首先react需要安装nodejs
然后安装react
https://www.runoob.com/react/react-install.html
TypeError [ERR_INVALID_ARG_TYPE]: The "path" argument must be of type string. Received undefined
at validateString (internal/validators.js:117:11)
at Object.join (path.js:375:7)
at noopServiceWorkerMiddleware (D:IDEAworkxlore-util ode_modules eact-dev-utils oopServiceWorkerMiddleware.js:14:26)
at Layer.handle [as handle_request] (D:IDEAworkxlore-util ode_modulesexpresslib outerlayer.js:95:5)
at trim_prefix (D:IDEAworkxlore-util ode_modulesexpresslib outerindex.js:317:13)
at D:IDEAworkxlore-util ode_modulesexpresslib outerindex.js:284:7
at Function.process_params (D:IDEAworkxlore-util ode_modulesexpresslib outerindex.js:335:12)
at next (D:IDEAworkxlore-util ode_modulesexpresslib outerindex.js:275:10)
at launchEditorMiddleware (D:IDEAworkxlore-util ode_modules eact-dev-utilserrorOverlayMiddleware.js:20:7)
at Layer.handle [as handle_request] (D:IDEAworkxlore-util ode_modulesexpresslib outerlayer.js:95:5)
at trim_prefix (D:IDEAworkxlore-util ode_modulesexpresslib outerindex.js:317:13)
at D:IDEAworkxlore-util ode_modulesexpresslib outerindex.js:284:7
at Function.process_params (D:IDEAworkxlore-util ode_modulesexpresslib outerindex.js:335:12)
at next (D:IDEAworkxlore-util ode_modulesexpresslib outerindex.js:275:10)
at handleWebpackInternalMiddleware (D:IDEAworkxlore-util ode_modules eact-dev-utilsevalSourceMapMiddleware.js:42:7)
at Layer.handle [as handle_request] (D:IDEAworkxlore-util ode_modulesexpresslib outerlayer.js:95:5)
一般是因为版本问题。
我这边的解决办法：
- 在package.json中，把"react-scripts": "^3.3.0" 替换为"react-scripts": "^3.4.0"
- 删除node_modules文件夹
- 执行npm install 或者 yarn install重新安装依赖包（在工程所在文件夹shift + 右键 - 在此处打开命令窗口，然后输入， 或者直接cmd然后cd到所在位置也行）
然后
yarn start
启动