import type { calendar_v3 } from '@googleapis/calendar';
import type { Optional } from '../../lib/optionality.js';
import type { EventDateTime } from '../entities/EventDateTime.js';
/**
 * Build the REST `EventDateTime` for a tool's time input. Timed events carry
 * the ISO timestamp as `dateTime` (plus the optional IANA `timeZone`); all-day
 * events carry only the calendar date, so the tool's midnight-UTC timestamp
 * collapses to its `yyyy-mm-dd` prefix.
 */
export declare function buildEventDateTime(args: {
    /** An ISO 8601 timestamp, for example 2026-06-10T09:00:00-05:00. */
    dateTime: string;
    /** An IANA Time Zone Database name, for example America/Chicago. */
    timeZone?: Optional<string>;
    /** When true, build the all-day `date` form instead of `dateTime`. */
    allDay?: Optional<boolean>;
}): calendar_v3.Schema$EventDateTime;
/** Project a REST EventDateTime onto the entity shape, dropping nulls. */
export declare function projectEventDateTime(dateTime: calendar_v3.Schema$EventDateTime): EventDateTime;
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