import type { DayBoundary, EarthlyBranch, Gender, HeavenlyStem, Pillar } from './types';
export declare function assertIntegerInRange(value: unknown, min: number, max: number, name: string): asserts value is number;
export declare function assertFiniteNumber(value: unknown, name: string): asserts value is number;
export declare function assertBoolean(value: unknown, name: string): asserts value is boolean;
export declare function assertOptionalBoolean(value: unknown, name: string): void;
export declare function assertHeavenlyStem(value: unknown, name?: string): asserts value is HeavenlyStem;
export declare function assertEarthlyBranch(value: unknown, name?: string): asserts value is EarthlyBranch;
export declare function assertPillar(value: unknown, name?: string): asserts value is Pillar;
export declare function assertGender(value: unknown, name?: string): asserts value is Gender;
export declare function assertDayBoundary(value: unknown, name?: string): asserts value is DayBoundary;