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- import type { NormalizedInterval } from "./types.js";
- /**
- * The {@link interval} function options.
- */
- export interface IntervalOptions {
- /** Asserts that the interval is positive (start is after the end). */
- assertPositive?: boolean;
- }
- /**
- * @name interval
- * @category Interval Helpers
- * @summary Creates an interval object and validates its values.
- *
- * @description
- * Creates a normalized interval object and validates its values. If the interval is invalid, an exception is thrown.
- *
- * @typeParam DateType - The `Date` type, the function operates on. Gets inferred from passed arguments. Allows to use extensions like [`UTCDate`](https://github.com/date-fns/utc).
- *
- * @param start - The start of the interval.
- * @param end - The end of the interval.
- * @param options - The options object.
- *
- * @throws `Start date is invalid` when `start` is invalid.
- * @throws `End date is invalid` when `end` is invalid.
- * @throws `End date must be after start date` when end is before `start` and `options.assertPositive` is true.
- *
- * @returns The normalized and validated interval object.
- */
- export declare function interval<DateType extends Date>(
- start: DateType | number | string,
- end: DateType | number | string,
- options?: IntervalOptions,
- ): NormalizedInterval<DateType>;
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