npm-notes.md

npm notes

• npm help install
• npm apihelp install
• npm init: interactively create package.json
• npm set init-author-name
• npm get init-author-name
• npm config delete init-author-name
• Configs are saved in .npmrc
• npm install lodash --save|-S: install package and save it in package.json
• npm uninstall lodash --save: uninstall package and remove it in package.json
• npm install lodash --save-dev|-D: install package that is dev only not for prod and save it in package.json
• npm list --depth 1 --global true --long true
• npm i gulp -g: install package globally for all projects
• npm list -g --depth 0: check global packages
• npm i [email protected]: install specific semantic version of the package
• npm i [email protected]: install latest of 1.8 of the package
• npm i [email protected]: install latest of 1.8 of the package
• npm i underscore@">=1.8 <2.0": install any version in the range of the package
• npm i [email protected] --save --save-exact: put exact version in package.json
• npm i: install packages described in package.json
• in package.json
  • "*" or "x": the latest version
  • "^1.7.1": at least 1.7.1
  • "~1.7.1": the latest of the minor release 1.7
  • "1.7.1": exact version 1.7.1
• npm update: easy update dependencies to the latest version

Advanced npm notes

• npm install https://github.com/...: install from git repo
• npm i gist:<hash>: install from gits
• npm i ../../hello-mars: install from folder
• www.npmjs.com: npm registry
• npm search underscore
• npm prune: remove installed packages not in package.json
• npm prune --production: remove installed packages not in package.json production
• npm repo underscore: go to the repo of the package
• npm i npm@latest -g: upgrade npm. must be admin
• npm test: in package.json. Two important scripts:

  "scripts": {
      "test": "node test.js",
      "start": "node index.js"
  }