stub `prototype` and `optionMergeStrategies` for vue3 compat

[tobiasdiez]

Environment

• Operating System: Linux
• Node Version: v14.18.1
• Nuxt Version: 2.16.0-27285136.ab1c6cb4
• Package Manager: yarn@1.22.17
• Bundler: Webpack
• User Config: plugins, bridge, target, ssr, buildModules
• Runtime Modules: -
• Build Modules: @nuxt/bridge@3.0.0-27286006.a08b435

Reproduction

https://codesandbox.io/s/gracious-wildflower-g27zf

Describe the bug

The vueApp provided by nuxtApp in a plugin doesn't mock all vue properties, which make some libraries fail. I encountered so far prototype (with VueTailwind, as in the reproduction above) and config.optionMergeStrategies (with VueApollo).

Additional context

--- a/node_modules/@nuxt/bridge/dist/runtime/app.plugin.mjs
+++ b/node_modules/@nuxt/bridge/dist/runtime/app.plugin.mjs
@@ -23,7 +23,8 @@ export default (ctx, inject) => {
     vueApp: {
       component: Vue.component.bind(Vue),
       config: {
-        globalProperties: {}
+        globalProperties: {},
+        optionMergeStrategies: Vue.config.optionMergeStrategies
       },
       directive: Vue.directive.bind(Vue),
       mixin: Vue.mixin.bind(Vue),
@@ -33,7 +34,8 @@ export default (ctx, inject) => {
       use (vuePlugin) {
         vuePlugin.install(this)
       },
-      version: Vue.version
+      version: Vue.version,
+      prototype: {}
     },
     provide: inject,
     globalName: 'nuxt',

fixed it for me.

Logs

No response