var fn = (a, b = 1, ...other) => {
		doSomething(a);
		return b;
	};
/**************************************************/
var fn=(a,b=1,...other)=>{doSomething(a);return b;};
/**************************************************/
var fn = ( a, b = 1, ...other ) =>
	{
		doSomething( a );
		return b;
	};