interface TemporalInstance {
    toInstant?: () => unknown;
    toPlainDate?: (arg?: unknown) => unknown;
    toPlainDateTime?: (arg?: unknown) => unknown;
    toPlainTime?: () => unknown;
    toPlainYearMonth?: () => unknown;
    toPlainMonthDay?: () => unknown;
    toZonedDateTime?: (arg: unknown) => unknown;
    toZonedDateTimeISO?: (arg: unknown) => unknown;
    withCalendar?: (cal: unknown) => unknown;
    withPlainTime?: (t: unknown) => unknown;
    withTimeZone?: (z: unknown) => unknown;
    getTimeZoneTransition?: (opts: unknown) => unknown;
    startOfDay?: () => unknown;
    sign?: () => number;
    blank?: () => boolean;
    total?: (opts: unknown) => number;
    abs?: () => unknown;
    negated?: () => unknown;
    toString?: () => string;
    year?: number;
    month?: number;
    day?: number;
    hour?: number;
    minute?: number;
    second?: number;
    calendarId?: string;
    timeZoneId?: string;
    monthCode?: string;
}
export declare const isPlainDate: (value: unknown) => value is TemporalInstance;
export declare const isPlainTime: (value: unknown) => value is TemporalInstance;
export declare const isPlainDateTime: (value: unknown) => value is TemporalInstance;
export declare const isZonedDateTime: (value: unknown) => value is TemporalInstance;
export declare const isInstant: (value: unknown) => value is TemporalInstance;
export declare const isPlainYearMonth: (value: unknown) => value is TemporalInstance;
export declare const isPlainMonthDay: (value: unknown) => value is TemporalInstance;
export declare const isDuration: (value: unknown) => value is Record<string, unknown>;
export declare const isTemporal: (value: unknown) => value is TemporalInstance;
export declare function assertTemporal(value: unknown): asserts value is TemporalInstance;
export declare function assertInstant(value: unknown): asserts value is TemporalInstance;
export declare function assertPlainDate(value: unknown): asserts value is TemporalInstance;
export declare function assertPlainTime(value: unknown): asserts value is TemporalInstance;
export declare function assertPlainDateTime(value: unknown): asserts value is TemporalInstance;
export declare function assertZonedDateTime(value: unknown): asserts value is TemporalInstance;
export declare function assertPlainYearMonth(value: unknown): asserts value is TemporalInstance;
export declare function assertPlainMonthDay(value: unknown): asserts value is TemporalInstance;
export declare function assertDuration(value: unknown): asserts value is Record<string, unknown>;
export {};