import { z } from 'zod';
/**
 * A branded YYYY-MM-DD date string that must be converted to a JS Date via
 * {@link plainDateToLocalDate} rather than `new Date()`.
 *
 * `new Date("2021-01-01")` treats the string as UTC midnight, which shifts the
 * displayed day in timezones behind UTC. Use `plainDateToLocalDate` instead to
 * get local midnight.
 */
export declare const PlainDate: z.core.$ZodBranded<z.ZodString, "PlainDate", "out">;
export type PlainDate = z.infer<typeof PlainDate>;
/**
 * Converts a {@link PlainDate} (YYYY-MM-DD) to a local `Date` at midnight.
 *
 * The `Date(year, month, day)` constructor uses the local timezone, unlike
 * `new Date(dateString)` which interprets bare date strings as UTC midnight.
 */
export declare function plainDateToLocalDate(date: PlainDate): Date;
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