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Adding ignore-path flag referencing a file in node_modules not respecting ignore config

See original GitHub issue

Tell us about your environment

ESLint Version: 4.6.1 (latest)
Node Version: 8.4.0 (latest)
npm Version: 5.4.0 (latest)

What parser (default, Babel-ESLint, etc.) are you using? N/A

Please show your full configuration: N/A

Configuration

{}

What did you do? Please include the actual source code causing the issue.

eslint --ignore-path node_modules/kcd-scripts/dist/config/eslintignore .

What did you expect to happen?

I expected the eslintignore to be applied

What actually happened? Please include the actual, raw output from ESLint.

It is not. I get an error indicating that eslint is processing files in node_modules.

Here’s the contents of node_modules/kcd-scripts/dist/config/eslintignore:

node_modules
coverage
dist
build
out
.next

I think that the docs indicate that the patterns here will be relative to the .eslintignore file, so I changed the eslintignore file to various patterns (including ../../../node_modules/, **/node_modules/**). None of those combinations seemed to work. I think there may be a bug here, but I’m uncertain… Happy to dig in more if someone can tell me I’m not missing something obvious.

To reproduce: https://github.com/kentcdodds/eslint-config-issue

Install deps and run npm run broken and npm run working.

Thanks!