feat: add new source.assetsInclude config

e2e/cases/assets/addtional-assets/index.test.ts

@@ -0,0 +1,79 @@
+import path from 'node:path';
+import { build } from '@e2e/helper';
+import { expect, test } from '@playwright/test';
+
+function isIncludeFile(filenames: string[], includeFilename: string) {
+  return filenames.some((filename) => filename.includes(includeFilename));
+}
+
+test('should allow to configure additional assets and match by RegExp', async () => {
+  const rsbuild = await build({
+    cwd: __dirname,
+    rsbuildConfig: {
+      source: {
+        assetsInclude: [/\.json5$/],
+      },
+    },
+  });
+
+  const files = await rsbuild.unwrapOutputJSON();
+  const filenames = Object.keys(files);
+
+  const indexJs = await rsbuild.getIndexFile();
+  expect(indexJs.content).toContain('data:application/json5;base64,');
+
+  expect(
+    isIncludeFile(filenames, 'dist/static/assets/test-temp-large.json5'),
+  ).toBeTruthy();
+  expect(
+    isIncludeFile(filenames, 'dist/static/assets/test-temp-small.json5'),
+  ).toBeFalsy();
+});
+
+test('should allow to configure additional assets and match by path', async () => {
+  const rsbuild = await build({
+    cwd: __dirname,
+    rsbuildConfig: {
+      source: {
+        assetsInclude: path.resolve(__dirname, 'src/assets'),
+      },
+    },
+  });
+
+  const files = await rsbuild.unwrapOutputJSON();
+  const filenames = Object.keys(files);
+
+  const indexJs = await rsbuild.getIndexFile();
+  expect(indexJs.content).toContain('data:application/json5;base64,');
+
+  expect(
+    isIncludeFile(filenames, 'dist/static/assets/test-temp-large.json5'),
+  ).toBeTruthy();
+  expect(
+    isIncludeFile(filenames, 'dist/static/assets/test-temp-small.json5'),
+  ).toBeFalsy();
+});
+
+test('should allow to disable emit for additional assets', async () => {
+  const rsbuild = await build({
+    cwd: __dirname,
+    rsbuildConfig: {
+      source: {
+        assetsInclude: [/\.json5$/],
+      },
+      output: {
+        emitAssets: false,
+      },
+    },
+  });
+
+  const files = await rsbuild.unwrapOutputJSON();
+  const filenames = Object.keys(files);
+
+  expect(
+    isIncludeFile(filenames, 'dist/static/assets/test-temp-large.json5'),
+  ).toBeFalsy();
+  expect(
+    isIncludeFile(filenames, 'dist/static/assets/test-temp-small.json5'),
+  ).toBeFalsy();
+});

e2e/cases/assets/addtional-assets/rsbuild.config.ts

@@ -0,0 +1,18 @@
+import { join } from 'node:path';
+import { defineConfig } from '@rsbuild/core';
+import { outputFileSync } from 'fs-extra';
+
+outputFileSync(
+  join(__dirname, 'src/assets/test-temp-small.json5'),
+  JSON.stringify({ a: 1 }),
+);
+outputFileSync(
+  join(__dirname, 'src/assets/test-temp-large.json5'),
+  JSON.stringify({ a: '1'.repeat(10000) }),
+);
+
+export default defineConfig({
+  output: {
+    filenameHash: false,
+  },
+});

e2e/cases/assets/addtional-assets/src/index.js

@@ -0,0 +1,5 @@
+import large from './assets/test-temp-large.json5';
+import small from './assets/test-temp-small.json5';
+
+console.log(large);
+console.log(small);

packages/core/src/plugins/asset.ts

@@ -2,6 +2,7 @@ import path from 'node:path';
 import type { GeneratorOptionsByModuleType } from '@rspack/core';
 import {
   AUDIO_EXTENSIONS,
+  DEFAULT_DATA_URL_SIZE,
   FONT_EXTENSIONS,
   IMAGE_EXTENSIONS,
   VIDEO_EXTENSIONS,
@@ -126,6 +127,25 @@ export const pluginAsset = (): RsbuildPlugin => ({
       if (!emitAssets) {
         chain.module.generator.merge({ 'asset/resource': { emit: false } });
       }
+
+      // additional assets
+      const { assetsInclude } = config.source;
+      if (assetsInclude) {
+        const { dataUriLimit } = config.output;
+        const rule = chain.module.rule('additional-assets').test(assetsInclude);
+        const maxSize =
+          typeof dataUriLimit === 'number'
+            ? dataUriLimit
+            : DEFAULT_DATA_URL_SIZE;
+
+        chainStaticAssetRule({
+          emit: emitAssets,
+          rule,
+          maxSize,
+          filename: assetsFilename,
+          assetType: 'additional',
+        });
+      }
     });
   },
 });

