/**
 * Supported time units for time string formatting.
 *
 * @public
 */
export type TimeUnit = "ms" | "s" | "m" | "h" | "d";
/**
 * A valid time string in the format: number followed by time unit.
 * Examples: "10m", "1h", "7d", "30s", "500ms"
 *
 * @public
 */
export type ValidTimeString = `${number}${TimeUnit}`;
/**
 * Generates an expired date based on the given time string.
 * Calculates a future date by adding the specified time duration to the current time.
 *
 * @param timeString - A string in the format `${number}${TimeUnit}` (e.g., "10m", "7d", "60s", "1000ms")
 * @returns A Date object representing the expiration time
 * @throws {Error} If the time string format is invalid or uses unsupported time units
 *
 * @example
 * ```typescript
 * // Get a date 10 minutes from now
 * const expiry = generateExpiredDate("10m");
 *
 * // Get a date 7 days from now
 * const weekFromNow = generateExpiredDate("7d");
 *
 * // Get a date 30 seconds from now
 * const soon = generateExpiredDate("30s");
 * ```
 *
 * @public
 */
export declare function generateExpiredDate(timeString: ValidTimeString): Date;
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