Fix Vite warnings

package.json

@@ -4,6 +4,7 @@
   "homepage": "https://github.com/owncloud/web",
   "license": "AGPL-3.0",
   "author": "ownCloud GmbH <[email protected]>",
+  "type": "module",
   "scripts": {
     "build": "vue-demi-fix && pnpm build:tokens && pnpm vite build",
     "build:w": "pnpm build --watch",

tests/unit/config/jest.config.ts

@@ -1,6 +1,6 @@
 import type { Config } from 'jest'
 import path from 'path'
-import { compilerOptions } from '../../../vite.config'
+import { compilerOptions } from '../../../vite.config.common'
 const rootDir = path.resolve(__dirname, '../../../')
 
 // We need to transpile these modules as they are using esm syntax

vite.config.common.ts

@@ -0,0 +1,7 @@
+// this file contains settings shared with jest
+
+import { CompilerOptions } from '@vue/compiler-sfc'
+
+export const compilerOptions: CompilerOptions = {
+  whitespace: 'preserve'
+}

vite.config.ts

@@ -13,19 +13,15 @@ import { existsSync, readdirSync, readFileSync } from 'fs'
 
 // build config
 import packageJson from './package.json'
+import { compilerOptions } from './vite.config.common'
 import { getUserAgentRegExp } from 'browserslist-useragent-regexp'
 import browserslistToEsbuild from 'browserslist-to-esbuild'
-import { CompilerOptions } from '@vue/compiler-sfc'
 import fetch from 'node-fetch'
 import { Agent } from 'https'
 
 // ignoredPackages specifies which packages should be explicitly ignored and thus not be transpiled
 const ignoredPackages = ['web-app-skeleton']
 
-export const compilerOptions: CompilerOptions = {
-  whitespace: 'preserve'
-}
-
 const buildConfig = {
   requirejs: {},
   cdn: process.env.CDN === 'true',
@@ -97,7 +93,7 @@ export const historyModePlugins = () =>
     {
       name: 'base-href',
       transformIndexHtml: {
-        transform() {
+        handler() {
           return [
             {
               injectTo: 'head-prepend',