import ' rollup-plugin-inject-process-env';
import { Dayjs } from "dayjs";
/**
 * The days an FSM/CRM has declared full.
 *
 * They reach the widget as one comma delimited string on a channel action response -
 * never on the initial render - and each entry is either a "YYYY-MM-DD" date, a weekday
 * name as `dddd` formats it ("Saturday"), or either of those with `*` standing in for any
 * run of characters ("2026-08-*").
 */
/**
 * Split what the channel sent into the entries to match against.
 *
 * Reports `undefined` rather than an empty array when nothing has arrived, so a caller
 * can tell "no availability information yet" from "nothing is busy".
 *
 * @param busyDays The comma delimited list, as the channel sends it.
 */
export declare function parseBusyDays(busyDays?: string): string[] | undefined;
/**
 * Whether the CRM has declared the given day full.
 *
 * An absent or empty list means nothing is busy, so a picker shows its own availability
 * rather than greying everything or nothing out while the response is still in flight.
 *
 * @param day The day being drawn.
 * @param busyDays The entries from {@link parseBusyDays}.
 */
export declare function isBusyDay(day: Dayjs, busyDays?: readonly string[]): boolean;