=== tests/cases/compiler/topLevelLambda2.ts ===
function foo(x:any) {}
>foo : Symbol(foo, Decl(topLevelLambda2.ts, 0, 0))
>x : Symbol(x, Decl(topLevelLambda2.ts, 0, 13))

foo(()=>this.window);
>foo : Symbol(foo, Decl(topLevelLambda2.ts, 0, 0))