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Uninstalling Packages with npm

3:03 with Andrew Chalkley

In this video, we'll remove packages that are no longer needed.

Terminal Commands

  • Clear the screen
    • clear

npm Command Line Usage

  • See list of commands

    • npm

  • Uninstalling packages

    • Uninstall a local dependency: npm uninstall <package name>
      • e.g. npm uninstall colors
    • Uninstall a local dependency and remove frompackage.json: npm uninstall <package name> --save
      • e.g. npm uninstall colors --save
    • Uninstall a local development dependency and remove frompackage.json: npm uninstall <package name> --save-dev
      • e.g. npm uninstall mocha --save-dev
    • Uninstall a global dependency: npm uninstall <package name> -g
      • e.g. npm uninstall http-server -g

Further Reading

We've installed packages and updated packages. 0:00 The next natural step would be to uninstall them. 0:04 Let's say I wanted to uninstall the colors package from my project. 0:07 We'd use NPMs uninstall command, followed by their package name. 0:11 This removes or deletes the colors folder from the nodes module folder. 0:18 However if I type in NPM install again, it'll reinstall the colors. 0:23 Because the package is listed in the package.json file, 0:28 it's installed every time we type in NPM install. 0:32 To remove it permanently or at least until we actually want it to be 0:36 a dependency again, we can use the dash dash save flag. 0:40 Note that now, not only is it removed from the node_modules folder, 0:47 it's also removed from the package.json file. 0:52 If you want to get rid of a development dependency, 0:56 you can do NPM, uninstall, the name of 1:03 the module you want to uninstall and then --save dev. 1:08 Finally, to uninstall a global package, 1:18 you type in NPM uninstall then the package name. 1:24 And the -g flag. 1:33 I am going to uninstall my http server utility from my local machine. 1:36 And if I spelt uninstall correctly, you won't get this. 1:45 Oh it's gone. 1:50 We've gone over the most common use cases of NPM in your day to day life. 1:52 We've searched for packages, installed, updated and uninstalled packages. 1:58 But when you type in NPM, a lot of commands are shown. 2:03 I encourage you to take your time and 2:06 take a look at some of these that look interesting to you, 2:10 and use the help command to explore the things that NPM has to offer. 2:16 You can also go to the documentation site https://docs.npmjs.com, 2:23 which is an awesome resource if you get stuck. 2:31 It's also a great place to learn even more about NPM. 2:35 There you have it, NPM. 2:40 By now you should be able to maintain your dependencies in your own Java script 2:41 projects. 2:45 You also know how to install global utilities. 2:46 If you still have burning questions on NPM, try the faq command. 2:49 If you need more, jump in the forum and ask your question there. 2:54 With these new NPM skills under your belt, the sky's the limit for 2:57 the types of projects you can build in JavaScript. 3:00

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