关于react项目搭建，网上已经有了许多的基础教程，以及环境安装的说明，这里就省略了。

主要安装好的环境有：

1、npm-v6.1.0

2、nodejs-v10.7.0

下面就创建一个react项目，过程其实很简单，几个步骤：

1、安装create-react-app

cmd进行命令行，输入：

npm install -g create-react-app

然后再输入命令创建react项目：

create-react-app react-demo

Creating a new React app in D:\react\react-demo.

Installing packages. This might take a couple of minutes.
Installing react, react-dom, and react-scripts...

yarn add v1.9.4
[1/4] Resolving packages...
warning react-scripts > fsevents@2.0.6: Please update: there are crash fixes
[2/4] Fetching packages...
[--------------------------------------------------------------------------------------------------------------] 0/1297(node:168900) [DEP0005] DeprecationWarning: Buffer() is deprecated due to security and usability issues. Please use the Buffer.alloc(), Buffer.allocUnsafe(), or Buffer.from() methods instead.
info fsevents@1.2.9: The platform "win32" is incompatible with this module.
info "fsevents@1.2.9" is an optional dependency and failed compatibility check. Excluding it from installation.
info fsevents@2.0.6: The platform "win32" is incompatible with this module.
info "fsevents@2.0.6" is an optional dependency and failed compatibility check. Excluding it from installation.
[3/4] Linking dependencies...
warning "react-scripts > @typescript-eslint/eslint-plugin@1.6.0" has unmet peer dependency "typescript@*".
warning "react-scripts > @typescript-eslint/parser@1.6.0" has unmet peer dependency "typescript@*".
warning "react-scripts > ts-pnp@1.1.2" has unmet peer dependency "typescript@*".
warning "react-scripts > @typescript-eslint/eslint-plugin > @typescript-eslint/typescript-estree@1.6.0" has unmet peer dependency "typescript@*".
warning "react-scripts > @typescript-eslint/eslint-plugin > tsutils@3.10.0" has unmet peer dependency "typescript@>=2.8.0 || >= 3.2.0-dev || >= 3.3.0-dev || >= 3.4.0-dev".
[4/4] Building fresh packages...
success Saved lockfile.
warning Your current version of Yarn is out of date. The latest version is "1.17.3", while you're on "1.9.4".
info To upgrade, download the latest installer at "https://yarnpkg.com/latest.msi".
success Saved 11 new dependencies.
info Direct dependencies
├─ react-dom@16.8.6
├─ react-scripts@3.0.1
└─ react@16.8.6
info All dependencies
├─ babel-preset-react-app@9.0.0
├─ eslint-config-react-app@4.0.1
├─ fork-ts-checker-webpack-plugin@1.1.1
├─ microevent.ts@0.1.1
├─ react-app-polyfill@1.0.1
├─ react-dev-utils@9.0.1
├─ react-dom@16.8.6
├─ react-error-overlay@5.1.6
├─ react-scripts@3.0.1
├─ react@16.8.6
└─ worker-rpc@0.1.1
Done in 71.31s.

Success! Created react-demo at D:\react\react-demo
Inside that directory, you can run several commands:

  yarn start
    Starts the development server.

  yarn build
    Bundles the app into static files for production.

  yarn test
    Starts the test runner.

  yarn eject
    Removes this tool and copies build dependencies, configuration files
    and scripts into the app directory. If you do this, you can’t go back!

We suggest that you begin by typing:

  cd react-demo
  yarn start

Happy hacking!

react项目搭建成功了！最后启动一下看看效果：

npm start

启动成功！