ESLint Parsing error: Export 'SimpleSet' is not defined

[rhengles]

Version

2.6.10

Reproduction link

https://github.com/vuejs/vue

Steps to reproduce

npm run lint


vue@2.6.10 lint /mnt/c/vue
> eslint src scripts test


/mnt/c/vue/src/core/util/env.js
  97:15  error  Parsing error: Export 'SimpleSet' is not defined

  95 | 
  96 | export { _Set }
> 97 | export type { SimpleSet }
     |               ^
  98 | 

✖ 1 problem (1 error, 0 warnings)

What is expected?

Test suite run successfully

What is actually happening?

Test suite doesn't even run because eslint has parse error

[yyx990803]

1. Invalid reproduction (it will be closed again if you don't bother providing a valid repro)
2. Wrong repository (this is a vue-cli issue)

[rhengles]

@yyx990803

I honestly don't know of a better reproduction link. If you run this:

$ git clone https://github.com/vuejs/vue.git

$ cd vue

$ npm install

$ npm run lint

Then the error occurs. It's impossible to even make a commit, because the git commit hook runs eslint on the code, which is failing. There is no other source, it's the own Vue codebase and its dependencies. Maybe eslint needs to be updated, maybe Typescript, but I simply don't know how to solve this yet.

One thing I can guarantee is that this has absolutely nothing to do with vue-cli. This errors occurs in this repository.

Thank you and have a great day. I hope everything is going well with you.

[yyx990803]

Oh looks like this is caused by some dependency update. (Please specify the exact steps in the original issue because it was confusing)

[swordrain]

Oh, I met exactly the same problem.

@yyx990803 , Is this information enough?

[mitar]

I also hit the same problem. Using node v11.15.0. Doing more or less what people wrote above. Clone, npm install, npm test.

[mitar]

It happened even in CI for me: https://circleci.com/gh/meteor-vue/vue/151