Rule for function expressions to be arrow functions or not

With ES6 arrow functions, it would be useful to have a rule that allows you to configure some consistency in function expressions. For example you could specify whether you want to use standard functions

someFunc(function() { doStuff(); });

Or use ES6 arrow functions.

someFunc(() => { doStuff(); });

And it would warn when it finds one in the wrong style. Of course since generators can’t be arrow functions this rule wouldn’t apply to them, they’d still look like

someFunc(function *() { yield doStuff(); });

[IanVS]

I am 👎 as arrow functions are not a blind replacement for all function expressions (lexical binding of this, super, and arguments). See some discussion in https://github.com/eslint/eslint/issues/3357 as well as commentary about when it may or may not be appropriate to use arrows in https://github.com/getify/You-Dont-Know-JS/blob/master/es6 & beyond/ch2.md#arrow-functions.

[gyandeeps]

@rightaway I think we are going to close this issue for now. Feel free to create a plugin and use it. We can always check back in future if things change. Thanks. Resources: http://eslint.org/docs/developer-guide/working-with-plugins