perf: remove JS side config validation

.gitignore

@@ -68,6 +68,10 @@ jspm_packages/
 # Snowpack dependency directory (https://snowpack.dev/)
 web_modules/
 
+# Temp files
+.cache
+.temp
+
 # TypeScript cache
 *.tsbuildinfo
 
@@ -77,15 +81,6 @@ web_modules/
 # Optional eslint cache
 .eslintcache
 
-# Optional stylelint cache
-.stylelintcache
-
-# Microbundle cache
-.rpt2_cache/
-.rts2_cache_cjs/
-.rts2_cache_es/
-.rts2_cache_umd/
-
 # Optional REPL history
 .node_repl_history
 
@@ -102,50 +97,14 @@ web_modules/
 .env.production.local
 .env.local
 
-# parcel-bundler cache (https://parceljs.org/)
-.cache
-.parcel-cache
-
-# Next.js build output
-.next
-out
-
-# Nuxt.js build / generate output
-.nuxt
-
 # Dist files
 dist
 compiled
 webpack-dist
 
-# Gatsby files
-.cache/
-# Comment in the public line in if your project uses Gatsby and not Next.js
-# https://nextjs.org/blog/next-9-1#public-directory-support
-# public
-
-# vuepress build output
-.vuepress/dist
-
-# vuepress v2.x temp and cache directory
-.temp
-.cache
-
-# Docusaurus cache and generated files
-.docusaurus
-
 # Serverless directories
 .serverless/
 
-# FuseBox cache
-.fusebox/
-
-# DynamoDB Local files
-.dynamodb/
-
-# TernJS port file
-.tern-port
-
 # Stores VSCode versions used for testing VSCode extensions
 .vscode-test
 
@@ -163,7 +122,6 @@ webpack-dist
 # os
 .DS_Store
 
-
 # Do not ignore this for binding test
 # crates/node_binding/binding.d.ts
 
@@ -174,20 +132,12 @@ tests/e2e/temp
 packages/*/tests/js
 tests/rspack-test/js
 
-
 # Benchmark
 /github/
 
 # profile
 profile.json
 
-# esbuild trace
-esbuild.trace
-
-# esbuild cpuprofile
-esbuild.cpuprofile
-
-
 # this node_modules is used for tree-shaking snapshot
 !tests/rspack-test/treeShakingCases/node_modules
 
@@ -210,12 +160,6 @@ npm/**/*.node
 !npm/win32-ia32-msvc
 !npm/win32-x64-msvc/
 
-# Precompiled config schema
-packages/rspack/src/config/schema.check.js
-
-## Angular Incremental Build Cache
-**/.angular/
-
 smoke-example
 diff_output
 
@@ -235,7 +179,7 @@ diff_output
 trace.json
 *.pftrace
 
-# Rsapck bench
+# Rspack bench
 .bench
 
 # Claude

crates/rspack_hash/src/lib.rs

@@ -21,7 +21,10 @@ impl From<&str> for HashFunction {
       "xxhash64" => HashFunction::Xxhash64,
       "md4" => HashFunction::MD4,
       "sha256" => HashFunction::SHA256,
-      _ => unimplemented!("{}", value),
+      _ => panic!(
+        "Unsupported hash function: '{}'. Expected one of: xxhash64, md4, sha256",
+        value
+      ),
     }
   }
 }
@@ -35,7 +38,7 @@ impl From<&str> for HashDigest {
   fn from(value: &str) -> Self {
     match value {
       "hex" => HashDigest::Hex,
-      _ => unimplemented!(),
+      _ => panic!("Unsupported hash digest: '{}'. Expected: hex", value),
     }
   }
 }

packages/rspack-cli/src/cli.ts

@@ -46,8 +46,6 @@ export class RspackCLI {
 		rspackCommand: Command,
 		callback?: (e: Error | null, res?: Stats | MultiStats) => void
 	) {
-		process.env.RSPACK_CONFIG_VALIDATE ??= "loose";
-
 		let { config, pathMap } = await this.loadConfig(options);
 		config = await this.buildConfig(config, pathMap, options, rspackCommand);
 

packages/rspack-cli/src/commands/build.ts

@@ -49,9 +49,7 @@ async function runBuild(cli: RspackCLI, options: BuildOptions): Promise<void> {
 						item.options ? item.options.stats : undefined
 					)
 				}
-			: compiler.options
-				? compiler.options.stats
-				: undefined;
+			: compiler.options?.stats;
 
