为什么 create-react-app 不创建新应用

Question

我使用 npm 在 Node JS 上安装了最新版本，但无法运行 create-react-app。出现以下问题：

Creating a new React app in C:\wamp64\www\bob.

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

npm ERR! Unexpected end of JSON input while parsing near '....tgz"}},"2.3.4":{"nam'

npm ERR! A complete log of this run can be found in:
npm ERR! C:\Users\Ivana\AppData\Roaming\npm-cache_logs\2019-02-26T21_21_48_727Z-debug.log

Aborting installation.
npm install --save --save-exact --loglevel error react react-dom react-scripts has failed.

Deleting generated file... package.json
Deleting bob/ from C:\wamp64\www
Done.

版本：

Node v10.15.1
npm 6.7.0

有人可以帮忙吗？

运行 npm cache clean --force 后

发生另一个错误：

$ create-react-app 鲍勃

Creating a new React app in C:\Users\Ivana\bob.

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

npm ERR! Unexpected end of JSON input while parsing near '...,"@babel/plugin-synta'

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\Ivana\AppData\Roaming\npm-cache\_logs\2019-02-27T09_18_28_856Z-debug.log

Aborting installation.
  npm install --save --save-exact --loglevel error react react-dom react-scripts has failed.

Deleting generated file... package.json
Deleting bob/ from C:\Users\Ivana
Done.

Answer 1

来自https://github.com/facebook/create-react-app#creating-an-app

npx create-react-app my-app

（npx 随 npm 5.2+ 及更高版本一起提供）

但是你用

create-react-app my-app

如果您使用 npm 5.1 或更早版本，则不能使用 npx。相反，全局安装 create-react-app：

npm install -g create-react-app

现在你可以运行：

create-react-app my-app