import { Range } from "../Types.js";
import { ParsingContext } from "../ParsingContext.js";
import type { Options } from "@markwhen/rrule";
export type DurationUnit = "years" | "months" | "weeks" | "weekdays" | "days" | "hours" | "minutes" | "seconds" | "milliseconds";
export type Duration = Partial<Record<DurationUnit, number>>;
export interface RecurrenceInText {
    recurrence: Recurrence;
    range: Range;
}
export type Recurrence = Omit<Partial<Options>, "until" | "dtstart"> & {
    until?: string;
    dtstart?: string;
};
export declare const recurrenceDurationUnits: DurationUnit[];
export declare function toJsDates(recurrence: Recurrence): Partial<Options>;
export declare const checkEdtfRecurrence: (line: string, i: number, lengthAtIndex: number[], eventStartLineRegexMatch: RegExpMatchArray, context: ParsingContext) => RecurrenceInText | undefined;
export declare const checkRecurrence: (line: string, i: number, lengthAtIndex: number[], eventStartLineRegexMatch: RegExpMatchArray, context: ParsingContext) => RecurrenceInText | undefined;