Rspack 1.7 Released: Final 1.x Update Before 2.0 Transition

What's New in the Last 1.x Version of the Rust-Based Web Bundler?

Apr. 12, 2026 at 8:58am

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A glowing, neon-lit 3D illustration of various interconnected tech components, representing the digital infrastructure and innovations powering Rspack's web development tools.Rspack's 1.7 release brings stability and compatibility improvements, signaling a pivotal transition to the 2.0 era of this Rust-based web bundler.Boston Today

Rspack, a Rust-based web bundler, has released version 1.7, marking the final update in the 1.x series before transitioning to version 2.0. This release focuses on stabilizing existing features and improving plugin compatibility, offering several enhancements for developers.

Why it matters

The Rspack team has made significant contributions to the SWC community, addressing compatibility issues that could potentially break existing plugins after SWC upgrades. By adopting the cbor serialization scheme and introducing an Unknown variant for enum types in the AST, they've improved fault tolerance and reduced the risk of plugin breakage.

The details

Rspack 1.7 brings exciting new features, but it also requires careful consideration of SWC plugin versions to ensure a smooth migration. The Rspack team has provided guidance to help developers navigate these changes.

  • Rspack version 1.7 was released on April 12, 2026.

The players

Rspack

A Rust-based web bundler that has released version 1.7, marking the final update in the 1.x series before transitioning to version 2.0.

SWC

A community that the Rspack team has made significant contributions to, addressing compatibility issues that could potentially break existing plugins after SWC upgrades.

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The takeaway

Rspack 1.7 focuses on stabilizing existing features and improving plugin compatibility, offering several enhancements for developers. However, the transition to Rspack 2.0 will require careful consideration of SWC plugin versions to ensure a smooth migration.