export declare const isOneOf: (target: string, array: string | string[]) => boolean;
export declare const camelCaseToDash: (str: string) => string;
export declare const convertHexToRGBA: (color: string, opacity?: number) => string;
export declare const getPrefixCls: (suffixCls: string, contextPrefix?: string | undefined, customisedCls?: string | undefined) => string;
