=== tests/cases/compiler/functionOverloads10.ts ===
function foo(foo:string, bar:number);
>foo : { (foo: string, bar: number): any; (foo: string): any; }, Symbol(foo, Decl(functionOverloads10.ts, 0, 0), Decl(functionOverloads10.ts, 0, 37), Decl(functionOverloads10.ts, 1, 25))
>foo : string, Symbol(foo, Decl(functionOverloads10.ts, 0, 13))
>bar : number, Symbol(bar, Decl(functionOverloads10.ts, 0, 24))

function foo(foo:string);
>foo : { (foo: string, bar: number): any; (foo: string): any; }, Symbol(foo, Decl(functionOverloads10.ts, 0, 0), Decl(functionOverloads10.ts, 0, 37), Decl(functionOverloads10.ts, 1, 25))
>foo : string, Symbol(foo, Decl(functionOverloads10.ts, 1, 13))

function foo(foo:any){ }
>foo : { (foo: string, bar: number): any; (foo: string): any; }, Symbol(foo, Decl(functionOverloads10.ts, 0, 0), Decl(functionOverloads10.ts, 0, 37), Decl(functionOverloads10.ts, 1, 25))
>foo : any, Symbol(foo, Decl(functionOverloads10.ts, 2, 13))