=== tests/cases/compiler/contextualTyping23.ts ===
var foo:(a:{():number; (i:number):number; })=>number; foo = function(a){return 5};
>foo : Symbol(foo, Decl(contextualTyping23.ts, 0, 3))
>a : Symbol(a, Decl(contextualTyping23.ts, 0, 9))
>i : Symbol(i, Decl(contextualTyping23.ts, 0, 24))
>foo : Symbol(foo, Decl(contextualTyping23.ts, 0, 3))
>a : Symbol(a, Decl(contextualTyping23.ts, 0, 69))