export declare const reactVersion: string;
export declare const reactVersionMajor: number | null;
export declare const isReactVersionAtLeast19: boolean;
export declare const isReactVersionAtLeast18: boolean;
export declare const isReactVersionAtLeast17: boolean;
export declare const isReactVersionAtLeast16: boolean;
export declare function getMajorReactVersion(): number | null;
export declare function isReactVersionAtLeast(version: number): boolean;