1. Babel JS：Convert new version js to lower version js.
2. ESLint: Js 语法检查。
3. PWA Vue: A Progressive Web Application (PWA) is a web application that offers an app-like user experience on the web. Modern web technological innovations such as service workers, Native APIs have contributed greatly to progressive web apps and help improve the quality of web applications.
4. Jest: Jest is a JavaScript testing framework by Facebook that we will be using to set environment for our tests and run them. It supports snapshot testing, code coverage and easy mocking, in other words everything to make a developer’s life simpler. Vue Test Utils is the official unit testing library for Vue.js framework.
5. Mocha: is a JavaScript test framework running on node.js, featuring browser support, asynchronous testing, test coverage reports, and use of any assertion library.
cli-plugin-e2e-cypress: Fast, easy and reliable testing for anything that runs in a browser.
6. Grunt: The JavaScript Task Runner(https://gruntjs.com/)
7. Webpack：(stylised webpack) is an open-source JavaScript module bundler. It is a module bundler primarily for JavaScript, but it can transform front-end assets like HTML, CSS, and images if the corresponding plugins are included. Webpack takes modules with dependencies and generates static assets representing those modules.
8. Gulp is a task runner that uses Node.js as a platform. Gulp purely uses the JavaScript code and helps to run front-end tasks and large-scale web applications. It builds system automated tasks like CSS and HTML minification, concatenating library files, and compiling the SASS files.
