import type { WorkflowProgressData, WorkflowTraceEvent, WorkflowUpdateRecord } from "./types.js";
export type ProgressConfidence = "low" | "medium" | "high";
export type ProgressEstimate = {
    key: string;
    data: WorkflowProgressData;
    sampleCount: number;
    delta?: number;
    rateLow?: number;
    rateMedian?: number;
    rateHigh?: number;
    remainingLowMs?: number;
    remainingMedianMs?: number;
    remainingHighMs?: number;
    confidence?: ProgressConfidence;
    sourceEstimatedFinishAt?: string;
    unavailableReason?: string;
    elapsedMs?: number;
};
export type ProgressSample = {
    at: string;
    data: WorkflowProgressData;
};
export type ProgressTrackState = {
    key: string;
    samples: ProgressSample[];
    estimate: ProgressEstimate;
};
export declare function estimateProgress(key: string, samples: ProgressSample[], now?: Date): ProgressEstimate;
export declare function progressRecordsFromTrace(events: WorkflowTraceEvent[]): WorkflowUpdateRecord[];
export declare function appendProgressHistory(history: WorkflowUpdateRecord[], additions: WorkflowUpdateRecord[], maxPerTrack?: number, maxRecords?: number): WorkflowUpdateRecord[];
export declare function progressTracksFromRecords(records: WorkflowUpdateRecord[], now?: Date): ProgressTrackState[];
export declare function formatProgressLine(estimate: ProgressEstimate, now?: Date): string;
export declare function formatProgressReport(estimates: ProgressEstimate[], nextCheckMinutes?: number, now?: Date, maxChars?: number): string;
export declare function formatRemaining(ms: number): string;
export declare function prioritizeProgressEstimates(estimates: ProgressEstimate[]): ProgressEstimate[];