Improve the report location of arrow-paren

[golopot]

What rule do you want to change?
arrow-paren

Currently the reported node is the whole function. It makes sense to change the reported node to the parameter node.

/* eslint arrow-parens: [2] */

// current report location
const f = a => a + a + a;
//        ~~~~~~~~~~~~~~ Error: needs parens.

// proposed report location
const f = a => a + a + a;
//        ~              Error: needs parens.

demo link

Are you willing to submit a pull request to implement this change?
yes

[not-an-aardvark]

Thanks for the proposal. This seems like a worthwhile change to me.

[platinumazure]

I agree this should be done. I'll champion this change.

@eslint/eslint-team This needs one more 👍 to be accepted.

[not-an-aardvark]

This is now accepted.