export declare const isRegExp: (value: any) => boolean;
export declare const isNumber: (value: any) => boolean;
export declare const isString: (value: any) => boolean;
export declare const isBoolean: (value: any) => boolean;
export declare const isNull: (value: any) => boolean;
export declare const isUndefined: (value: any) => boolean;
export declare const isSymbol: (value: any) => boolean;
export declare const isFunction: (value: any) => boolean;
export declare const isObject: (value: any) => boolean;
export declare const isArray: (value: any) => boolean;
export declare const isProcess: (value: any) => boolean;
export declare const isWindow: (value: any) => boolean;
export declare const isFalse: (val: any) => boolean;
export declare const isBrowserEnv: boolean;
export declare function isValidKey(key: string | number | symbol, object: object): key is keyof typeof object;
//# sourceMappingURL=is.d.ts.map