=== tests/cases/conformance/es6/computedProperties/computedPropertyNamesContextualType1_ES5.ts ===
interface I {
>I : I

    [s: string]: (x: string) => number;
>s : string
>x : string

    [s: number]: (x: any) => number; // Doesn't get hit
>s : number
>x : any
}

var o: I = {
>o : I
>I : I
>{    ["" + 0](y) { return y.length; },    ["" + 1]: y => y.length} : { [x: string]: (y: string) => number; [x: number]: undefined; }

    ["" + 0](y) { return y.length; },
>"" + 0 : string
>"" : string
>0 : number
>y : string
>y.length : number
>y : string
>length : number

    ["" + 1]: y => y.length
>"" + 1 : string
>"" : string
>1 : number
>y => y.length : (y: string) => number
>y : string
>y.length : number
>y : string
>length : number
}