Unnecessary escape character false possitive

[dbolton]

What version of this package are you using?
npx standard
also the linter-js-standard plugin for Atom

What operating system, Node.js, and npm version?
Windows 10
Node 10.16.3
npm 6.9.0

What happened?
The code var test = /[\]\[]/ produces two errors:
Unnecessary escape character: \[.
Unnecessary escape character: \].

What did you expect to happen?
There should be no error messages. This is not a matter of style. Taking out the escape character produces a very different result in JavaScript.

Are you willing to submit a pull request to fix this bug?
No

[mightyiam]

@dbolton thank you for your report. Under the hood, Standard uses ESLint. And this seems like the following rule:
https://eslint.org/docs/rules/no-useless-escape

Could you please report this upstream? By the way, I don't know regular expressions well, so I did not confirm that this is a bug indeed.

[mightyiam]

Thank you for following through, @dbolton.