What Is a Package Manager?
Package managers, also known as package management systems, are groups of tools that make it easier to install, delete, change, upgrade, and configure software. They also audit dependencies and flag which programs need to be updated to reduce potential security risks. Developers in the modern world frequently use packaged software, which encapsulates all of the components required to make a piece of software run on a system in a single file. Even if it doesn't include everything, it at least has pointers to other places where the system can get the data it needs.
What Is NPM?
What Is Yarn?
Features of NPM and Yarn
NPM and Yarn share the following key characteristics:
- Run scripts remotely
You can run scripts remotely in NPM and Yarn by using the
npx command in NPM and the
yarn dlx command in Yarn.
- Create lock files
Both package managers automatically create a version lock file such as
package-lock.json in NPM, and
yarn.lock in Yarn.
- Use workspaces
Workspaces, which let you manage dependencies for numerous projects from a single repository, are supported by both Yarn and NPM.
Let's also take a look at Yarn’s unique features:
Instead of using the node modules folder to map project dependencies, Yarn creates a single
.pnp.cjs file. As a result, dependency trees are simplified, projects launch faster, and package installations take less time.
When getting and installing packages, Yarn provides a built-in license checker.
Zero-Installs works with Plug'n'Play since it maps packages kept in the offline cache using the .
pnp.cjs file. This enables you to rapidly retrieve and set up saved packages.
NPM Vs. Yarn: The Comparison
Below is an outline of some of the differences between Yarn and NPM.
npm install command, NPM installs dependencies one at a time.
package-lock.json version lock file is also created by NPM. Users can transfer version info from NPM to Yarn by using this file, which is also supported by Yarn.
NPM and Yarn version 1 handle dependencies in a comparable manner. The
package.json file, located in the project's
node modules subdirectory, is where project metadata is saved.
Since version 2, Yarn no longer keeps track of dependencies in the node modules directory. Instead, Yarn 2.0 uses the Plug'n'Play feature, which generates a single
.pnp.cjs file. The dependency hierarchy of a project is depicted in this file.
The Yarn command is used to install dependencies through
yarn. You can add numerous files at once because it concurrently, or in parallel, installs dependencies. A lock file, which contains the precise list of dependencies utilized for the project, is created when dependencies are installed. The name of this file is
Speed and Performance
As mentioned above, Yarn installs dependencies in parallel, whereas NPM installs them sequentially. As a result, Yarn installs larger files more quickly than NPM.
The ability to store dependency files in the offline cache is provided by both programs. Users can now install dependencies even when they're not connected to the internet.
Additionally, Yarn employs the Zero-Install capability as of version 2. With almost no delays, this capability leverages the dependency map from the
.pnp.cjs file to carry out an offline dependency install.
Security concerns dominated early implementations of NPM. With the release of version 6, NPM now performs a security evaluation each time you install a package. This ensures that no dependencies are conflicting, and it helps to prevent vulnerabilities.
A manual audit can also be performed using the
npm audit command. Use
npm audit fix to resolve issues if NPM finds any vulnerabilities.
While downloading packages, Yarn does a background security check. To make sure it doesn't download any dangerous scripts or create any dependency problems, it uses the package license information.
To ensure secure data transit, both programs make use of encryption techniques. While NPM employs the SHA-512 (Secure Hash Algorithm) stored in the
package-lock.json file, Yarn verifies packages using the checksum.
Advantages of NPM and Yarn
- Manages globally-installed projects’ tools.
- Manages local dependencies of projects’ tools.
- Provides package-lock.json, which displays all dependencies of the project.
- Manages multiple versions of code and code dependencies.
- Has standalone tools you can download and use right away.
- Supports parallel installation and Zero-Installs, both of which dramatically increase performance.
- Offers a more secure form of version locking with newer versions of Yarn.
- Has an active user community.
Disadvantages of NPM and Yarn
- The online NPM registry may lose its dependability in the event of performance concerns. This also implies that in order to install packages from the registry, NPM needs network access.
- Reading command output might be challenging.
- Has security flaws installing packages even though there have been numerous upgrades in various versions.
- Yarn is incompatible with Node.js versions prior to 5.
- Yarn has shown problems when trying to install native modules.
As you can see, both NPM and Yarn technologies have similar uses. Therefore, when deciding between them, you should consider your project's priorities as well as your own preferences. Yarn and NPM share a number of instructions, and both are rather simple to use.
Although it can sometimes be difficult to visually discern the result of the command when several packages are being installed, the command output is typically simple to read and understand.
Keep in mind that NPM and Yarn are compatible (so far), so you can switch between them as needed while a project is being developed by using the relevant parameters.