improve parsing to handle non-literal options

lib/dependencies/WorkerDependency.js

@@ -25,12 +25,10 @@ class WorkerDependency extends ModuleDependency {
 	/**
 	 * @param {string} request request
 	 * @param {[number, number]} range range
-	 * @param {Record<string, any> | undefined} options options
 	 */
-	constructor(request, range, options) {
+	constructor(request, range) {
 		super(request);
 		this.range = range;
-		this.options = options;
 	}
 
 	/**
@@ -81,9 +79,7 @@ WorkerDependency.Template = class WorkerDependencyTemplate extends (
 			dep.range[1] - 1,
 			`new URL(/* worker import */ ${RuntimeGlobals.publicPath} + ${
 				RuntimeGlobals.getChunkScriptFilename
-			}(${JSON.stringify(chunk.id)}), ${RuntimeGlobals.baseURI})${
-				dep.options ? `, ${JSON.stringify(dep.options)}` : ""
-			}`
+			}(${JSON.stringify(chunk.id)}), ${RuntimeGlobals.baseURI})`
 		);
 	}
 };

lib/dependencies/WorkerPlugin.js

@@ -14,12 +14,17 @@ const EnableChunkLoadingPlugin = require("../javascript/EnableChunkLoadingPlugin
 const { equals } = require("../util/ArrayHelpers");
 const { contextify } = require("../util/identifier");
 const EnableWasmLoadingPlugin = require("../wasm/EnableWasmLoadingPlugin");
+const ConstDependency = require("./ConstDependency");
 const {
 	harmonySpecifierTag
 } = require("./HarmonyImportDependencyParserPlugin");
 const WorkerDependency = require("./WorkerDependency");
 
 /** @typedef {import("estree").Expression} Expression */
+/** @typedef {import("estree").ObjectExpression} ObjectExpression */
+/** @typedef {import("estree").Pattern} Pattern */
+/** @typedef {import("estree").Property} Property */
+/** @typedef {import("estree").SpreadElement} SpreadElement */
 /** @typedef {import("../Compiler")} Compiler */
 /** @typedef {import("../Entrypoint").EntryOptions} EntryOptions */
 /** @typedef {import("../javascript/BasicEvaluatedExpression")} BasicEvaluatedExpression */
@@ -73,7 +78,7 @@ class WorkerPlugin {
 				/**
 				 * @param {JavascriptParser} parser the parser
 				 * @param {Expression} expr expression
-				 * @returns {BasicEvaluatedExpression} parsed
+				 * @returns {[BasicEvaluatedExpression, [number, number]]} parsed
 				 */
 				const parseModuleUrl = (parser, expr) => {
 					if (
@@ -95,35 +100,55 @@ class WorkerPlugin {
 					) {
 						return;
 					}
-					return parser.evaluateExpression(arg1);
+					const arg1Value = parser.evaluateExpression(arg1);
+					return [arg1Value, [arg1.range[0], arg2.range[1]]];
 				};
 
 				/**
 				 * @param {JavascriptParser} parser the parser
-				 * @param {Expression} expr expression
-				 * @returns {object | undefined} parsed object
+				 * @param {ObjectExpression} expr expression
+				 * @returns {{ expressions: Record<string, Expression | Pattern>, otherElements: (Property | SpreadElement)[], values: Record<string, any>, spread: boolean, insertType: "comma" | "single", insertLocation: number }} parsed object
 				 */
-				const parseObjectLiteral = (parser, expr) => {
-					if (expr.type !== "ObjectExpression") return;
-					const obj = {};
+				const parseObjectExpression = (parser, expr) => {
+					/** @type {Record<string, any>} */
+					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 === "Property") {
-							if (
+						if (prop.type === "SpreadElement") {
+							spread = true;
+						} else if (
+							prop.type === "Property" &&
 							!prop.method &&
 							!prop.computed &&
-								!prop.shorthand &&
-								prop.key.type === "Identifier" &&
-								!prop.value.type.endsWith("Pattern")
+							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())
-									obj[prop.key.name] = value.asCompileTimeValue();
+									values[prop.key.name] = value.asCompileTimeValue();
+							}
+						} else {
+							otherElements.push(prop);
 						}
 					}
-					}
-					return obj;
+					const insertType = expr.properties.length > 0 ? "comma" : "single";
+					const insertLocation =
+						expr.properties[expr.properties.length - 1].range[1];
+					return {
+						expressions,
+						otherElements,
+						values,
+						spread,
+						insertType,
+						insertLocation
+					};
 				};
 
