What Is Yarn?
1. Speed and Performance
Yarn has been optimized for performance. Thanks to its caching mechanism for intermediate results, package installation is much faster compared to npm. Additionally, Yarn allows concurrent package downloads, speeding up the project building process.
2. Security and Reliability
Yarn introduces safety measures to ensure project security. It uses a "yarn.lock" file to guarantee package version consistency, helping to avoid conflicts and errors. Moreover, Yarn includes built-in error checking, making it easier to manage package issues.
Yarn is scalable and suitable for managing projects of various sizes. Whether you're working on a small web application or a large open-source project, Yarn assists in handling dependencies and libraries.
4. Ease of Use
Yarn is relatively user-friendly. It offers an intuitive command-line interface that allows developers to quickly manage projects. Creating new projects, installing packages, and performing updates are straightforward operations.
5. Active Community and Support
How Does Yarn Work?
Yarn operates on a similar principle to npm but with some enhancements. Here are the main concepts related to how Yarn works:
1. Package Installation
To install packages using Yarn, you need to run the
yarn add [package_name] command. Yarn checks the availability of the package in the npm repository and installs it in the project's local directory. By default, information about the installed package is saved in the
2. Synchronization with yarn.lock
Yarn uses the
yarn.lock file, which contains information about dependencies and their exact versions. This file is automatically created and updated during package installation or updates. It ensures version consistency across different development environments.
3. Package Updates
To update packages to their latest versions, you can use the
yarn upgrade command. Yarn notifies you of available updates and allows you to choose which packages to update. The versions of updated packages are recorded in the
4. Installing Development Dependencies
Yarn also allows the installation of development dependencies, such as testing tools, linters, and others, using the
yarn add --dev [package_name] command. These packages are not included in production, making it easier to manage the development environment.
5. Working with a Proxy
Yarn offers proxy support, which is useful when using it in corporate environments or behind a firewall. You can configure the proxy using appropriate environment variables.