test: add vitest-environment-nuxt (#1186)

vitest.config.ts

@@ -1,31 +0,0 @@
-import { resolve } from 'path'
-import { defineConfig } from 'vitest/config'
-import Vue from '@vitejs/plugin-vue'
-import AutoImport from 'unplugin-auto-import/vite'
-
-export default defineConfig({
-  resolve: {
-    alias: {
-      '~/': `${resolve(__dirname)}/`,
-    },
-  },
-  define: {
-    'process.server': 'false',
-    'process.client': 'true',
-  },
-  plugins: [
-    Vue({
-      reactivityTransform: true,
-    }),
-    AutoImport({
-      dts: false,
-      imports: [
-        'vue',
-        '@vueuse/core',
-      ],
-      dirs: [
-        'composables',
-      ],
-    }),
-  ],
-})