import { IScheduler } from "./scheduler";
export declare type TaskFn<ResultT> = (...args: any[]) => Promise<ResultT>;
export interface ITaskDef<ResultT> {
    getTaskName(): string;
    getTaskFn(): TaskFn<ResultT>;
    create(...inputs: any[]): ITask<ResultT>;
}
export interface ITask<ResultT> {
    getTaskId(): string;
    getTaskDef(): ITaskDef<ResultT>;
    run(scheduler: IScheduler): Promise<ResultT>;
}
export declare class Task<ResultT> implements ITask<ResultT> {
    static register<ResultT>(taskName: string, taskFn: TaskFn<ResultT>): ITaskDef<ResultT>;
    static lookup<ResultT>(taskDefId: string): ITaskDef<ResultT>;
    static all<ResultT>(inputTasks: ITask<ResultT>[]): ITask<ResultT[]>;
    private static taskDefs;
    private taskId;
    private inputTasks;
    private taskDef;
    constructor(inputTasks: ITask<any>[], taskDef: ITaskDef<ResultT>);
    getTaskId(): string;
    getTaskDef(): ITaskDef<ResultT>;
    run(scheduler: IScheduler): Promise<ResultT>;
}