Npm Install Flags

Yarn install is used to install all dependencies for a project. This is most commonly used when you have just checked out code for a project, or when another developer on the project has added a new dependency that you need to pick up.

Combine the install process of multiple packages and add them as dependencies to your project by passing multiple packages to the npm install command including the --save flag. Install Package and Save as devDependency. I saw the list couple of days ago but I can\'t recall where. Basically, the flags were shortcut for normal flags. Npm install --save-dev.

If you are used to using npm you might be expecting to use --save or --save-dev. These have been replaced by yarn add and yarn add --dev. For more information, see. Running yarn with no command will run yarn install, passing through any provided flags. If you need reproducible dependencies, which is usually the case with the continuous integration systems, you should pass --frozen-lockfile flag. Yarn install Install all the dependencies listed within package.json in the local node_modules folder. Yarn install --check-files Verifies that already installed files in node_modules did not get removed.

Yarn install --flat Install all the dependencies, but only allow one version for each package. On the first run this will prompt you to choose a single version for each package that is depended on at multiple version ranges. These will be added to your package.json under a resolutions field.

Every so often I run into an or asks me to npm install gulp -g to run tests. My training as a developer has made it so the term \'global\' makes me gag. The -g flag is antithetical to what got me excited about node in the first place, which is why I don\'t even with -g. One-Step Installs The number one reason why I got into node in the first place was that setting up a dev environment was easy enough that a designer or product manager could do it. In other web server setups I\'ve worked with, like Rails or Apache, getting a designer set up to run the server locally was a sisyphean ordeal.

I\'m sure using numerous global modules was a reasonable idea when only full-fledged engineers touched code and engineers worked on one codebase on one machine, but that time is long past. Seeing how Node worked was a dream come true. All I had to do was set up Node, clone a git repo, and run npm install. No need to install Java, finagle your PATH, or copy a config file into some obscure OS-dependent /var/blah directory. All of a sudden, I had a huge weight off my shoulders when the product guys could modify the home page copy without going through me. The -g flag breaks this idyllic setup. Saying \'run npm install gulp -g after npm install\' doesn\'t seem like much, but it sneaks in a great deal of operational complexity.

The first question is, \'what version of gulp?\' Suppose tomorrow gulp releases a new version that breaks your code. Now everybody who installs gulp will be unable to run tests. That\'s ok, you can fix it. But then you have to get everyone to upgrade gulp - time to send out an email that everybody\'s going to ignore anyway.

Or you could tell everyone to run npm install and npm upgrade -g every time they pull, which will ensure that nobody on your team can use gulp until you push a fix. And what if somebody needs to check out an old commit that will only work with an older version of gulp?

If only you had a way to map which commit depended on which version of gulp. Oh wait, that\'s called package.json. Is it worth it to type gulp instead of./node_modules/gulp/bin/gulp.js, especially when you can just create a shortcut in your package.json scripts section or in a Makefile?

I love some good syntactic sugar as much as the next developer, but I don\'t think its worth the hassle. When -g is Useful I\'d argue the only case where -g is useful would be modules like,,. When your primary purpose is to manage the bare minimum global dependencies necessary to run npm install rather than interact directly with application code, I can see the merit. Why am I ok with node and npm as dependencies that you need to install globally? Because, at bare minimum, you need to be able to parse the package.json file and install other dependencies.

To automatically install the other dependencies, you need some software, so you might as well install globally. Since npm is an evolving codebase,, but thankfully. Conclusion My mentor in undergrad,, once wrote that \'everyone knows that debugging is twice as hard as writing a program in the first place. So if you\'re as clever as you can be when you write it, how will you ever debug it?\' I\'d argue that getting a non-technical product or marketing person to be comfortable making small text changes without blowing up your code is twice as hard as debugging it. If you value getting the less technical members of your team involved, I\'d recommend not going overboard on syntactic sugar and make it as brain-dead simple as possible to get started with your software.

