文档：Directory structure

1.项目结构

umi项目的初始结构是这样的

.
├── package.json
├── .umirc.ts
├── .env
├── dist
├── mock
├── public
└── src
    ├── .umi
    ├── layouts/index.tsx
    ├── pages
        ├── index.less
        └── index.tsx
    └── app.ts

1.1 package.json

1.1.1 依赖

这些是所有的依赖

"dependencies": {
    "@ant-design/pro-layout": "^6.5.0",
    "react": "17.x",
    "react-dom": "17.x",
    "umi": "^3.5.20"
  },
  "devDependencies": {
    "@types/react": "^17.0.0",
    "@types/react-dom": "^17.0.0",
    "@umijs/preset-react": "1.x",
    "@umijs/test": "^3.5.20",
    "lint-staged": "^10.0.7",
    "