import type { TargetValueAssertion, ValueAssertion } from './validators';
/** Returns false for null, undefined, NaN, infinity numbers, empty objects, empty arrays, empty strings. */
export declare function required(): ValueAssertion;
export declare function min(minValue: number): ValueAssertion<unknown>;
export declare function max(maxValue: number): ValueAssertion<unknown>;
export declare function minLength(minValue: number): ValueAssertion<unknown>;
export declare function maxLength(maxValue: number): ValueAssertion<unknown>;
export declare function match(regExp: RegExp): ValueAssertion<unknown>;
export declare function equals<T extends AnyObject>(otherProp: keyof T): TargetValueAssertion<T>;
export declare function oneOf(...list: unknown[]): ValueAssertion<unknown>;
export declare function email(): ValueAssertion<unknown>;
/** Validates string via Date.parse */
export declare function dateString(): ValueAssertion<unknown>;