=== tests/cases/compiler/underscoreMapFirst.ts ===
declare module _ {
>_ : Symbol(_, Decl(underscoreMapFirst.ts, 0, 0))

    interface Collection<T> { }
>Collection : Symbol(Collection, Decl(underscoreMapFirst.ts, 0, 18))
>T : Symbol(T, Decl(underscoreMapFirst.ts, 1, 25))

    interface List<T> extends Collection<T> {
>List : Symbol(List, Decl(underscoreMapFirst.ts, 1, 31))
>T : Symbol(T, Decl(underscoreMapFirst.ts, 2, 19))
>Collection : Symbol(Collection, Decl(underscoreMapFirst.ts, 0, 18))
>T : Symbol(T, Decl(underscoreMapFirst.ts, 2, 19))

        [index: number]: T;
>index : Symbol(index, Decl(underscoreMapFirst.ts, 3, 9))
>T : Symbol(T, Decl(underscoreMapFirst.ts, 2, 19))

        length: number;
>length : Symbol(length, Decl(underscoreMapFirst.ts, 3, 27))
    }

    interface ListIterator<T, TResult> {
>ListIterator : Symbol(ListIterator, Decl(underscoreMapFirst.ts, 5, 5))
>T : Symbol(T, Decl(underscoreMapFirst.ts, 7, 27))
>TResult : Symbol(TResult, Decl(underscoreMapFirst.ts, 7, 29))

        (value: T, index: number, list: T[]): TResult;
>value : Symbol(value, Decl(underscoreMapFirst.ts, 8, 9))
>T : Symbol(T, Decl(underscoreMapFirst.ts, 7, 27))
>index : Symbol(index, Decl(underscoreMapFirst.ts, 8, 18))
>list : Symbol(list, Decl(underscoreMapFirst.ts, 8, 33))
>T : Symbol(T, Decl(underscoreMapFirst.ts, 7, 27))
>TResult : Symbol(TResult, Decl(underscoreMapFirst.ts, 7, 29))
    }

    interface Dictionary<T> extends Collection<T> {
>Dictionary : Symbol(Dictionary, Decl(underscoreMapFirst.ts, 9, 5))
>T : Symbol(T, Decl(underscoreMapFirst.ts, 11, 25))
>Collection : Symbol(Collection, Decl(underscoreMapFirst.ts, 0, 18))
>T : Symbol(T, Decl(underscoreMapFirst.ts, 11, 25))

        [index: string]: T;
>index : Symbol(index, Decl(underscoreMapFirst.ts, 12, 9))
>T : Symbol(T, Decl(underscoreMapFirst.ts, 11, 25))
    }
    export function pluck<T extends {}>(
>pluck : Symbol(pluck, Decl(underscoreMapFirst.ts, 13, 5))
>T : Symbol(T, Decl(underscoreMapFirst.ts, 14, 26))

        list: Collection<T>,
>list : Symbol(list, Decl(underscoreMapFirst.ts, 14, 40))
>Collection : Symbol(Collection, Decl(underscoreMapFirst.ts, 0, 18))
>T : Symbol(T, Decl(underscoreMapFirst.ts, 14, 26))

        propertyName: string): any[];
>propertyName : Symbol(propertyName, Decl(underscoreMapFirst.ts, 15, 28))

    export function map<T, TResult>(
>map : Symbol(map, Decl(underscoreMapFirst.ts, 16, 37))
>T : Symbol(T, Decl(underscoreMapFirst.ts, 18, 24))
>TResult : Symbol(TResult, Decl(underscoreMapFirst.ts, 18, 26))

        list: List<T>,
>list : Symbol(list, Decl(underscoreMapFirst.ts, 18, 36))
>List : Symbol(List, Decl(underscoreMapFirst.ts, 1, 31))
>T : Symbol(T, Decl(underscoreMapFirst.ts, 18, 24))

        iterator: ListIterator<T, TResult>,
>iterator : Symbol(iterator, Decl(underscoreMapFirst.ts, 19, 22))
>ListIterator : Symbol(ListIterator, Decl(underscoreMapFirst.ts, 5, 5))
>T : Symbol(T, Decl(underscoreMapFirst.ts, 18, 24))
>TResult : Symbol(TResult, Decl(underscoreMapFirst.ts, 18, 26))

