/**
 * @ignore
 */
export declare type IValidtorRule<T> = {
    [K in keyof T]: (newValue: unknown, oldValue: unknown) => boolean;
};
/**
 * @ignore
 */
export declare type IValidtor<T, K extends keyof T> = (key: K, newValue: unknown, oldValue: unknown) => newValue is T[K];
/**
 * @ignore
 */
export declare function createValidator<T, K extends keyof T = keyof T>(validators: IValidtorRule<T>): IValidtor<T, K>;
/**
 * @ignore
 */
export declare function isNumber(value: unknown): value is number;
/**
 * @ignore
 */
export declare function isString(value: unknown): value is string;
/**
 * @ignore
 */
export declare function isBoolean(value: unknown): value is boolean;
/**
 * @ignore
 */
export declare function isCanvasGradient(value: unknown): value is CanvasGradient;
/**
 * @ignore
 */
export declare function isCanvasPattern(value: unknown): value is CanvasPattern;
/**
 * @ignore
 */
export declare function isCanvasTextAlign(value: unknown): value is CanvasTextAlign;
/**
 * @ignore
 */
export declare function isArray<T = any>(value: unknown, typeCheck?: (value: unknown) => boolean): value is T[];