macos - 由 create-react-app 创建后立即添加包不起作用

Question

我的 react 很新(一天前开始)。我使用 create-react-app 命令行来创建应用程序。我按照以下顺序尝试了

• 创建 react 应用程序我的应用程序
• npm 启动

此时应用程序运行良好。然后我做了以下事情

• npm 安装 youtube-api-search
• npm 启动

现在我收到此错误

my-app@0.1.0 start /Users/shanmugharajk/Code/udemy/my-app react-scripts start

sh: react-scripts: command not found npm ERR! file sh npm ERR! code ELIFECYCLE npm ERR! errno ENOENT npm ERR! syscall spawn npm ERR! my-app@0.1.0 start: react-scripts start npm ERR! spawn ENOENT npm ERR! npm ERR! Failed at the my-app@0.1.0 start script. npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

我尝试安装的任何软件包每次都会发生这种情况。

我认为我注意到的一个是当我运行时

• npm install youtube-api-search 或任何软件包，它总是会删除一些软件包。我在安装任何软件包时收到的消息是

npm WARN registry Using stale data from https://registry.npmjs.org/ because the host is inaccessible -- are you offline? npm WARN registry Unexpected warning for https://registry.npmjs.org/: Miscellaneous Warning ENOTFOUND: request to https://registry.npmjs.org/redux failed, reason: getaddrinfo ENOTFOUND registry.npmjs.org registry.npmjs.org:443 npm WARN registry Using stale package data from https://registry.npmjs.org/ due to a request error during revalidation. npm WARN gentlyRm not removing /Users/shanmugharajk/Code/udemy/my-app/node_modules/html-minifier/node_modules/.bin/uglifyjs as it wasn't installed by /Users/shanmugharajk/Code/udemy/my-app/node_modules/html-minifier/node_modules/uglify-js npm WARN gentlyRm not removing /Users/shanmugharajk/Code/udemy/my-app/node_modules/espree/node_modules/.bin/acorn as it wasn't installed by /Users/shanmugharajk/Code/udemy/my-app/node_modules/espree/node_modules/acorn npm WARN gentlyRm not removing /Users/shanmugharajk/Code/udemy/my-app/node_modules/autoprefixer/node_modules/.bin/browserslist as it wasn't installed by /Users/shanmugharajk/Code/udemy/my-app/node_modules/autoprefixer/node_modules/browserslist npm notice created a lockfile as package-lock.json. You should commit this file.

• redux@3.7.1 added 3 packages, removed 1142 packages and updated 3 packages in 27.043s

我无法找出原因。请帮助我。

Answer 1

您正在使用 npm 5。目前它有很多问题。

我建议降级到 npm 4 并重试:

npm install -g npm@4

rm -rf node_modules
rm package-lock.json
npm install

如果这没有帮助，请检查您的互联网连接。 这看起来像是您的网络问题:

getaddrinfo ENOTFOUND registry.npmjs.org registry.npmjs.org:443