react-scripts build ignores ESLint overrides

Created by: osdiab

Bringing back #8266 (closed) as something that I'm experiencing now.

Describe the bug

I made a lint rule that applies everywhere but want to exclude it for a directory. ESLint supports the overrides option to achieve this but react-scripts build ignores that and applies the rule anyway with EXTEND_ESLINT=true option

Did you try recovering your dependencies?

irrelevant

Which terms did you search for in User Guide?

extend eslint overrides lint

Environment

Environment Info:

  System:
    OS: macOS 10.15.3
    CPU: (4) x64 Intel(R) Core(TM) i5-8210Y CPU @ 1.60GHz
  Binaries:
    Node: 12.14.1 - ~/.nvm/versions/node/v12.14.1/bin/node
    Yarn: 1.22.4 - /usr/local/bin/yarn
    npm: 6.13.4 - ~/.nvm/versions/node/v12.14.1/bin/npm
  Browsers:
    Chrome: 80.0.3987.149
    Firefox: 74.0
    Safari: 13.0.5
  npmPackages:
    react: Not Found
    react-dom: Not Found
    react-scripts: Not Found
  npmGlobalPackages:
    create-react-app: Not Found

Steps to reproduce

Make a CRA app
add EXTEND_ESLINT=true to your invocation of react-scripts
Make an ESLint file with a rule, and an override for that rule in with the overrides property
Make a file that breaks the rule but should be overridden
run react-scripts dev or react-scripts build and see that CRA complains anyway

Expected behavior

It respects the rule

Actual behavior

It doesn't