=== tests/cases/compiler/arguments.ts ===
function f() {
>f : () => void, Symbol(f, Decl(arguments.ts, 0, 0))

    var x=arguments[12];
>x : any, Symbol(x, Decl(arguments.ts, 1, 7))
>arguments[12] : any
>arguments : IArguments, Symbol(arguments)
>12 : number
}