export declare function guid(): string;
export declare function uuid16(): string;
export declare function getDate(time: number): {
    time: number;
    year: number;
    month: string | number;
    day: string | number;
    hour: string | number;
    minute: string | number;
    second: string | number;
    millisecond: string | number;
};
/**
 * Determine whether a value is of a specific type.
 */
export declare function isNumber(value: any): boolean;
export declare function isBigInt(value: any): boolean;
export declare function isString(value: any): boolean;
export declare function isArray(value: any): boolean;
export declare function isBoolean(value: any): boolean;
export declare function isUndefined(value: any): boolean;
export declare function isNull(value: any): boolean;
export declare function isSymbol(value: any): boolean;
export declare function isObject(value: any): boolean;
export declare function isFunction(value: any): boolean;
export declare function isElement(value: any): any;
export declare function isWindow(value: any): boolean;
export declare function isIterable(value: any): boolean;
/**
 * Get the prototype name of an object
 */
export declare function getPrototypeName(value: any): string;
/**
 * Get an object's constructor name.
 */
export declare function getObjName(obj: any): string;
/**
 * check whether an object is plain (using {})
 * @param object obj
 * @return boolean
 */
export declare function isPlainObject(obj: any): boolean;
/**
 * Escape HTML to XSS-safe text.
 */
export declare function htmlEncode(text: string | number): string;
/**
 * Convert a text's invisible characters to visible characters.
 */
export declare function getVisibleText(text: string): string;
/**
 * A safe `JSON.stringify` method.
 */
export declare function safeJSONStringify(obj: any, opt?: {
    maxDepth?: number;
    keyMaxLen?: number;
    pretty?: boolean;
    standardJSON?: boolean;
}): string;
/**
 * Call original `JSON.stringify` and catch unknown exceptions.
 */
export declare function JSONStringify(value: any, replacer?: (this: any, key: string, value: any) => any, space?: string | number): string;
/**
 * Get the bytes of a string.
 * @example 'a' = 1
 * @example '好' = 3
 */
export declare function getStringBytes(str: string): number;
/**
 * Convert bytes number to 'MB' or 'KB' string.
 */
export declare function getBytesText(bytes: number): string;
/**
 * Get a string within a limited max length.
 * The byte size of the string will be appended to the string when reached the limit.
 * @return 'some string...(3.1 MB)'
 */
export declare function getStringWithinLength(str: string, maxLen: number): string;
/**
 * Sore an `string[]` by string.
 */
export declare function sortArray(arr: string[]): string[];
/**
 * Get enumerable keys of an object or array.
 */
export declare function getEnumerableKeys(obj: any): string[];
/**
 * Get enumerable and non-enumerable keys of an object or array.
 */
export declare function getEnumerableAndNonEnumerableKeys(obj: any): string[];
/**
 * Get non-enumerable keys of an object or array.
 */
export declare function getNonEnumerableKeys(obj: any): string[];
export declare function getSymbolKeys(obj: any): symbol[];
/**
 * localStorage methods
 */
export declare function setStorage(key: string, value: string): void;
export declare function getStorage(key: string): string | null | undefined;
/**
 * Generate a 6-digit unique string with prefix `"__vc_" + ${prefix}`
 */
export declare function getUniqueID(prefix?: string): string;
export declare function divideArrayByLength(array?: Array<any>, length?: number): any[][];
export declare function normalizeBigResponseData(responseData: Array<any> | string | Record<string, any>): Array<any> | string | Record<string, any>;
export declare const getErrorInfo: (e: Error | object) => {
    message: string;
    detail: string;
    name: string;
    stack: string[];
};
export declare const nextTick: (callback?: Function) => Promise<unknown>;
export declare const getUrl: () => string;