refactor: refactor sass plugin

Author: soilSpoon

plugins/sass.ts

@@ -1,26 +1,9 @@
 import { Options, renderSync } from 'https://esm.sh/[email protected]'
 
-const defaultPlugin = {
+const pluginFactory = (opts: Options = {}) => ({
     name: 'sass-loader',
     test: /.(sass|scss)$/,
     acceptHMR: true,
-    transform(content: Uint8Array, path: string) {
-        const ret = renderSync({
-            file: path,
-            data: (new TextDecoder).decode(content),
-            sourceMap: true,
-            indentedSyntax: path.endsWith('.sass')
-        })
-        return {
-            code: (new TextDecoder).decode(ret.css),
-            map: ret.map ? (new TextDecoder).decode(ret.map) : undefined,
-            loader: 'css'
-        }
-    }
-}
-
-const pluginFactory = (opts: Options) => ({
-    ...defaultPlugin,
     transform(content: Uint8Array, path: string) {
         const ret = renderSync({
             indentedSyntax: path.endsWith('.sass'),
@@ -37,6 +20,8 @@ const pluginFactory = (opts: Options) => ({
     }
 })
 
+const defaultPlugin = pluginFactory()
+
 pluginFactory.displayName = defaultPlugin.name
 pluginFactory.test = defaultPlugin.test
 pluginFactory.acceptHMR = defaultPlugin.acceptHMR