 		if (options.json && createJsonStringifyStream) {
 			const handleWriteError = (error: Error) => {

packages/rspack/etc/core.api.md

@@ -6294,6 +6294,7 @@ declare namespace rspackExports {
         NormalModuleFactory,
         RspackError,
         RspackSeverity,
+        ValidationError,
         RuntimeGlobals,
         RuntimeModule,
         StatsAsset,
@@ -6309,7 +6310,6 @@ declare namespace rspackExports {
         Watching,
         sources,
         config,
-        ValidationError,
         util,
         BannerPluginArgument,
         DefinePluginOptions,

packages/rspack/package.json

@@ -29,7 +29,12 @@
     "api-extractor": "api-extractor run --verbose",
     "api-extractor:ci": "api-extractor run --verbose || diff temp/core.api.md etc/core.api.md"
   },
-  "files": ["dist", "hot", "compiled", "module.d.ts"],
+  "files": [
+    "dist",
+    "hot",
+    "compiled",
+    "module.d.ts"
+  ],
   "engines": {
     "node": ">=18.12.0"
   },
@@ -45,6 +50,7 @@
     "@rsbuild/plugin-node-polyfill": "^1.4.2",
     "@rslib/core": "0.15.1",
     "@swc/types": "0.1.25",
+    "@types/node": "^20.19.21",
     "@types/watchpack": "^2.4.4",
     "browserslist-load-config": "^1.0.1",
     "enhanced-resolve": "5.18.3",
@@ -55,9 +61,7 @@
     "tsx": "^4.20.6",
     "typescript": "^5.9.3",
     "watchpack": "^2.4.4",
-    "webpack-sources": "3.3.3",
-    "zod": "^4.1.12",
-    "zod-validation-error": "^4.0.2"
+    "webpack-sources": "3.3.3"
   },
   "dependencies": {
     "@module-federation/runtime-tools": "0.20.0",

packages/rspack/rslib.config.mts

@@ -63,45 +63,6 @@ const commonLibConfig: LibConfig = {
 	}
 };
 
-/**
- * The `zod` dependency is bundled by Rslib. Since Rspack's public APIs
- * do not depend on `zod` types, we add `@ts-ignore` to prevent type errors
- * when users set `skipLibCheck: false` in their tsconfig.json file.
- */
-const fixZodTypePlugin: rsbuild.RsbuildPlugin = {
-	name: "fix-zod-type",
-	setup(api) {
-		api.onAfterBuild(async () => {
-			const schemaDir = path.join(api.context.distPath, "schema");
-
-			if (!fs.existsSync(schemaDir)) {
-				throw new Error(`Schema directory not found: ${schemaDir}`);
-			}
-
-			const files = await fs.promises.readdir(schemaDir);
-			const dtsFiles = files.filter(file => file.endsWith(".d.ts"));
-
-			for (const file of dtsFiles) {
-				const filePath = path.join(schemaDir, file);
-				const content = await fs.promises.readFile(filePath, "utf-8");
-				const newContent = content
-					.replace(
-						`import * as z from "zod";`,
-						`// @ts-ignore\nimport * as z from "zod";`
-					)
-					.replace(
-						`import type { z } from "zod";`,
-						`// @ts-ignore\nimport type { z } from "zod";`
-					);
-
-				if (content !== newContent) {
-					await fs.promises.writeFile(filePath, newContent);
-				}
-			}
-		});
-	}
-};
-
 const mfRuntimePlugin: rsbuild.RsbuildPlugin = {
 	name: "mf-runtime",
 	setup(api) {
@@ -169,7 +130,7 @@ const codmodPlugin: rsbuild.RsbuildPlugin = {
 };
 
 export default defineConfig({
-	plugins: [fixZodTypePlugin, mfRuntimePlugin, codmodPlugin],
+	plugins: [mfRuntimePlugin, codmodPlugin],
 	lib: [
 		merge(commonLibConfig, {
 			dts: {

packages/rspack/scripts/check-documentation-coverage.ts

@@ -3,9 +3,6 @@ import { basename, dirname, extname, join, resolve } from "node:path";
 import { fileURLToPath } from "node:url";
 import { ApiItemKind, ApiModel } from "@microsoft/api-extractor-model";
 