        context?: any): TResult[];
>context : Symbol(context, Decl(underscoreMapFirst.ts, 20, 43))
>TResult : Symbol(TResult, Decl(underscoreMapFirst.ts, 18, 26))

    export function first<T>(array: List<T>): T;
>first : Symbol(first, Decl(underscoreMapFirst.ts, 21, 34))
>T : Symbol(T, Decl(underscoreMapFirst.ts, 23, 26))
>array : Symbol(array, Decl(underscoreMapFirst.ts, 23, 29))
>List : Symbol(List, Decl(underscoreMapFirst.ts, 1, 31))
>T : Symbol(T, Decl(underscoreMapFirst.ts, 23, 26))
>T : Symbol(T, Decl(underscoreMapFirst.ts, 23, 26))
}

declare class View {
>View : Symbol(View, Decl(underscoreMapFirst.ts, 24, 1))

    model: any;
>model : Symbol(model, Decl(underscoreMapFirst.ts, 26, 20))
}

interface IData {
>IData : Symbol(IData, Decl(underscoreMapFirst.ts, 28, 1))

    series: ISeries[];
>series : Symbol(series, Decl(underscoreMapFirst.ts, 30, 17))
>ISeries : Symbol(ISeries, Decl(underscoreMapFirst.ts, 32, 1))
}

interface ISeries {
>ISeries : Symbol(ISeries, Decl(underscoreMapFirst.ts, 32, 1))

    items: any[];
>items : Symbol(items, Decl(underscoreMapFirst.ts, 34, 19))

    key: string;
>key : Symbol(key, Decl(underscoreMapFirst.ts, 35, 17))
}

class MyView extends View {
>MyView : Symbol(MyView, Decl(underscoreMapFirst.ts, 37, 1))
>View : Symbol(View, Decl(underscoreMapFirst.ts, 24, 1))

    public getDataSeries(): ISeries[] {
>getDataSeries : Symbol(getDataSeries, Decl(underscoreMapFirst.ts, 39, 27))
>ISeries : Symbol(ISeries, Decl(underscoreMapFirst.ts, 32, 1))

        var data: IData[] = this.model.get("data");
>data : Symbol(data, Decl(underscoreMapFirst.ts, 41, 11))
>IData : Symbol(IData, Decl(underscoreMapFirst.ts, 28, 1))
>this.model : Symbol(View.model, Decl(underscoreMapFirst.ts, 26, 20))
>this : Symbol(MyView, Decl(underscoreMapFirst.ts, 37, 1))
>model : Symbol(View.model, Decl(underscoreMapFirst.ts, 26, 20))

        var allSeries: ISeries[][] = _.pluck(data, "series");
>allSeries : Symbol(allSeries, Decl(underscoreMapFirst.ts, 42, 11))
>ISeries : Symbol(ISeries, Decl(underscoreMapFirst.ts, 32, 1))
>_.pluck : Symbol(_.pluck, Decl(underscoreMapFirst.ts, 13, 5))
>_ : Symbol(_, Decl(underscoreMapFirst.ts, 0, 0))
>pluck : Symbol(_.pluck, Decl(underscoreMapFirst.ts, 13, 5))
>data : Symbol(data, Decl(underscoreMapFirst.ts, 41, 11))

        return _.map(allSeries, _.first);
>_.map : Symbol(_.map, Decl(underscoreMapFirst.ts, 16, 37))
>_ : Symbol(_, Decl(underscoreMapFirst.ts, 0, 0))
>map : Symbol(_.map, Decl(underscoreMapFirst.ts, 16, 37))
>allSeries : Symbol(allSeries, Decl(underscoreMapFirst.ts, 42, 11))
>_.first : Symbol(_.first, Decl(underscoreMapFirst.ts, 21, 34))
>_ : Symbol(_, Decl(underscoreMapFirst.ts, 0, 0))
>first : Symbol(_.first, Decl(underscoreMapFirst.ts, 21, 34))
    }
}