export declare function RGBComponent(val: number): number;
export declare function alphaComponent(val: number): number;
export declare function getNumberValidator<T>(): ((val: T, attr: string) => T) | undefined;
export declare function getNumberOrArrayOfNumbersValidator<T>(noOfElements: number): ((val: T, attr: string) => T) | undefined;
export declare function getNumberOrAutoValidator<T>(): ((val: T, attr: string) => T) | undefined;
export declare function getStringValidator<T>(): ((val: T, attr: string) => T) | undefined;
export declare function getStringOrGradientValidator<T>(): ((val: T, attr: string) => T) | undefined;
export declare function getFunctionValidator<T>(): ((val: T, attr: string) => T) | undefined;
export declare function getNumberArrayValidator<T>(): ((val: T, attr: string) => T) | undefined;
export declare function getBooleanValidator<T>(): ((val: T, attr: string) => T) | undefined;
export declare function getComponentValidator<T>(components: string[]): ((val: T, attr: string) => T) | undefined;