9/3/2017 - 5:00 AM

Npm Commands

Npm Commands

##Other Nifty Commands

  • npm init
    creates a package.json in root for you
  • npm list
    lists all installed packages
  • npm prune
    removes packages not depended on by your project according to your package.json
  • npm outdated
    tells you which installed packages are outdated with respect to what is current in the npm registry but allowable by the version definition in your package.json
  • npm cache clean (--force)
    limpia el cache
  • npm cache verify
    verifica la integridad del cache

  • npm i paquete i is for install
  • -P, --save-prod: Package will appear in your dependencies. This is the default unless -D or -O are present.
  • -D, --save-dev: Package will appear in your devDependencies.
  • -O, --save-optional: Package will appear in your optionalDependencies.
  • --no-save: Prevents saving to dependencies.

When using any of the above options to save dependencies to your package.json, there are two additional, optional flags:

  • -E, --save-exact: Saved dependencies will be configured with an exact version rather than using npm's default semver range operator.
  • -B, --save-bundle: Saved dependencies will also be added to your bundleDependencies list.

  • npm view bootstrap
    te informa sobre las versiones de la libreria bootstrap
  • npm view boostrap | more
    te muestra la informacion de la libreria bootstrap, pero una pantalla a la vez, CTRL+C (x2) para terminar
  • npm ls | findstr "typescript"
    ¿Cómo puedo saber si "typescript" ya está instalado en la PC?
  • npm list -g --depth=0
    responde a "what npm packages do I have globally installed on this machine"
  • npm install paquete@version
    for example: npm install express@3.0.0 You can also add the --save flag to that command to add it to your package.json dependencies,
    or --save --save-exact flags if you want that exact version specified in your package.json dependencies.

##npm install --save By default, NPM simply installs a package under node_modules. When you're trying to install dependencies for your app/module, you would need to first install them, and then add them (along with the appropriate version number) to the dependencies section of your package.json.

The --save option instructs NPM to include the package inside of the dependencies section of your package.json automatically, thus saving you an additional step.

In addition, there are the complementary options --save-dev and --save-optional which save the package under devDependencies and optionalDependencies, respectively. This is useful when installing development-only packages, like grunt or your testing library.

Update npm 5:

As of npm 5.0.0, installed modules will be added as a dependency (--save) by default.