export interface CallbackFunc<T> {
    (e: Error, r: T): any;
}
export declare type NodeAsyncCall<T> = {
    (callback: CallbackFunc<T>): any;
} | {
    (arg1: any, callback: CallbackFunc<T>): any;
} | {
    (arg1: any, arg2: any, callback: CallbackFunc<T>): any;
} | {
    (arg1: any, arg2: any, arg3: any, callback: CallbackFunc<T>): any;
} | {
    (arg1: any, arg2: any, arg3: any, arg4: any, callback: CallbackFunc<T>): any;
} | {
    (arg1: any, arg2: any, arg3: any, arg4: any, arg5: any, callback: CallbackFunc<T>): any;
} | {
    (arg1: any, arg2: any, arg3: any, arg4: any, arg5: any, arg6: any, callback: CallbackFunc<T>): any;
} | {
    (arg1: any, arg2: any, arg3: any, arg4: any, arg5: any, arg6: any, arg7: any, callback: CallbackFunc<T>): any;
} | {
    (arg1: any, arg2: any, arg3: any, arg4: any, arg5: any, arg6: any, arg7: any, arg8: any, callback: CallbackFunc<T>): any;
} | {
    (arg1: any, arg2: any, arg3: any, arg4: any, arg5: any, arg6: any, arg7: any, arg8: any, arg9: any, callback: CallbackFunc<T>): any;
};
export declare function callbackToPromise<T>(func: NodeAsyncCall<T>, ...args: any[]): Promise<T>;
export declare function whenAll<T, U>(tasks: U[], mapper: (x: U) => Promise<T>, parallelism?: number): Promise<T[]>;