=== tests/cases/compiler/objectIndexer.ts ===
export interface Callback {
>Callback : Callback, Symbol(Callback, Decl(objectIndexer.ts, 0, 0))

    (value: any): void;
>value : any, Symbol(value, Decl(objectIndexer.ts, 1, 5))
}

interface IMap {
>IMap : IMap, Symbol(IMap, Decl(objectIndexer.ts, 2, 1))

    [s: string]: Callback;
>s : string, Symbol(s, Decl(objectIndexer.ts, 5, 5))
>Callback : Callback, Symbol(Callback, Decl(objectIndexer.ts, 0, 0))
}

class Emitter {
>Emitter : Emitter, Symbol(Emitter, Decl(objectIndexer.ts, 6, 1))

    private listeners: IMap;
>listeners : IMap, Symbol(listeners, Decl(objectIndexer.ts, 8, 15))
>IMap : IMap, Symbol(IMap, Decl(objectIndexer.ts, 2, 1))

    constructor () {
        this.listeners = {};
>this.listeners = {} : { [x: string]: undefined; }
>this.listeners : IMap, Symbol(listeners, Decl(objectIndexer.ts, 8, 15))
>this : Emitter, Symbol(Emitter, Decl(objectIndexer.ts, 6, 1))
>listeners : IMap, Symbol(listeners, Decl(objectIndexer.ts, 8, 15))
>{} : { [x: string]: undefined; }
    }
}