export interface PollerStats {
    readonly attempts: number;
    readonly lastIntervalMs: number;
    readonly totalElapsedMs: number;
}
interface PollWithStats {
    readonly stats: PollerStats;
}
export interface PurPollWaitingActionResult {
    readonly state: "waiting";
}
export type PollWaitingActionResult = PurPollWaitingActionResult & PollWithStats;
export interface PurPollSuccessActionResult<T> {
    readonly state: "success";
    readonly result: T;
}
export type PollSuccessActionResult<T> = PurPollSuccessActionResult<T> & PollWithStats;
export interface PurPollErrorActionResult {
    readonly state: "error";
    readonly error: Error;
}
export type PollErrorActionResult = PurPollErrorActionResult & PollWithStats;
export interface PurPollTimeoutActionResult {
    readonly state: "timeout";
}
export type PollTimeoutActionResult = PurPollTimeoutActionResult & PollWithStats;
export interface PurPollAbortActionResult {
    readonly state: "aborted";
    readonly reason: unknown;
}
export type PollAbortActionResult = PurPollAbortActionResult & PollWithStats;
export type PollActionResult<T> = PurPollWaitingActionResult | PurPollSuccessActionResult<T> | PurPollErrorActionResult | PurPollTimeoutActionResult | PurPollAbortActionResult;
export declare const FOREVER = 2147483647;
export interface PollerOptions<CTX> {
    readonly intervalMs: number;
    readonly actionTimeoutMs: number;
    readonly timeoutMs: number;
    readonly exponentialBackoff: boolean;
    readonly abortSignal?: AbortSignal;
    readonly ctx: CTX;
}
export type PollerResult<T> = PollSuccessActionResult<T> | PollErrorActionResult | PollTimeoutActionResult | PollAbortActionResult;
export interface PollerCtx<CTX> {
    readonly ctx: CTX;
    readonly stats: PollerStats;
    readonly abortSignal: AbortSignal;
}
export type PollerFunc<T, CTX> = (state: PollerCtx<CTX>) => Promise<PollActionResult<T>>;
export declare function poller<R, CTX = void>(fn: PollerFunc<R, CTX>, ioptions?: Partial<PollerOptions<CTX>>): Promise<PollerResult<R>>;
export {};
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