[mattbriggs]

the this keyword still works exactly the same, just a terse syntax for functions and for function binding to the current scope.

currently, function(){} is the exact same as the proposed ()->{}, and (function(){}).bind(this) is the exact same as ()=>{}

[starwed]

This is not just about syntax. Unless using bind somehow grants the mentioned property that

>"Fat arrow functions do not have prototype properties, which makes them cheaper to make. They are immutable."

[mattbriggs]

granted, but that sounds more like a micro optimization rather then significantly changing the behavior of the language