New rule: No unnecessary regex global flags

[tom-sherman]

I recently came across an ugly pattern in Regex regarding the g flag. See here for details: https://stackoverflow.com/questions/2630418/javascript-regex-returning-true-then-false-then-true-etc

Would have been nice for the linter to warn that I'm using a global flag when I was using ^ and $ characters at the beginning and end of the regex.

Thoughts?

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.

[LinusU]

This sounds very nice! @tom-sherman, is there an existing ESLint rule for this?

[tom-sherman]

@LinusU It doesn't look to be. Should I create an issue in ESlint to discuss adding it?

[LinusU]

Yes please ☺️

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.