export interface IArrayReduceReducerFunction<GValue, GReduced> {
    (previousValue: GReduced, currentValue: GValue, index: number): GReduced;
}
export interface IArrayReduceFunction<GValue> {
    (reducer: IArrayReduceReducerFunction<GValue, GValue>): GValue;
    <GReduced>(reducer: IArrayReduceReducerFunction<GValue, GReduced>, initialValue: GReduced): GReduced;
}