fix(nvue): preprocess scss

packages/vue-cli-plugin-uni/packages/sass-loader/dist/index.js

@@ -35,7 +35,6 @@ function loader(content) {
   const options = (0, _loaderUtils.getOptions)(this) || {};
   // fixed by xxxxxx
   const isNVue = !!options.nvue;
-  delete options.nvue;
   (0, _schemaUtils.default)(_options.default, options, {
     name: 'Sass Loader',
     baseDataPath: 'options'

packages/vue-cli-plugin-uni/packages/sass-loader/dist/options.json

@@ -35,6 +35,10 @@
     "webpackImporter": {
       "description": "Enables/Disables default `webpack` importer (https://github.com/webpack-contrib/sass-loader#webpackimporter).",
       "type": "boolean"
+    },
+    "nvue": {
+      "description": "nvue",
+      "type": "boolean"
     }
   },
   "additionalProperties": false