fix: support ignoreBrowserslistConfig

README.md

@@ -71,6 +71,18 @@ npm add -D terser
 
   Note: if additional polyfills are needed for both the modern and legacy chunks, they can simply be imported in the application source code.
 
+### `ignoreBrowserslistConfig`
+
+- **Type:** `boolean`
+- **Default:** `false`
+
+  The legacy plugin automatically detects [`browserslist` config sources](https://github.com/browserslist/browserslist#browserslist-):
+
+  - `browserslist` field in `package.json`
+  - `.browserslistrc` file in cwd.
+
+  Set to `false` to ignore these sources.
+
 ### `modernPolyfills`
 
 - **Type:** `boolean | string[]`

src/index.ts

@@ -304,7 +304,11 @@ function viteLegacyPlugin(options: Options = {}): Plugin[] {
       targets
         = options.targets
         // eslint-disable-next-line @typescript-eslint/prefer-nullish-coalescing
-        || browserslistLoadConfig({ path: resolvedConfig.root })
+        || (
+          options.ignoreBrowserslistConfig
+            ? undefined
+            : browserslistLoadConfig({ path: resolvedConfig.root })
+        )
         // eslint-disable-next-line @typescript-eslint/prefer-nullish-coalescing
         || 'last 2 versions and not dead, > 0.3%, Firefox ESR'
       if (isDebug) {

src/types.ts

@@ -3,6 +3,10 @@ export interface Options {
    * default: 'defaults'
    */
   targets?: string | string[] | Record<string, string>,
+  /**
+   * default: false
+   */
+  ignoreBrowserslistConfig?: boolean,
   /**
    * default: true
    */