=== tests/cases/compiler/contextualTyping13.ts ===
var foo:(a:number)=>number = function(a){return a};
>foo : (a: number) => number, Symbol(foo, Decl(contextualTyping13.ts, 0, 3))
>a : number, Symbol(a, Decl(contextualTyping13.ts, 0, 9))
>function(a){return a} : (a: number) => number
>a : number, Symbol(a, Decl(contextualTyping13.ts, 0, 38))
>a : number, Symbol(a, Decl(contextualTyping13.ts, 0, 38))