feat(swc): allow input files to be filtered

packages/swc/README.md

@@ -48,7 +48,11 @@ Then call `rollup` either via the [CLI](https://www.rollupjs.org/guide/en/#comma
 ## Options
 
 The plugin accepts an object as input parameter to modify the default behaviour.
-This object has an `swc` property to provide library specific [Options](https://swc.rs/docs/configuration/swcrc).
+
+### `swc`
+
+- Type: [Options](https://swc.rs/docs/configuration/swcrc)
+- Default: `undefined`
 
 ```typescript
 import type { Options as SWCOptions } from '@swc/core';
@@ -58,6 +62,22 @@ declare type Options = {
 };
 ```
 
+### `exclude`
+
+- Type: `String` | `Array[...String]`
+- Default: `null`
+
+A [picomatch pattern](https://github.com/micromatch/picomatch),
+or array of patterns, which specifies the files in the build the plugin should _ignore_. By default no files are ignored.
+
+### `include`
+
+- Type: `String` | `Array[...String]`
+- Default: `null`
+
+A [picomatch pattern](https://github.com/micromatch/picomatch),
+or array of patterns, which specifies the files in the build the plugin should operate on. By default all files are targeted.
+
 ## Alternatives
 
 Alternative transpiler/transformer, which are also officially offered, are [Babel](https://www.npmjs.com/package/@rollup/plugin-babel) and [Sucrase](https://www.npmjs.com/package/@rollup/plugin-sucrase).

packages/swc/package.json

@@ -62,10 +62,11 @@
     }
   },
   "dependencies": {
-    "smob": "^1.0.0"
+    "@rollup/pluginutils": "^5.0.1",
+    "smob": "^1.4.0"
   },
   "devDependencies": {
-    "@swc/core": "^1.3.58",
+    "@swc/core": "^1.3.78",
     "rollup": "^3.0.0-7",
     "typescript": "^4.8.3"
   },

packages/swc/src/module.ts

@@ -1,11 +1,14 @@
 import type { Plugin } from 'rollup';
+import { createFilter } from '@rollup/pluginutils';
 import type { Options as SWCOptions } from '@swc/core';
 import { transform } from '@swc/core';
 import { merge } from 'smob';
 
 import type { Options } from './type';
 
 export function swc(input: Options = {}): Plugin {
+  const filter = createFilter(input.include, input.exclude);
+
   const swcOptions: SWCOptions = merge({}, input.swc || {}, {
     jsc: {
       target: 'es2020',
@@ -23,7 +26,9 @@ export function swc(input: Options = {}): Plugin {
 
   return {
     name: 'swc',
-    transform(code) {
+    transform(code, id) {
+      if (!filter(id)) return null;
+
       return transform(code, {
         ...swcOptions,
         sourceMaps: true

packages/swc/src/type.ts

@@ -1,5 +1,10 @@
+import type { FilterPattern } from '@rollup/pluginutils';
 import type { Options as SWCOptions } from '@swc/core';
 
 export interface Options {
   swc?: SWCOptions;
+
+  include?: FilterPattern;
+
+  exclude?: FilterPattern;
 }