20220307ReadDir
完成一个页面，包括前端和后端：
假定环境变量中有一个目录DATA_DIR=/some/path
展示DATA_DIR下的一级目录和文件及大小
每10秒刷新一次
要求：
0.充分理解需求，完成符合描述，有限且完备的功能
1.工业级实现，工业级实现，工业级实现
2.良好的工程习惯，良好的工程习惯，良好的工程习惯
3.后端：语言不限
4.前端：方式不限，如有相关经验，请使用React/Vue/Angular等框架
项目目录简介：
routes/index.js 主接口文件，文件监听，文件目录内容读取与更新到缓存文件
utils/readFile.js 工具类文件，递归读取文件夹及文件大小
views/ 主要页面
.env 环境变量管理
serverOpts/* https秘钥对
bin/http2.js http2 spy版本的 服务器
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
An Open Source Machine Learning Framework for Everyone
Django
The Web framework for perfectionists with deadlines.
Laravel
A PHP framework for web artisans
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
Some thing interesting about web. New door for the world.
A server is a program made to process requests and deliver data to clients.
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
Some thing interesting about visualization, use data art
Some thing interesting about game, make everyone happy.
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
Microsoft
Open source projects and samples from Microsoft.
Google
Google ❤️ Open Source for everyone.
Alibaba
Alibaba Open Source for everyone
D3
Data-Driven Documents codes.
Tencent
China tencent open source team.