packages/core/src/types/config.ts

@@ -183,6 +183,11 @@ export interface SourceConfig {
    * and the `alias` option in the bundler.
    */
   aliasStrategy?: AliasStrategy;
+  /**
+   * Include additional files that should be treated as static assets.
+   * @default undefined
+   */
+  assetsInclude?: Rspack.RuleSetCondition;
   /**
    * Specify directories or modules that need additional compilation.
    * In order to maintain faster compilation speed, Rsbuild will not compile files under node_modules through

website/docs/en/config/source/assets-include.mdx

@@ -0,0 +1,44 @@
+# source.assetsInclude
+
+- **Type:** [Rspack.RuleSetCondition](https://rspack.dev/config/module#condition)
+- **Default:** `undefined`
+
+Include additional files that should be treated as static assets.
+
+By default, Rsbuild treats common image, font, audio, and video files as static assets. Through the `source.assetsInclude` config, you can specify additional file types that should be treated as static assets. These added static assets are processed using the same rules as the built-in supported static assets, see [Static Assets](/guide/basic/static-assets).
+
+The value of `source.assetsInclude` is the same as the `test` option in Rspack loader. It can be a regular expression, string, array, logical condition, etc. For more details, see [Rspack RuleSetCondition](https://rspack.dev/config/module#condition).
+
+## Example
+
+- Treating `.json5` files as static assets:
+
+```ts
+export default defineConfig({
+  source: {
+    assetsInclude: /\.json5$/,
+  },
+});
+```
+
+- Treating multiple file types as static assets:
+
+```ts
+export default defineConfig({
+  source: {
+    assetsInclude: [/\.json5$/, /\.pdf$/],
+  },
+});
+```
+
+- Treating specific files as static assets:
+
+```ts
+import path from 'node:path';
+
+export default defineConfig({
+  source: {
+    assetsInclude: path.resolve(__dirname, 'src/assets/foo.json5'),
+  },
+});
+```

website/docs/en/config/source/exclude.mdx

@@ -1,6 +1,6 @@
 # source.exclude
 
-- **Type:** [RuleSetCondition[]](https://rspack.dev/config/module#condition)
+- **Type:** [Rspack.RuleSetCondition](https://rspack.dev/config/module#condition)
 - **Default:** `[]`
 
 Specifies JavaScript/TypeScript files that do not need to be compiled. The usage is consistent with [Rule.exclude](https://rspack.dev/config/module#ruleexclude) in Rspack, which supports passing in strings or regular expressions to match the module path.

website/docs/en/config/source/include.mdx

@@ -1,6 +1,6 @@
 # source.include
 
-- **Type:** [RuleSetCondition[]](https://rspack.dev/config/module#condition)
+- **Type:** [Rspack.RuleSetCondition](https://rspack.dev/config/module#condition)
 - **Default:**
 
 ```ts

website/docs/zh/config/source/assets-include.mdx

@@ -0,0 +1,44 @@
+# source.assetsInclude
+
+- **类型：** [Rspack.RuleSetCondition](https://rspack.dev/config/module#condition)
+- **默认值：** `undefined`
+
+指定需要被视为静态资源的额外文件类型。
+
+Rsbuild 默认会将常见的图片、字体、音频、视频等文件视为静态资源。通过配置 `source.assetsInclude`，你可以添加更多的文件类型，这些新增的静态资源将按照与内置静态资源相同的规则进行处理，详见 [引用静态资源](/guide/basic/static-assets)。
+
+`source.assetsInclude` 的值与 Rspack loader 的 `test` 选项相同，可以是正则表达式、字符串、数组、逻辑条件等，详见 [Rspack RuleSetCondition](https://rspack.dev/config/module#condition)。
+
+## 示例
+
+- 将 `.json5` 文件视为静态资源：
+
+```ts
+export default defineConfig({
+  source: {
+    assetsInclude: /\.json5$/,
+  },
+});
+```
+
+- 将多种文件类型视为静态资源：
+
+```ts
+export default defineConfig({
+  source: {
+    assetsInclude: [/\.json5$/, /\.pdf$/],
+  },
+});
+```
+
+- 将指定文件视为静态资源：
+
+```ts
+import path from 'node:path';
+
+export default defineConfig({
+  source: {
+    assetsInclude: path.resolve(__dirname, 'src/assets/foo.json5'),
+  },
+});
+```