Run unit test HelloWorld failed

[smoothdvd]

Version

3.0.0-rc.12

Node and OS info

Node 10.8.0 / yarn 1.9.4 / macOS 10.13.6

Steps to reproduce

1. Create new project with Mocha Chai
2. yarn run test:unit

What is expected?

Pass unit test

What is actually happening?

WEBPACK Failed to compile with 1 error(s)

Error in ./src/components/HelloWorld.vue

Module build failed (from ./node_modules/vue-loader/lib/index.js):
TypeError: Super expression must either be null or a function
at /Users/alexgao/Dev/vue-webpack/node_modules/prettier/index.js:32893:5
at /Users/alexgao/Dev/vue-webpack/node_modules/prettier/index.js:32913:4

ERROR mocha-webpack exited with code 1.
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

[yyx990803]

For some reason downgrading to prettier 1.13.7 works.

[yyx990803]

Fixed by pinning prettier to 1.13.7 in @vue/component-compiler-utils. Remove your node_modules and lockfile and re-install should fix the problem.

[smoothdvd]

@yyx990803 Thanks! Just do it now.

[yerol]

Works with Prettier version 1.14.0 as well. 1.14.1 has a breaking change.

[haoqunjiang]

FYI it is a jsdom-global & rollup issue.

vuejs/vue-test-utils#936

[sagaban]

I fixed it adding to my package.json "resolutions":{ "@vue/eslint-config-prettier/prettier": "1.13.7" }

[themathmagician]

I am getting the same error. Adding the resolution above does not fix it?