=== tests/cases/conformance/types/objectTypeLiteral/callSignatures/callSignaturesWithOptionalParameters2.ts ===
// Optional parameters should be valid in all the below casts

function foo(x?: number);
>foo : (x?: number) => any
>x : number

function foo(x?: number) { }
>foo : (x?: number) => any
>x : number

foo(1);
>foo(1) : any
>foo : (x?: number) => any
>1 : number

foo();
>foo() : any
>foo : (x?: number) => any

function foo2(x: number);
>foo2 : { (x: number): any; (x: number, y?: number): any; }
>x : number

function foo2(x: number, y?: number);
>foo2 : { (x: number): any; (x: number, y?: number): any; }
>x : number
>y : number

function foo2(x: number, y?: number) { }
>foo2 : { (x: number): any; (x: number, y?: number): any; }
>x : number
>y : number

foo2(1);
>foo2(1) : any
>foo2 : { (x: number): any; (x: number, y?: number): any; }
>1 : number

foo2(1, 2);
>foo2(1, 2) : any
>foo2 : { (x: number): any; (x: number, y?: number): any; }
>1 : number
>2 : number

class C {
>C : C

    foo(x?: number);
>foo : (x?: number) => any
>x : number

    foo(x?: number) { }
>foo : (x?: number) => any
>x : number

    foo2(x: number);
>foo2 : { (x: number): any; (x: number, y?: number): any; }
>x : number

    foo2(x: number, y?: number);
>foo2 : { (x: number): any; (x: number, y?: number): any; }
>x : number
>y : number

    foo2(x: number, y?: number) { }
>foo2 : { (x: number): any; (x: number, y?: number): any; }
>x : number
>y : number
}

var c: C;
>c : C
>C : C

c.foo();
>c.foo() : any
>c.foo : (x?: number) => any
>c : C
>foo : (x?: number) => any

c.foo(1);
>c.foo(1) : any
>c.foo : (x?: number) => any
>c : C
>foo : (x?: number) => any
>1 : number

c.foo2(1);
>c.foo2(1) : any
>c.foo2 : { (x: number): any; (x: number, y?: number): any; }
>c : C
>foo2 : { (x: number): any; (x: number, y?: number): any; }
>1 : number

c.foo2(1, 2);
>c.foo2(1, 2) : any
>c.foo2 : { (x: number): any; (x: number, y?: number): any; }
>c : C
>foo2 : { (x: number): any; (x: number, y?: number): any; }
>1 : number
>2 : number

interface I {
>I : I

    (x?: number);
>x : number

    (x?: number, y?: number);
>x : number
>y : number

    foo(x: number, y?: number);
>foo : { (x: number, y?: number): any; (x: number, y?: number, z?: number): any; }
>x : number
>y : number

    foo(x: number, y?: number, z?: number);
>foo : { (x: number, y?: number): any; (x: number, y?: number, z?: number): any; }
>x : number
>y : number
>z : number
}

var i: I;
>i : I
>I : I

i();
>i() : any
>i : I

i(1);
>i(1) : any
>i : I
>1 : number

i(1, 2);
>i(1, 2) : any
>i : I
>1 : number
>2 : number

i.foo(1);
>i.foo(1) : any
>i.foo : { (x: number, y?: number): any; (x: number, y?: number, z?: number): any; }
>i : I
>foo : { (x: number, y?: number): any; (x: number, y?: number, z?: number): any; }
>1 : number

i.foo(1, 2);
>i.foo(1, 2) : any
>i.foo : { (x: number, y?: number): any; (x: number, y?: number, z?: number): any; }
>i : I
>foo : { (x: number, y?: number): any; (x: number, y?: number, z?: number): any; }
>1 : number
>2 : number

i.foo(1, 2, 3);
>i.foo(1, 2, 3) : any
>i.foo : { (x: number, y?: number): any; (x: number, y?: number, z?: number): any; }
>i : I
>foo : { (x: number, y?: number): any; (x: number, y?: number, z?: number): any; }
>1 : number
>2 : number
>3 : number

var a: {
>a : { (x?: number): any; (x?: number, y?: number): any; foo(x: number, y?: number): any; foo(x: number, y?: number, z?: number): any; }

    (x?: number);
>x : number

    (x?: number, y?: number);
>x : number
>y : number

    foo(x: number, y?: number);
>foo : { (x: number, y?: number): any; (x: number, y?: number, z?: number): any; }
>x : number
>y : number

    foo(x: number, y?: number, z?: number);
>foo : { (x: number, y?: number): any; (x: number, y?: number, z?: number): any; }
>x : number
>y : number
>z : number
}

a();
>a() : any
>a : { (x?: number): any; (x?: number, y?: number): any; foo(x: number, y?: number): any; foo(x: number, y?: number, z?: number): any; }

a(1);
>a(1) : any
>a : { (x?: number): any; (x?: number, y?: number): any; foo(x: number, y?: number): any; foo(x: number, y?: number, z?: number): any; }
>1 : number

a(1, 2);
>a(1, 2) : any
>a : { (x?: number): any; (x?: number, y?: number): any; foo(x: number, y?: number): any; foo(x: number, y?: number, z?: number): any; }
>1 : number
>2 : number

a.foo(1);
>a.foo(1) : any
>a.foo : { (x: number, y?: number): any; (x: number, y?: number, z?: number): any; }
>a : { (x?: number): any; (x?: number, y?: number): any; foo(x: number, y?: number): any; foo(x: number, y?: number, z?: number): any; }
>foo : { (x: number, y?: number): any; (x: number, y?: number, z?: number): any; }
>1 : number

a.foo(1, 2);
>a.foo(1, 2) : any
>a.foo : { (x: number, y?: number): any; (x: number, y?: number, z?: number): any; }
>a : { (x?: number): any; (x?: number, y?: number): any; foo(x: number, y?: number): any; foo(x: number, y?: number, z?: number): any; }
>foo : { (x: number, y?: number): any; (x: number, y?: number, z?: number): any; }
>1 : number
>2 : number

a.foo(1, 2, 3);
>a.foo(1, 2, 3) : any
>a.foo : { (x: number, y?: number): any; (x: number, y?: number, z?: number): any; }
>a : { (x?: number): any; (x?: number, y?: number): any; foo(x: number, y?: number): any; foo(x: number, y?: number, z?: number): any; }
>foo : { (x: number, y?: number): any; (x: number, y?: number, z?: number): any; }
>1 : number
>2 : number
>3 : number