feat(core): support Rspack builtin CSS

Author: intellild

e2e/cases/css/enable-experiments-css/index.test.ts

@@ -3,7 +3,7 @@ import { getFileContent } from '@rstackjs/test-utils';
 
 const COMPILE_WARNING = 'Compile Warning';
 
-test('should allow to enable Rspack experiments.css', async ({ build }) => {
+test('should allow to enable experiments.css', async ({ build }) => {
   const rsbuild = await build();
   const files = rsbuild.getDistFiles();
   const content = getFileContent(files, 'index.css');
@@ -13,7 +13,7 @@ test('should allow to enable Rspack experiments.css', async ({ build }) => {
   rsbuild.expectNoLog(COMPILE_WARNING);
 });
 
-test('should allow to enable Rspack experiments.css with style-loader', async ({ build }) => {
+test('should allow to enable experiments.css with style injection', async ({ build }) => {
   const rsbuild = await build({
     config: {
       output: {

e2e/cases/css/enable-experiments-css/rsbuild.config.ts

@@ -1,12 +1,8 @@
 import { defineConfig } from '@rsbuild/core';
 
 export default defineConfig({
-  tools: {
-    rspack: {
-      experiments: {
-        css: true,
-      },
-    },
+  experiments: {
+    css: true,
   },
   output: {
     filenameHash: false,

packages/core/src/configChain.ts

@@ -72,6 +72,7 @@ export const CHAIN_ID = {
     JS_TEXT: 'js-text',
     /** CSS oneOf rules */
     CSS_MAIN: 'css',
+    CSS_MODULE: 'css-module',
     CSS_RAW: 'css-raw',
     CSS_TEXT: 'css-text',
     CSS_URL: 'css-url',

packages/core/src/defaultConfig.ts

@@ -214,6 +214,9 @@ const getDefaultResolveConfig = (): NormalizedResolveConfig => {
 
 const createDefaultConfig = (): RsbuildConfig => ({
   dev: getDefaultDevConfig(),
+  experiments: {
+    css: false,
+  },
   server: getDefaultServerConfig(),
   html: getDefaultHtmlConfig(),
   resolve: getDefaultResolveConfig(),

packages/core/src/index.ts

@@ -76,6 +76,7 @@ export type {
   DistPathConfig,
   EnvironmentConfig,
   EnvironmentContext,
+  ExperimentsConfig,
   FilenameConfig,
   FilenameHash,
   HistoryApiFallbackContext,
@@ -121,6 +122,7 @@ export type {
   NormalizedConfig,
   NormalizedDevConfig,
   NormalizedEnvironmentConfig,
+  NormalizedExperimentsConfig,
   NormalizedHtmlConfig,
   NormalizedModuleFederationConfig,
   NormalizedOutputConfig,