Warnings In Tests When Using createLocalVue() From vue-test-utils

[ccaspers]

When using any of the 1.0.0 betas, a lot of warnings get printed during tests. This is caused by code like this:

import VueCompositionAPI from "@vue/composition-api";
import { createLocalVue } from "@vue/test-utils";
import range from "lodash/range";
import { VueConstructor } from "vue";

describe("warnings", () => {
  let localVue: VueConstructor;

  beforeEach(() => {
    localVue = createLocalVue();
    localVue.use(VueCompositionAPI);
  });

  test.each(range(5))("create localVue 5 times", () => {
    expect(localVue).toBeDefined();
  });
});

The printed warning will look like this:

 [Vue warn]: Another instance of vue installed

Is there anything that could be done to silence those warnings? The issue seems to be related to #492