Mocha Tests Throwing Exceptions Immediately After Project Creation When Manually Selecting Features

[derek-baker]

Version

3.5.1

Reproduction link

https://github.com/derek-baker/super-duper-guacamole

Environment info

System:
    OS: Windows 10
    CPU: (4) x64 Intel(R) Core(TM) i5-5300U CPU @ 2.30GHz
  Binaries:
    Node: 10.15.1 - C:\Program Files\nodejs\node.EXE
    Yarn: Not Found
    npm: 6.4.1 - C:\Program Files\nodejs\npm.CMD
  Browsers:
    Edge: 42.17134.1.0
  npmGlobalPackages:
    @vue/cli: Not Found

Steps to reproduce

npm run test:unit

What is expected?

Out of box vue-cli config produces a unit test that runs without an exception

What is actually happening?

WEBPACK Compiled successfully in 7321ms

MOCHA Testing...

RUNTIME EXCEPTION Exception occurred while loading your tests

ReferenceError: performance is not defined
at Module../node_modules/vue/dist/vue.runtime.esm.js

[derek-baker]

In regards to the Environment Info, I'm not sure why 'vue info' doesn't find @vue/cli, as it's definitely installed globally, and %appdata%\npm was added to my path.

[derek-baker]

Image of options manually selected after running 'vue create'

[derek-baker]

If, in addition to the options above, I opt to include Babel as a feature, and also use Babel alongside TypeScript for auto-detected polyfills, the unit-test runs as expected. Example of working config is below.

{
"name": "vue-cli-test",
"version": "0.1.0",
"private": true,
"scripts": {
"serve": "vue-cli-service serve",
"build": "vue-cli-service build",
"lint": "vue-cli-service lint",
"test:e2e": "vue-cli-service test:e2e",
"test:unit": "vue-cli-service test:unit"
},
"dependencies": {
"vue": "^2.6.6",
"vue-class-component": "^6.0.0",
"vue-property-decorator": "^7.0.0",
"vue-router": "^3.0.1",
"vuex": "^3.0.1"
},
"devDependencies": {
"@types/chai": "^4.1.0",
"@types/mocha": "^5.2.4",
"@vue/cli-plugin-babel": "^3.5.0",
"@vue/cli-plugin-e2e-cypress": "^3.5.0",
"@vue/cli-plugin-typescript": "^3.5.0",
"@vue/cli-plugin-unit-mocha": "^3.5.0",
"@vue/cli-service": "^3.5.0",
"@vue/test-utils": "1.0.0-beta.29",
"chai": "^4.1.2",
"typescript": "^3.2.1",
"vue-template-compiler": "^2.5.21"
}
}