns {boolean | void} true when handled
+					 */
+					const handleNewWorker = expr => {
+						if (expr.arguments.length === 0 || expr.arguments.length > 2)
+							return;
+						const [arg1, arg2] = expr.arguments;
+						if (arg1.type === "SpreadElement") return;
+						if (arg2 && arg2.type === "SpreadElement") return;
+
+						/** @type {string} */
+						let url;
+						/** @type {Range} */
+						let range;
+						/** @type {boolean} */
+						let needNewUrl = false;
+
+						if (arg1.type === "MemberExpression" && isMetaUrl(parser, arg1)) {
+							url = getUrl(parser.state.module);
+							range = [
+								/** @type {Range} */ (arg1.range)[0],
+								/** @type {Range} */ (arg1.range)[1]
+							];
+							needNewUrl = true;
+						} else {
+							const parsedUrl = parseModuleUrl(parser, arg1);
+							if (!parsedUrl) return;
+							[url, range] = parsedUrl;
+						}
+
+						const {
+							expressions,
+							otherElements,
+							values: options,
+							spread: hasSpreadInOptions,
+							insertType,
+							insertLocation
+						} = arg2 && arg2.type === "ObjectExpression"
+							? parseObjectExpression(parser, arg2)
+							: {
+									/** @type {Record<string, Expression | Pattern>} */
+									expressions: {},
+									otherElements: [],
+									/** @type {Values} */
+									values: {},
+									spread: false,
+									insertType: arg2 ? "spread" : "argument",
+									insertLocation: arg2
+										? /** @type {Range} */ (arg2.range)
+										: /** @type {Range} */ (arg1.range)[1]
+								};
+						const { options: importOptions, errors: commentErrors } =
+							parser.parseCommentOptions(/** @type {Range} */ (expr.range));
+
+						if (commentErrors) {
+							for (const e of commentErrors) {
+								const { comment } = e;
+								parser.state.module.addWarning(
+									new CommentCompilationWarning(
+										`Compilation error while processing magic comment(-s): /*${comment.value}*/: ${e.message}`,
+										/** @type {DependencyLocation} */ (comment.loc)
+									)
+								);
+							}
+						}
+
+						/** @type {EntryOptions} */
+						const entryOptions = {};
+
+						if (importOptions) {
+							if (importOptions.webpackIgnore !== undefined) {
+								if (typeof importOptions.webpackIgnore !== "boolean") {
+									parser.state.module.addWarning(
+										new UnsupportedFeatureWarning(
+											`\`webpackIgnore\` expected a boolean, but received: ${importOptions.webpackIgnore}.`,
+											/** @type {DependencyLocation} */ (expr.loc)
+										)
+									);
+								} else if (importOptions.webpackIgnore) {
+									return false;
+								}
+							}
+							if (importOptions.webpackEntryOptions !== undefined) {
+								if (
+									typeof importOptions.webpackEntryOptions !== "object" ||
+									importOptions.webpackEntryOptions === null
+								) {
+									parser.state.module.addWarning(
+										new UnsupportedFeatureWarning(
+											`\`webpackEntryOptions\` expected a object, but received: ${importOptions.webpackEntryOptions}.`,
+											/** @type {DependencyLocation} */ (expr.loc)
+										)
+									);
+								} else {
+									Object.assign(
+										entryOptions,
+										importOptions.webpackEntryOptions
+									);
+								}
+							}
+							if (importOptions.webpackChunkName !== undefined) {
+								if (typeof importOptions.webpackChunkName !== "string") {
+									parser.state.module.addWarning(
+										new UnsupportedFeatureWarning(
+											`\`webpackChunkName\` expected a string, but received: ${importOptions.webpackChunkName}.`,
+											/** @type {DependencyLocation} */ (expr.loc)
+										)
+									);
+								} else {
+									entryOptions.name = importOptions.webpackChunkName;
+								}
+							}
+						}
+
+						if (
+							!Object.prototype.hasOwnProperty.call(entryOptions, "name") &&
+							options &&
+							typeof options.name === "string"
+						) {
+							entryOptions.name = options.name;
+						}
+
+						if (entryOptions.runtime === undefined) {
+							const i = workerIndexMap.get(parser.state) || 0;
+							workerIndexMap.set(parser.state, i + 1);
+							const name = `${cachedContextify(
+								parser.state.module.identifier()
+							)}|${i}`;
+							const hash = createHash(
+								/** @type {HashFunction} */
+								(compilation.outputOptions.hashFunction)
+							);
+							hash.update(name);
+							const digest =
+								/** @type {string} */
+								(hash.digest(compilation.outputOptions.hashDigest));
+							entryOptions.runtime = digest.slice(
+								0,
+								compilation.outputOptions.hashDigestLength
+							);
+						}
+
+						const block = new AsyncDependenciesBlock({
+							name: entryOptions.name,
+							entryOptions: {
+								chunkLoading: this._chunkLoading,
+								wasmLoading: this._wasmLoading,
+								...entryOptions
+							}
+						});
+						block.loc = expr.loc;
+						const dep = new WorkerDependency(url, range, {
+							publicPath: this._workerPublicPath,
+							needNewUrl
+						});
+						dep.loc = /** @type {DependencyLocation} */ (expr.loc);
