fix: support additionalData (#3135)

packages/vite-plugin-uni/src/config/css.ts

@@ -3,12 +3,14 @@ import fs from 'fs-extra'
 import { UserConfig } from 'vite'
 import { VitePluginUniResolvedOptions } from '..'
 
-function resolveAdditionalData(inputDir: string) {
+function resolveAdditionalData(inputDir: string, config: UserConfig) {
   const uniScssFile = path.resolve(inputDir, 'uni.scss')
+  const userAdditionalData =
+    config.css?.preprocessorOptions?.scss?.additionalData || ''
   if (!fs.existsSync(uniScssFile)) {
-    return ''
+    return userAdditionalData
   }
-  return fs.readFileSync(uniScssFile, 'utf8')
+  return fs.readFileSync(uniScssFile, 'utf8') + '\n' + userAdditionalData
 }
 
 function resolvePostcssConfig(inputDir: string) {
@@ -19,14 +21,15 @@ function resolvePostcssConfig(inputDir: string) {
 }
 
 export function createCss(
-  options: VitePluginUniResolvedOptions
+  options: VitePluginUniResolvedOptions,
+  config: UserConfig
 ): UserConfig['css'] {
   return {
     postcss: resolvePostcssConfig(options.inputDir),
     preprocessorOptions: {
       scss: {
         charset: false,
-        additionalData: resolveAdditionalData(options.inputDir),
+        additionalData: resolveAdditionalData(options.inputDir, config),
       },
     },
   }

packages/vite-plugin-uni/src/config/index.ts

@@ -39,7 +39,7 @@ export function createConfig(
       logLevel: config.logLevel || 'warn',
       optimizeDeps: createOptimizeDeps(options),
       build: createBuild(options, config),
-      css: createCss(options),
+      css: createCss(options, config),
     }
   }
 }