Yarn install is used to install all dependencies for a project. This is most commonly used when you have just checked out code for a project, or when another developer on the project has added a new dependency that you need to pick up.

Combine the install process of multiple packages and add them as dependencies to your project by passing multiple packages to the npm install command including the --save flag. Install Package and Save as devDependency. I saw the list couple of days ago but I can\'t recall where. Basically, the flags were shortcut for normal flags. Npm install --save-dev.

If you are used to using npm you might be expecting to use --save or --save-dev. These have been replaced by yarn add and yarn add --dev. For more information, see. Running yarn with no command will run yarn install, passing through any provided flags. If you need reproducible dependencies, which is usually the case with the continuous integration systems, you should pass --frozen-lockfile flag. Yarn install Install all the dependencies listed within package.json in the local node_modules folder. Yarn install --check-files Verifies that already installed files in node_modules did not get removed.

Yarn install --flat Install all the dependencies, but only allow one version for each package. On the first run this will prompt you to choose a single version for each package that is depended on at multiple version ranges. These will be added to your package.json under a resolutions field.

Every so often I run into an or asks me to npm install gulp -g to run tests. My training as a developer has made it so the term \'global\' makes me gag. The -g flag is antithetical to what got me excited about node in the first place, which is why I don\'t even with -g. One-Step Installs The number one reason why I got into node in the first place was that setting up a dev environment was easy enough that a designer or product manager could do it. In other web server setups I\'ve worked with, like Rails or Apache, getting a designer set up to run the server locally was a sisyphean ordeal.

I\'m sure using numerous global modules was a reasonable idea when only full-fledged engineers touched code and engineers worked on one codebase on one machine, but that time is long past. Seeing how Node worked was a dream come true. All I had to do was set up Node, clone a git repo, and run npm install. No need to install Java, finagle your PATH, or copy a config file into some obscure OS-dependent /var/blah directory. All of a sudden, I had a huge weight off my shoulders when the product guys could modify the home page copy without going through me. The -g flag breaks this idyllic setup. Saying \'run npm install gulp -g after npm install\' doesn\'t seem like much, but it sneaks in a great deal of operational complexity.

The first question is, \'what version of gulp?\' Suppose tomorrow gulp releases a new version that breaks your code. Now everybody who installs gulp will be unable to run tests. That\'s ok, you can fix it. But then you have to get everyone to upgrade gulp - time to send out an email that everybody\'s going to ignore anyway.

Or you could tell everyone to run npm install and npm upgrade -g every time they pull, which will ensure that nobody on your team can use gulp until you push a fix. And what if somebody needs to check out an old commit that will only work with an older version of gulp?

If only you had a way to map which commit depended on which version of gulp. Oh wait, that\'s called package.json. Is it worth it to type gulp instead of./node_modules/gulp/bin/gulp.js, especially when you can just create a shortcut in your package.json scripts section or in a Makefile?

I love some good syntactic sugar as much as the next developer, but I don\'t think its worth the hassle. When -g is Useful I\'d argue the only case where -g is useful would be modules like,,. When your primary purpose is to manage the bare minimum global dependencies necessary to run npm install rather than interact directly with application code, I can see the merit. Why am I ok with node and npm as dependencies that you need to install globally? Because, at bare minimum, you need to be able to parse the package.json file and install other dependencies.

To automatically install the other dependencies, you need some software, so you might as well install globally. Since npm is an evolving codebase,, but thankfully. Conclusion My mentor in undergrad,, once wrote that \'everyone knows that debugging is twice as hard as writing a program in the first place. So if you\'re as clever as you can be when you write it, how will you ever debug it?\' I\'d argue that getting a non-technical product or marketing person to be comfortable making small text changes without blowing up your code is twice as hard as debugging it. If you value getting the less technical members of your team involved, I\'d recommend not going overboard on syntactic sugar and make it as brain-dead simple as possible to get started with your software.