+						block.addDependency(dep);
+						parser.state.module.addBlock(block);
+
+						if (compilation.outputOptions.trustedTypes) {
+							const dep = new CreateScriptUrlDependency(
+								/** @type {Range} */ (expr.arguments[0].range)
+							);
+							dep.loc = /** @type {DependencyLocation} */ (expr.loc);
+							parser.state.module.addDependency(dep);
+						}
+
+						if (expressions.type) {
+							const expr = expressions.type;
+							if (options.type !== false) {
+								const dep = new ConstDependency(
+									this._module ? '"module"' : "undefined",
+									/** @type {Range} */ (expr.range)
+								);
+								dep.loc = /** @type {DependencyLocation} */ (expr.loc);
+								parser.state.module.addPresentationalDependency(dep);
+								/** @type {EXPECTED_ANY} */
+								(expressions).type = undefined;
+							}
+						} else if (insertType === "comma") {
+							if (this._module || hasSpreadInOptions) {
+								const dep = new ConstDependency(
+									`, type: ${this._module ? '"module"' : "undefined"}`,
+									insertLocation
+								);
+								dep.loc = /** @type {DependencyLocation} */ (expr.loc);
+								parser.state.module.addPresentationalDependency(dep);
+							}
+						} else if (insertType === "spread") {
+							const dep1 = new ConstDependency(
+								"Object.assign({}, ",
+								/** @type {Range} */ (insertLocation)[0]
+							);
+							const dep2 = new ConstDependency(
+								`, { type: ${this._module ? '"module"' : "undefined"} })`,
+								/** @type {Range} */ (insertLocation)[1]
+							);
+							dep1.loc = /** @type {DependencyLocation} */ (expr.loc);
+							dep2.loc = /** @type {DependencyLocation} */ (expr.loc);
+							parser.state.module.addPresentationalDependency(dep1);
+							parser.state.module.addPresentationalDependency(dep2);
+						} else if (insertType === "argument" && this._module) {
+							const dep = new ConstDependency(
+								', { type: "module" }',
+								insertLocation
+							);
+							dep.loc = /** @type {DependencyLocation} */ (expr.loc);
+							parser.state.module.addPresentationalDependency(dep);
+						}
+
+						parser.walkExpression(expr.callee);
+						for (const key of Object.keys(expressions)) {
+							if (expressions[key]) {
+								if (expressions[key].type.endsWith("Pattern")) continue;
+								parser.walkExpression(
+									/** @type {Expression} */
+									(expressions[key])
+								);
+							}
+						}
+						for (const prop of otherElements) {
+							parser.walkProperty(prop);
+						}
+						if (insertType === "spread") {
+							parser.walkExpression(arg2);
+						}
+
+						return true;
+					};
+					/**
+					 * @param {string} item item
+					 */
+					const processItem = item => {
+						if (
+							item.startsWith("*") &&
+							item.includes(".") &&
+							item.endsWith("()")
+						) {
+							const firstDot = item.indexOf(".");
+							const pattern = item.slice(1, firstDot);
+							const itemMembers = item.slice(firstDot + 1, -2);
+
+							parser.hooks.preDeclarator.tap(PLUGIN_NAME, (decl, statement) => {
+								if (decl.id.type === "Identifier" && decl.id.name === pattern) {
+									parser.tagVariable(decl.id.name, WorkerSpecifierTag);
+									return true;
+								}
+							});
+							parser.hooks.pattern.for(pattern).tap(PLUGIN_NAME, pattern => {
+								parser.tagVariable(pattern.name, WorkerSpecifierTag);
+								return true;
+							});
+							parser.hooks.callMemberChain
+								.for(WorkerSpecifierTag)
+								.tap(PLUGIN_NAME, (expression, members) => {
+									if (itemMembers !== members.join(".")) {
+										return;
+									}
+
+									return handleNewWorker(expression);
+								});
+						} else if (item.endsWith("()")) {
+							parser.hooks.call
+								.for(item.slice(0, -2))
+								.tap(PLUGIN_NAME, handleNewWorker);
+						} else {
+							const match = /^(.+?)(\(\))?\s+from\s+(.+)$/.exec(item);
+							if (match) {
+								const ids = match[1].split(".");
+								const call = match[2];
+								const source = match[3];
+								(call ? parser.hooks.call : parser.hooks.new)
+									.for(harmonySpecifierTag)
+									.tap(PLUGIN_NAME, expr => {
+										const settings = /** @type {HarmonySettings} */ (
+											parser.currentTagData
+										);
+										if (
+											!settings ||
+											settings.source !== source ||
+											!equals(settings.ids, ids)
+										) {
+											return;
+										}
+										return handleNewWorker(expr);
+									});
+							} else {
+								parser.hooks.new.for(item).tap(PLUGIN_NAME, handleNewWorker);
+							}
+						}
+					};
+					for (const item of options) {
+						if (item === "...") {
+							for (const itemFromDefault of DEFAULT_SYNTAX) {
+								processItem(itemFromDefault);
+							}
+						} else processItem(item);
+					}
+				};
+				normalModuleFactory.hooks.parser
+					.for(JAVASCRIPT_MODULE_TYPE_AUTO)
+					.tap(PLUGIN_NAME, parserPlugin);
+				normalModuleFactory.hooks.parser
+					.for(JAVASCRIPT_MODULE_TYPE_ESM)
+					.tap(PLUGIN_NAME, parserPlugin);
+			}
+		);
+	}
+}
+module.exports = WorkerPlugin;