Question

我用create-react-app创建了一个示例应用程序，我启动了项目并使用npm install prop-types安装了该软件包。我收到了一堆警告：

npm WARN rm not removing /Users/carlosgrijalva/Programming/sample/node_modules/.bin/jest as it wasn't installed by /Users/carlosgrijalva/Programming/sample/node_modules/jest
npm WARN rm not removing /Users/carlosgrijalva/Programming/sample/node_modules/.bin/regjsparser as it wasn't installed by /Users/carlosgrijalva/Programming/sample/node_modules/regjsparser
npm WARN rm not removing /Users/carlosgrijalva/Programming/sample/node_modules/.bin/jsesc as it wasn't installed by /Users/carlosgrijalva/Programming/sample/node_modules/jsesc
npm WARN rm not removing /Users/carlosgrijalva/Programming/sample/node_modules/fsevents/node_modules/.bin/node-pre-gyp as it wasn't installed by /Users/carlosgrijalva/Programming/sample/node_modules/fsevents/node_modules/node-pre-gyp
npm WARN rm not removing /Users/carlosgrijalva/Programming/sample/node_modules/.bin/esparse as it wasn't installed by /Users/carlosgrijalva/Programming/sample/node_modules/esprima
npm WARN rm not removing /Users/carlosgrijalva/Programming/sample/node_modules/.bin/esvalidate as it wasn't installed by /Users/carlosgrijalva/Programming/sample/node_modules/esprima
npm WARN rm not removing /Users/carlosgrijalva/Programming/sample/node_modules/.bin/cssesc as it wasn't installed by /Users/carlosgrijalva/Programming/sample/node_modules/cssesc
npm WARN rm not removing /Users/carlosgrijalva/Programming/sample/node_modules/acorn-globals/node_modules/.bin/acorn as it wasn't installed by /Users/carlosgrijalva/Programming/sample/node_modules/acorn-globals/node_modules/acorn
npm WARN rm not removing /Users/carlosgrijalva/Programming/sample/node_modules/@babel/generator/node_modules/.bin/jsesc as it wasn't installed by /Users/carlosgrijalva/Programming/sample/node_modules/@babel/generator/node_modules/jsesc

当我运行npm start时，出现以下错误：

> sample@0.1.0 start /Users/carlosgrijalva/Programming/sample
> 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! sample@0.1.0 start: `react-scripts start`
npm ERR! spawn ENOENT
npm ERR!
npm ERR! Failed at the sample@0.1.0 start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/carlosgrijalva/.npm/_logs/2018-11-02T15_33_21_597Z-debug.log

以下是我的npm，node和create-react应用的版本

node --version: v8.10.0

create-react-app --version: 2.0.4

npm --version: 5.6.0

我感觉到问题是同时安装了纱和NPM？不过不确定，有人遇到了这个问题吗？

Answer 1

同时安装Yarn和NPM很好，不会导致任何问题。实际上，许多项目都同时具有yarn和npm，以便于更多用户使用。

“ sh：react-scripts：未找到命令”：关于此问题，也许您的node_modules不能正常工作。

因此，删除您的node_modules，然后再次npm npm install 。

关于警告，您应该添加具有 npm install prop-types -save的软件包，而不是npm install prop-types 。

使用create-react-app后，我安装的所有软件包都会破坏我的代码吗？

1 个答案: