=== tests/cases/conformance/es6/arrowFunction/emitArrowFunctionES6.ts ===
var f1 = () => { }
>f1 : () => void
>() => { } : () => void

var f2 = (x: string, y: string) => { }
>f2 : (x: string, y: string) => void
>(x: string, y: string) => { } : (x: string, y: string) => void
>x : string
>y : string

var f3 = (x: string, y: number, ...rest) => { }
>f3 : (x: string, y: number, ...rest: any[]) => void
>(x: string, y: number, ...rest) => { } : (x: string, y: number, ...rest: any[]) => void
>x : string
>y : number
>rest : any[]

var f4 = (x: string, y: number, z=10) => { }
>f4 : (x: string, y: number, z?: number) => void
>(x: string, y: number, z=10) => { } : (x: string, y: number, z?: number) => void
>x : string
>y : number
>z : number

function foo(func: () => boolean) { }
>foo : (func: () => boolean) => void
>func : () => boolean

foo(() => true);
>foo(() => true) : void
>foo : (func: () => boolean) => void
>() => true : () => boolean

foo(() => { return false; });
>foo(() => { return false; }) : void
>foo : (func: () => boolean) => void
>() => { return false; } : () => boolean