node-jarvis

some useful functions for nodejs development and some database connect functions

``
/**
* asynchronous function returns in designative time
* @param ms millsecond
*/
export function sleep(ms?: number): Promise;
/**
* use JSON module to simply clone an object, low performance
* @param obj source object to clone
*/
export function jsonClone(obj: T): T;
/**
* clone an object by recursion, to avoid same reference for same memory address
* @param obj
*/
export function deepClone(obj: T): T;
/**
* generate a random number from min to max
* @param min minimum bundary
* @param max maximum bundary
*/
export function random(min: number, max: number): number;
/**
* unique an array data by using Set
* @param arr origin data
*/
export function unique(arr: Array): Array;
/**
* parse millsecond number to time span string
* @param mills
* @returns time span
*/
export function parseTimespan(mills: number): string;
/**
* print a process in a loop, with time options
* @param current current number for loop
* @param total total number for loop
* @param options options for function
*/
export function printPercent(current: number, total: number, options?: PercentBar): void;
/**
* if call this function, Date prototype will load a format function, eg: new Date().format("YYYY-MM-DD")
*/
export function enableOriginFormat(): void;
/**
data form:
* [
* ['head0', 'head1', 'head2', 'head3'],
* ['row00', 'row01', 'row02', 'row03'],
* ['row10', 'row11', 'row12', 'row13'],
* ['row20', 'row21', 'row22', 'row23']
* ]
* @param path output filepath, include file name
* @param data sheet data
*/
export function outputExcel(path: string, data: Array>): void;
/**
* read one xlsx file, returns Array
* @param path input filepath, include file name
*/
export function readExcel(path: string): Array;
``