Why every frontend team is switching to Bun in 2026
It is not just about speed anymore. Bun 2.0 shipped a package manager, test runner, and bundler that actually work together.
Two years ago, Bun was an interesting experiment. Today, it is eating Node.js's lunch. Bun 2.0 shipped last month with a complete toolkit that finally delivers on the promise of an all-in-one JavaScript runtime.
The numbers speak
In our benchmarks, Bun 2.0 installs dependencies 8x faster than npm, runs tests 5x faster than Jest, and bundles code 3x faster than esbuild. But speed was never the real barrier to adoption.
Why now
What changed is reliability. Bun's package manager now has near-perfect npm compatibility. The test runner supports the full Jest API. The bundler handles edge cases that previously required Webpack plugins.
Teams are switching not because Bun is faster, but because it replaces five tools with one. Less configuration, fewer compatibility issues, and a single upgrade path.
The ecosystem shift
Major frameworks are noticing. Next.js 15 added first-class Bun support. Remix and Astro are close behind. When the frameworks move, the ecosystem follows.
Dev Tools Editor
Developer tools editor and open source advocate. Writes about frameworks, languages, and the culture of building software. Contributor to several popular OSS projects.
Liked this? You will love the briefing.
One email. Every morning. The tech that matters.