
## main packages 

- [moment](http://momentjs.com/)

Parse,validate,manipulate,and display dates and times in JavaScript.

- [lodash](https://lodash.com/)

A modern JavaScript utility library delivering modularity, performance & extras.

- [less](http://lesscss.org/)

Less (which stands for Leaner Style Sheets) is a backwards-compatible language extension for CSS.

- [babel-polyfill](https://babeljs.io/docs/usage/polyfill/)

This will emulate a full ES2015+ environment and is intended to be used in an application rather than a library/tool.

- [element-ui](http://element.eleme.io/#/en-US/component/installation)

A desktop UI library.

- [fontawesome](https://fontawesome.com/?from=io)

Awesome Font.

- [axios](https://www.npmjs.com/package/axios)

Promise based HTTP client for the browser and nodeJs.[how to use it](https://www.cnblogs.com/ldlx-mars/p/7908950.html)

- [d3](https://d3js.org/)

D3.js is a JavaScript library for manipulating documents based on data