-// import { ZodObject, ZodOptional, ZodUnion } from "zod";
-// import { rspackOptions } from "../src/config/zod.ts";
-
 const __filename = fileURLToPath(import.meta.url);
 const __dirname = dirname(__filename);
 
@@ -157,7 +154,7 @@ type Section = {
 /**
  * The process of checking the documentation coverage of Rspack configuration
  *
- * 1. Retrieve and traverse all implemented Rspack configurations through zod declaration.
+ * 1. Retrieve and traverse all implemented Rspack configurations.
  * 2. Traverse the configurations and determine whether they match the any level titles of the Markdown files under the config directory of the document site:
  *     1. If so, pass.
  *     2. If not, judge whether the introduction of the configuration exists in the body of the parent configuration:
@@ -167,35 +164,6 @@ type Section = {
 function checkConfigsDocumentationCoverage() {
 	const CONFIG_DOCS_DIR = resolve(__dirname, "../../../website/docs/en/config");
 
-	// function getImplementedConfigs() {
-	// 	const implementedConfigs: string[] = [];
-	// 	function visit(zod, path = "") {
-	// 		if (zod instanceof ZodObject) {
-	// 			for (const [key, schema] of Object.entries(zod.shape)) {
-	// 				const next = (() => {
-	// 					if (key.includes("/")) {
-	// 						return `${path}["${key}"]`;
-	// 					}
-	// 					if (path) {
-	// 						return `${path}.${key}`;
-	// 					}
-	// 					return key;
-	// 				})();
-	// 				implementedConfigs.push(next);
-	// 				visit(schema, next);
-	// 			}
-	// 		} else if (zod instanceof ZodOptional) {
-	// 			visit(zod.unwrap(), path);
-	// 		} else if (zod instanceof ZodUnion) {
-	// 			for (const schema of zod.options) {
-	// 				visit(schema, path);
-	// 			}
-	// 		}
-	// 	}
-	// 	visit(rspackOptions);
-	// 	return implementedConfigs;
-	// }
-
 	function parseConfigDocuments() {
 		function parseMarkdownContent(content) {
 			const sections: Section[] = [];

packages/rspack/src/Compiler.ts

@@ -849,11 +849,12 @@ class Compiler {
 			return callback(null, this.#instance);
 		}
 
-		const options = this.options;
+		const { options } = this;
 		const rawOptions = getRawOptions(options, this);
 		rawOptions.__references = Object.fromEntries(
 			this.#ruleSet.builtinReferences.entries()
 		);
+
 		rawOptions.__virtual_files =
 			VirtualModulesPlugin.__internal__take_virtual_files(this);
 
@@ -867,20 +868,35 @@ class Compiler {
 				? ThreadsafeInputNodeFS.__to_binding(this.inputFileSystem)
 				: undefined;
 
-		this.#instance = new instanceBinding.JsCompiler(
-			this.compilerPath,
-			rawOptions,
-			this.#builtinPlugins,
-			this.#registers,
-			ThreadsafeOutputNodeFS.__to_binding(this.outputFileSystem!),
-			this.intermediateFileSystem
-				? ThreadsafeIntermediateNodeFS.__to_binding(this.intermediateFileSystem)
-				: undefined,
-			inputFileSystem,
-			ResolverFactory.__to_binding(this.resolverFactory)
-		);
+		try {
+			this.#instance = new instanceBinding.JsCompiler(
+				this.compilerPath,
+				rawOptions,
+				this.#builtinPlugins,
+				this.#registers,
+				ThreadsafeOutputNodeFS.__to_binding(this.outputFileSystem!),
+				this.intermediateFileSystem
+					? ThreadsafeIntermediateNodeFS.__to_binding(
+							this.intermediateFileSystem
+						)
+					: undefined,
+				inputFileSystem,
+				ResolverFactory.__to_binding(this.resolverFactory)
+			);
 
-		callback(null, this.#instance);
+			callback(null, this.#instance);
+		} catch (err) {
+			if (err instanceof Error) {
+				// hide unnecessary stack trace
+				delete err.stack;
+			}
+			callback(
+				new Error(
+					"Failed to create Rspack compiler instance, check the Rspack configuration.",
+					{ cause: err }
+				)
+			);
+		}
 	}
 
 	#createHooksRegisters(): binding.RegisterJsTaps {