export declare function isString(p: any): p is string;
export declare function isNumber(p: any): p is number;
export declare function isBoolean(p: any): p is boolean;
export declare function isUndefined(p: any): p is undefined;
export declare function isNull(p: any): p is null;
export declare function isArray(p: any): p is [];
export declare const toNumber: (number: number | string, toFixedNumber?: number) => number;
export declare const toString: (str: any) => any;