"yarn test" in master branch fails on new installation

[psytechno604]

🐛 Bug Report

I just wanted to contribute. Followed the guide, and got:

> yarn test
yarn run v1.19.0
$ yarn lint && yarn jest
$ eslint . --cache --report-unused-disable-directives --ext js,jsx,ts,tsx,md

/Users/sergey/Documents/opensource/jest/packages/jest-haste-map/src/lib/FSEventsWatcher.ts
  14:1  error  Unused eslint-disable directive (no problems were reported)

✖ 1 problem (1 error, 0 warnings)

To make sure that it is not my fault, I repeated the same with other system, and got:

> yarn test
yarn run v1.19.0
$ yarn lint && yarn jest
$ eslint . --cache --report-unused-disable-directives --ext js,jsx,ts,tsx,md

/home/plazmer/Documents/jest/packages/jest-worker/src/workers/NodeThreadsWorker.ts
  11:1  error  Unused eslint-disable directive (no problems were reported from 'import/no-unresolved')

/home/plazmer/Documents/jest/packages/jest-worker/src/workers/threadChild.ts
  9:1  error  Unused eslint-disable directive (no problems were reported from 'import/no-unresolved')

✖ 2 problems (2 errors, 0 warnings)

So, as we can see, errors occur in different files, but in both cases they are linked to eslint. Maybe need to use specific version? Again - I did not made any changes in both cases, strictly following the given scenario.

To Reproduce

Steps to reproduce the behavior:
Just follow this guide from scratch - https://github.com/facebook/jest/blob/master/CONTRIBUTING.md

(I did this on two different systems and got eslint errors in both cases)

Expected behavior

"yarn test" should work without errors.

envinfo

1. System:
   OS: macOS 10.14.6
   CPU: (8) x64 Intel(R) Core(TM) i5-8279U CPU @ 2.40GHz
   Binaries:
   Node: 10.16.3 - /usr/local/bin/node
   Yarn: 1.19.0 - /usr/local/bin/yarn
   npm: 6.9.0 - /usr/local/bin/npm

2. System:
   OS: Linux 4.15 Ubuntu 16.04.6 LTS (Xenial Xerus)
   CPU: (1) x64 Intel(R) Core(TM) i5-6300HQ CPU @ 2.30GHz
   Binaries:
   Node: 11.14.0 - /usr/bin/node
   Yarn: 1.19.0 - /usr/bin/yarn
   npm: 6.9.2 - /usr/bin/npm

[thymikee]

I can reproduce this error on warm and cold eslint cache:

/Users/thymikee/Projects/oss/jest/packages/jest-haste-map/src/lib/FSEventsWatcher.ts
  14:1  error  Unused eslint-disable directive (no problems were reported)

Not sure why it differs from the CI.

I'm curious though, how you manage to run yarn 1.19, when we explicitly set yarn-path to v1.17 bundled locally in .yarnrc file?

[psytechno604]

I thought that yarn version was the reason, so I upgraded it. Nevertheless, with 1.17 everything is the same on both systems. Just now reverted back to 1.17 and tested again.

[github-actions]

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