Docusaurus to Astro migration
How Yarn improved website performance and DX with an Astro migration
We migrated the Yarn package manager's high-traffic website from Docusaurus to Astro, delivering a modern platform that delighted their massive developer community, with a Lighthouse score improvement from 85 to 99.
Background
Yarn is a critical tool in the JavaScript ecosystem, serving millions of developers worldwide. Their website is not just documentation; it's a vital resource where developers discover packages, learn about new features, and evaluate whether Yarn is right for their workflow.
Challenge
Outdated codebase making it difficult and time-consuming to ship updates
Website performance limitations that couldn't handle traffic spikes from new version launches
Poor user experience with confusing package page URLs and missing modern UI elements
High maintenance burden diverting engineering resources from core product development
Solution
Rebuilding the entire website architecture, modernizing the codebase, and streamlining the development workflow.
Results
Lighthouse score improved from 85 to 99
Faster development velocity, enabling rapid feature shipping
Cleaner and maintainable codebase, reducing engineering overhead
Instant package search results even under peak traffic
Lucky Media proved to be exactly the partner we needed. Initially brought on to tackle technical debt, they quickly became an integral part of our team. Their ability to independently manage complex refactoring work was impressive, and their responsive, collaborative approach made them a pleasure to work with.
Nate Irwin
Chief Product Officer @ Trailhead LabsLet’s chat
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Challenges
The previous Yarn website presented significant constraints that threatened the team's ability to innovate and respond to community needs:
Slow development workflow slowing down innovation
The Docusaurus-based site required significant developer effort for even minor updates. Build times were slow, and it was difficult to make changes.
Performance limitations under heavy traffic
With a major new version launch on the horizon, Yarn knew its website traffic would surge. For a tool that champions speed and efficiency, a slow website undermined its brand promise and created a poor first impression for new users exploring the platform.
Poor user experience driving friction
Developers demand intuitive, efficient experiences. The old site's complex URL structure and lack of modern interface elements made finding package information unnecessarily difficult.
Engineering resources stretched thin
The Yarn development team's engineering resources were being diverted from innovation to basic site upkeep, slowing overall project progress and preventing the team from being as responsive to community needs as they wanted to be.
Our solution
We delivered a solution focused on getting Yarn to market faster with new features and improvements, so they could start seeing results sooner!
Modernizing the tech stack
We immediately rebuilt the entire website from the ground up using Astro, a next-generation web framework built for speed and developer experience. This wasn't just a lift-and-shift migration; it was a strategic re-platforming designed to eliminate friction from the development workflow.
Why this matters: With Astro, we gave the Yarn team a modern, intuitive development experience. Faster builds, simpler component architecture, and a more streamlined codebase meant that the team could now make changes and see results almost instantly. This directly translates to faster iteration cycles and the ability to ship features with confidence.
Optimized for peak traffic and scale
We used Astro's innovative island architecture to create a site that ships zero JavaScript by default, resulting in exceptional performance. The Lighthouse score improved from 85 to 99, reflecting a dramatic leap in speed, accessibility, and adherence to web best practices. We also completely redesigned the package pages, implementing clean, intuitive, and SEO-friendly URLs and introducing UI elements like loaders to provide instant visual feedback.
Why this matters: Even under peak traffic from major version launches, the package search provides instant results, delivering the responsive experience developers expect.
Cleaner architecture for easier maintenance
The new Astro site is built with a clean, well-organized codebase that eliminates technical debt. We established clear conventions and best practices that make the code easy to navigate and modify. The Yarn team can now make updates and deploy changes with minimal friction, enabling them to maintain a rapid release cadence without being slowed down by maintenance overhead.
Why this matters: Developer experience is not just about user-facing features; it's also about the experience of the team building the product. By making the codebase easier to work with, we freed up the Yarn team to focus on what matters most: shipping features and improvements that serve their community.
Let’s chat
We partner with a limited number of brands each quarter to ensure senior-level attention on every project.
Why it worked
This project succeeded because we aligned our entire process with Yarn's primary business goal: enabling the team to ship faster. We understood that every hour saved on website maintenance was an hour they could spend building the package manager. By creating a modern, efficient, and robust development system, we didn't just deliver a website, we delivered a strategic advantage, allowing Yarn to capitalize on market opportunities faster and focus its engineering resources on what matters most: the product itself.
Let’s chat
We partner with a limited number of brands each quarter to ensure senior-level attention on every project.
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