Invalid option '--ext' - perhaps you meant '-c'?

Environment

Node version: v16.18.1 npm version: 8.19.2 Local ESLint version: 8.27.0 Global ESLint version: N/A Operating System: Mac OS X

What parser are you using?

@typescript-eslint/parser

What did you do?

Configuration

N/A

N/A

What did you expect to happen?

Running eslint --ext .ts should find and lint TypeScript files.

What actually happened?

Running eslint --ext .ts produces this error:

Invalid option '--ext' - perhaps you meant '-c'?

Participation

I am willing to submit a pull request for this issue.

Additional comments

Reverting to v8.17.0 fixes the issue. Not sure which version broke this.

Issue Analytics

State:
Created 10 months ago
Comments:8 (4 by maintainers)

Top GitHub Comments

1reaction

mdjermanoviccommented, Nov 17, 2022

That’s correct, the command should have at least one file/directory/pattern argument. Otherwise, it won’t lint anything.

However, it shouldn’t throw Invalid option '--ext' as in the original issue. This is most likely a problem with switching to the flat config mode, perhaps there’s an eslint.config.js file in the same directory or in a parent directory.

1reaction

ljharbcommented, Nov 17, 2022

I think what you want is eslint --ext=.ts . so that it looks everywhere in the current directory (iow, the location to search, as @einojokipii said)

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