warning File ignored because of a matching ignore pattern. Use "--no-ignore" to override code example
Example: file ignored because of a matching ignore pattern. use "--no-ignore" to override
One workaround I know at the moment is --quiet option, which suppresses all warnings. Of course that doesn't make sense if you have "warn" rules in your config.
Another way not to show that warning is to use dir names: eslint src instead of globbing patterns: eslint src/*.