NPM and Plugin Guide


  • NPM



In some cases, you want to express the compatibility of your package with a host tool or library, while not necessarily doing a require of this host. This is usually referred to as a plugin. Notably, your module may be exposing a specific interface, expected and specified by the host documentation.

NPM 日常使用


# Commands tested on windows
mkdir projectName
cd projectName
# 1. 根据提示输入,一步一步创建 package.json;
npm init
# 2. 直接初始化一个默认的 package.json (y = yes)
npm init -y
mkdir src
cd src
echo off > index.js


nvm -v //检查nvm是否安装成功
Running version 1.1.7.
nvm arch : Show if node is running in 32 or 64 bit mode.
nvm install <version> [arch] : The version can be a node.js version or "latest" for the latest stable version.
Optionally specify whether to install the 32 or 64 bit version (defaults to system arch).
Set [arch] to "all" to install 32 AND 64 bit versions.
Add --insecure to the end of this command to bypass SSL validation of the remote download server.
nvm list [available] : List the node.js installations. Type "available" at the end to see what can be installed. Aliased as ls.
nvm on : Enable node.js version management.
nvm off : Disable node.js version management.
nvm proxy [url] : Set a proxy to use for downloads. Leave [url] blank to see the current proxy.
Set [url] to "none" to remove the proxy.
nvm node_mirror [url] : Set the node mirror. Defaults to https://nodejs.org/dist/. Leave [url] blank to use default url.
nvm npm_mirror [url] : Set the npm mirror. Defaults to https://github.com/npm/cli/archive/. Leave [url] blank to default url.
nvm uninstall <version> : The version must be a specific version.
nvm use [version] [arch] : Switch to use the specified version. Optionally specify 32/64bit architecture.
nvm use <arch> will continue using the selected version, but switch to 32/64 bit mode.
nvm root [path] : Set the directory where nvm should store different versions of node.js.
If <path> is not set, the current root will be displayed.
nvm version : Displays the current running version of nvm for Windows. Aliased as v.


  • 安装包,查看包信息
# Dependency package
npm install <packageName>
npm install <packageName> -f
npm install <packageName> --force
# Dev dependency package
npm install --save-dev <packageName>
npm update <packageName>
npm view react
npm view 的别名
npm info react
npm show react
npm v react
  • Install webpack webpack-cli
# 安装多插件到开发环境依赖
npm install webpack webpack-cli --save-dev
# 简写 i = install, 简写 -D = --save-dev, 简写 -S = --save
npm i webpack webpack-cli --save-dev
npm install webpack webpack-cli -D
# dependency
npm i webpack --save
# global
npm i -g webpack
  • Publish NPM package
# 1. Create your custom package project with package.json;
# 2. Export your package in index.js;
module.exports = customPackage;
# 3. Login, input your NPM account username, password, email
npm login
# 4. Publish
npm publish
# 5. Update
npm version patch
npm version minor
npm version major
npm publish
# 6. 撤销
npm --force unpublish [email protected]
  • NPM Link: Test packages before publish
# cd yx-node
# Go to package directory, such as @daybyday/yx-node
# Generate package link
npm link
# cd blog
# Go to your test project which use your package
# Add link to project package.json
npm link @daybyday/yx-node
# You can test it now.
# Error: React Hooks Error: Hooks can only be called inside the body of a function component
# Solve: 让组件库依赖测试项目的 react,这样就不会存在版本冲突的问题,如下
cd demo/react-components
npm link ../test-component-project/node-modules/react
# 重新build组件,在测试项目中 npm link 'react-components' (packageName)
  • Config
# package version prefix
npm config set save-exact true # 最高优先
npm config set save-prefix "~" # 注意双引号
npm config set save-prefix "^" # 注意双引号, 默认值
# 查看安装包的版本与最新版本比较
npm outdate
#Package Current Wanted Latest Location
#@hot-loader/react-dom 16.13.0 16.14.0 17.0.1 xx
#@testing-library/jest-dom 5.11.1 5.11.9 5.11.9 xx
#dayjs 1.10.3 1.10.4 1.10.4 xx
#enzyme-adapter-react-16 1.15.2 1.15.6 1.15.6 xx
#intersection-observer 0.11.0 0.11.0 0.12.0 xx
#lodash 4.17.19 4.17.20 4.17.20 xx
# 查看 npm 安装路径
npm config get prefix
  • 场景示例
# script 参数
npm build --param1 123


  • npm ERR! Unexpected end of JSON input while parsing near '....0.0","inherits":"^2.'
npm clean cache --force
The problem is with the spaces in URL(C:\Program Files). Try to install the nvm directly in C:/ or in other folder without spaces in the PATH.
  • 发布 NPM 包版本时: npm ERR! 403 403 Forbidden - PUT * - [no_perms] Private mode enable, only admin can publish this module
registry 配置项被修改为非 npmjs, 需要重新设置为 npmjs
npm config set registry https://registry.npmjs.org
  • Git set custom registry when group is using cnpm
# Just only set @xx/xxxxxx for your group's components;
npm config set "@xx:registry" https://npm.xxxxxx.net.cn:/
# Reset default npm registry
npm config set registry https://registry.npmjs.org
# Reset Taobao npm registry
npm config set registry https://registry.npm.taobao.org/
  • npm ERR! code E401 npm ERR! 401 Unauthorized - PUT https://xxx - [unauthorized] Login first
可能是 cnpm 和 npm 设置 registry 的变更导致已登录账号的信息在另外的环境上,暂时是通过修改账号名的方式解决。 npm ERR! 409 Conflict - PUT https://[cnpm]/-/user/org.couchdb.user:[username] - [conflict] User [username] already exists · Issue #1607 · cnpm/cnpmjs.org
  • npm ERR! cb() never called!
# 删除代理
npm config rm proxy
npm config rm https-proxy
  • TypeError [ERR_INVALID_ARG_TYPE]: The "path" argument must be of type string. Received undefined
throw new ERR_INVALID_ARG_TYPE(name, 'string', value);
# (C:\Users\xxx\AppData\Roaming\npm\node_modules\nrm\cli.js:17:20)
# const NRMRC = path.join(process.env.HOME, '.nrmrc');
const NRMRC = path.join(process.env[(process.platform == 'win32') ? 'USERPROFILE' : 'HOME'], '.nrmrc');
  • npm i -g whistle 后 w2 start 的 error
# 无法加载文件 C:\Users\xxx\AppData\Roaming\npm\w2.ps1,因为在此系统上禁止运行脚本。有关详细信息,请参阅 https:/go.
# microsoft.com/fwlink/?LinkID=135170 中的 about_Execution_Policies。
# 所在位置 行:1 字符: 1
# 1. 以理员身份打开 powershell
# 2. 输入 `set-ExecutionPolicy RemoteSigned`
# 3. 输入 Y
# 4. 重试 w2 start

NVM: Node version manager


node_mirror: https://npm.taobao.org/mirrors/node/
npm_mirror: https://npm.taobao.org/mirrors/npm/

安装 NVM


coreybutler/nvm-windows: A node.js version management utility for Windows. Ironically written in Go.
  1. 1.
    Uninstall all node;
  2. 2.
    Download and install nvm; (windows: nvm-setup.zip) nvm-windows
  3. 3.
    Check and find usage;