 				/**
@@ -139,22 +164,30 @@ class WorkerPlugin {
 						if (expr.arguments.length === 0 || expr.arguments.length > 2)
 							return;
 						const [arg1, arg2] = expr.arguments;
-						/** @type {[number, number]} */
-						const range = [arg1.range[0], (arg2 || arg1).range[1]];
-						const url = parseModuleUrl(parser, arg1);
-						if (!url || !url.isString()) return;
-						let options;
-						if (arg2) {
-							options = parseObjectLiteral(parser, arg2);
-							if (!options) return;
-							// Remove `type: "module"` if present.
-							delete options.type;
-							// If the `options` is now an empty object,
-							// remove it from the final bundle.
-							if (Object.keys(options).length === 0) {
-								options = undefined;
-							}
-						}
+						if (arg1.type === "SpreadElement") return;
+						if (arg2 && arg2.type === "SpreadElement") return;
+						const parsedUrl = parseModuleUrl(parser, arg1);
+						if (!parsedUrl) return;
+						const [url, range] = parsedUrl;
+						if (!url.isString()) return;
+						const {
+							expressions,
+							otherElements,
+							values: options,
+							spread: hasSpreadInOptions,
+							insertType,
+							insertLocation
+						} =
+							arg2 && arg2.type === "ObjectExpression"
+								? parseObjectExpression(parser, arg2)
+								: {
+										expressions: {},
+										otherElements: [],
+										values: {},
+										spread: false,
+										insertType: arg2 ? "spread" : "argument",
+										insertLocation: arg2 ? arg2.range : arg1.range[1]
+								  };
 						const {
 							options: importOptions,
 							errors: commentErrors
@@ -225,7 +258,7 @@ class WorkerPlugin {
 						if (
 							!Object.prototype.hasOwnProperty.call(entryOptions, "name") &&
 							options &&
-							options.name
+							typeof options.name === "string"
 						) {
 							entryOptions.name = options.name;
 						}
@@ -245,12 +278,52 @@ class WorkerPlugin {
 							}
 						});
 						block.loc = expr.loc;
-						const dep = new WorkerDependency(url.string, range, options);
+						const dep = new WorkerDependency(url.string, range);
 						dep.loc = expr.loc;
 						block.addDependency(dep);
 						parser.state.module.addBlock(block);
 						parser.walkExpression(expr.callee);
-						if (arg2) parser.walkExpression(arg2);
+
+						if (expressions.type) {
+							const expr = expressions.type;
+							if (options.type !== false) {
+								const dep = new ConstDependency("undefined", expr.range);
+								dep.loc = expr.loc;
+								parser.state.module.addPresentationalDependency(dep);
+								expressions.type = undefined;
+							}
+						} else if (hasSpreadInOptions && insertType === "comma") {
+							const dep = new ConstDependency(
+								",type: undefined",
+								insertLocation
+							);
+							dep.loc = expr.loc;
+							parser.state.module.addPresentationalDependency(dep);
+						} else if (insertType === "spread") {
+							const dep1 = new ConstDependency(
+								"Object.assign({}, ",
+								insertLocation[0]
+							);
+							const dep2 = new ConstDependency(
+								", { type: undefined })",
+								insertLocation[1]
+							);
+							dep1.loc = expr.loc;
+							dep2.loc = expr.loc;
+							parser.state.module.addPresentationalDependency(dep1);
+							parser.state.module.addPresentationalDependency(dep2);
+						}
+
+						for (const key of Object.keys(expressions)) {
+							if (expressions[key]) parser.walkExpression(expressions[key]);
+						}
+						for (const prop of otherElements) {
+							parser.walkProperty(prop);
+						}
+						if (insertType === "spread") {
+							parser.walkExpression(arg2);
+						}
+
 						return true;
 					};
 					const processItem = item => {

lib/javascript/JavascriptParser.js

@@ -2286,9 +2286,14 @@ class JavascriptParser extends Parser {
 			propIndex++
 		) {
 			const prop = expression.properties[propIndex];
+			this.walkProperty(prop);
+		}
+	}
+
+	walkProperty(prop) {
 		if (prop.type === "SpreadElement") {
 			this.walkExpression(prop.argument);
-				continue;
+			return;
 		}
 		if (prop.computed) {
 			this.walkExpression(prop.key);
@@ -2301,7 +2306,6 @@ class JavascriptParser extends Parser {
 			this.walkExpression(prop.value);
 		}
 	}
-	}
 
 	walkFunctionExpression(expression) {
 		const wasTopLevel = this.scope.topLevelScope;

test/configCases/worker/web-worker/index.js

@@ -12,6 +12,48 @@ it("should allow to create a WebWorker", async () => {
 	await worker.terminate();
 });
 
+it("should allow to create a WebWorker (multiple options)", async () => {
+	const worker = new Worker(new URL("./worker.js", import.meta.url), {
+		type: "module",
+		name: "worker1"
+	});
+	worker.postMessage("ok");
+	const result = await new Promise(resolve => {
+		worker.onmessage = event => {
+			resolve(event.data);
+		};
+	});
+	expect(result).toBe("data: OK, thanks");
+	await worker.terminate();
+});
+
+it("should allow to create a WebWorker (spread type)", async () => {
+	const worker = new Worker(new URL("./worker.js", import.meta.url), {
+		...{ type: "module" }
+	});
+	worker.postMessage("ok");
+	const result = await new Promise(resolve => {
+		worker.onmessage = event => {
+			resolve(event.data);
+		};
+	});
+	expect(result).toBe("data: OK, thanks");
+	await worker.terminate();
+});
+
+it("should allow to create a WebWorker (expression)", async () => {
+	const options = { type: "module" };
+	const worker = new Worker(new URL("./worker.js", import.meta.url), options);
+	worker.postMessage("ok");
+	const result = await new Promise(resolve => {
+		worker.onmessage = event => {
+			resolve(event.data);
+		};
+	});
+	expect(result).toBe("data: OK, thanks");
+	await worker.terminate();
+});
+
 it("should allow to share chunks", async () => {
 	const promise = import("./module");
 	const script = document.head._children[0];

types.d.ts

@@ -4626,6 +4626,7 @@ declare class JavascriptParser extends Parser {
 	walkArrayExpression(expression?: any): void;
 	walkSpreadElement(expression?: any): void;
 	walkObjectExpression(expression?: any): void;
+	walkProperty(prop?: any): void;
 	walkFunctionExpression(expression?: any): void;
 	walkArrowFunctionExpression(expression?: any): void;
 	walkSequenceExpression(expression: SequenceExpression): void;