import { z } from "zod";
export type DurationUnit = "ms" | "s" | "m" | "h";
/**
 * Parses a duration shorthand string ("500ms" | "30s" | "5m" | "2h") or a raw
 * millisecond number into a millisecond count. Returns `null` for anything
 * unparseable, negative, or non-finite.
 */
export declare function parseDuration(value: string | number): number | null;
/**
 * Zod schema that accepts a duration shorthand string or a raw millisecond
 * number and resolves to the parsed millisecond value.
 */
export declare const durationSchema: z.ZodPipe<z.ZodUnion<readonly [z.ZodString, z.ZodNumber]>, z.ZodTransform<number, string | number>>;
export type Duration = z.input<typeof durationSchema>;
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