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