/**
 * Detects a date sequence with a constant calendar step (day, week, month or
 * year) and extrapolates it, preserving the source representation (native `Date`
 * vs ISO `YYYY-MM-DD` string).
 *
 * Step classification is prioritized **year → month → day** (a week is a 7-day
 * step). Monthly/yearly detection requires a stable day-of-month; irregular
 * month-end runs (`Jan 31, Feb 28, Mar 31`) are left to the copy fallback in v1.
 * A single date copies rather than guessing a cadence.
 *
 * @packageDocumentation
 */
import type { AutoFillPatternDetector, AutoFillSeries } from './pattern-detector';
import { AutoFillDetectorName } from './pattern-detector';
import type { AutoFillValue, DetectContext } from '../types/autofill.types';
export declare class DateSequenceDetector implements AutoFillPatternDetector {
    readonly name = AutoFillDetectorName.Date;
    detect(source: readonly AutoFillValue[], _ctx: DetectContext): AutoFillSeries | null;
}
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