export declare const isBoolean: (data: any) => data is boolean;
export declare const isNumber: (data: any) => data is number;
export declare const isBigInt: (data: any) => data is BigInt;
export declare const isDate: (data: unknown) => data is Date;
export declare const isString: (data: any) => data is string;
export declare const isArray: (data: any) => data is any[];
export declare const isObject: (data: any) => data is object;
export declare const isNull: (data: any) => data is null;
export declare const isUndefined: (data: any) => data is undefined;
export declare const isFunction: (data: unknown) => data is Function;