/**
 * Options shared by the interval occurrence helpers. `maxOccurrences` bounds the
 * number of due occurrences {@link collectDueIntervalOccurrences} returns in a
 * single call so a long backfill window cannot generate an unbounded list.
 */
export type IntervalOccurrenceOptions = {
    maxOccurrences?: number;
};
/**
 * Compute the first interval occurrence strictly after `afterTimestamp`.
 *
 * Occurrences are anchored at `anchorTimestamp` and spaced exactly
 * `intervalMilliseconds` apart: `anchor + n * interval` for `n >= 1`. The result
 * is the smallest such timestamp greater than `afterTimestamp`, so repeatedly
 * feeding the previous result back in walks forward one interval at a time.
 *
 * For example, a 1-hour interval anchored at epoch (`0`), asked for the next
 * occurrence after 90 minutes (`5_400_000`), returns the 2-hour mark
 * (`7_200_000`).
 */
export declare function getNextIntervalOccurrence(anchorTimestamp: number, intervalMilliseconds: number, afterTimestamp: number): number;
/**
 * Collect every interval occurrence in the inclusive window
 * `[firstDueAt, throughTimestamp]`, anchored at `anchorTimestamp`. Mirrors the
 * cron occurrence collector so the schedule timer can drive backfill through a
 * single code path regardless of spec kind.
 *
 * For example, a 1-hour interval first due at the 1-hour mark, collected through
 * the 3-hour mark, yields the 1-hour, 2-hour, and 3-hour timestamps.
 */
export declare function collectDueIntervalOccurrences(anchorTimestamp: number, intervalMilliseconds: number, firstDueAt: number, throughTimestamp: number, options?: IntervalOccurrenceOptions): number[];