Node.js

What is Node.js?

Node.js is an open-source, cross-platform, JavaScript runtime environment that executes JavaScript code outside a web browser. Node.js lets developers use JavaScript to write command-line tools and for server-side scripting—running scripts server-side to produce dynamic web page content before the page is sent to the user's web browser.

NPM

Reference URL

Mirror

Option 1:

> npm config set registry https://registry.npmmirror.com

Option 2:

Alternatively, you can set the registry in the global .npmrc configuration file:

> nano ~/.npmrc

Add the following line:

registry=https://registry.npmmirror.com

Verify

To verify the change, run:

> npm config get registry

Install a Package

> npm install <package_name>

With verbose output:

> npm install <package_name> --verbose

Cache

Clear Cache

> npm cache clean --force

Troubleshooting

node : 无法将“node”项识别为 cmdlet、函数、脚本文件或可运行程序的名称。请检查名称的拼写，如果包括路径，请确保路径正确，然后再试一次。

This error occurs when the Node.js executable is not in the system PATH. To fix this issue, add the Node.js installation directory to the system PATH.

npm : 无法加载文件 npm.ps1，因为在此系统上禁止运行脚本。

This error occurs when the PowerShell execution policy is set to Restricted. To fix this issue, run the following commands:

> get-ExecutionPolicy
> Set-ExecutionPolicy -Scope CurrentUser

Then enter RemoteSigned when prompted.