=== tests/cases/conformance/es6/defaultParameters/emitDefaultParametersFunctionES6.ts ===
function foo(x: string, y = 10) { }
>foo : (x: string, y?: number) => void
>x : string
>y : number
>10 : number

function baz(x: string, y = 5, ...rest) { }
>baz : (x: string, y?: number, ...rest: any[]) => void
>x : string
>y : number
>5 : number
>rest : any[]

function bar(y = 10) { }
>bar : (y?: number) => void
>y : number
>10 : number

function bar1(y = 10, ...rest) { }
>bar1 : (y?: number, ...rest: any[]) => void
>y : number
>10 : number
>rest : any[]