Google Summer of Code 2026 With the Kotlin Foundation: Recap
The Kotlin/Wasm backend received expanded recursion support. A new global tool was developed to support the Kotlin open-source ecosystem.
Verified State Diff
Impact & Verification Analysis
Kotlin developers targeting WebAssembly and maintainers of the Kotlin open-source ecosystem.
Improving recursion support is essential for the maturity of Kotlin/Wasm as a viable production target for complex logic, while ecosystem tools reduce friction for open-source contributors.
Full Fact Overview
The Kotlin Foundation utilized the Google Summer of Code 2026 program to facilitate targeted development on the Kotlin/Wasm compiler backend and ecosystem tooling. The primary technical focus was addressing limitations in recursion handling within the WebAssembly target, which is critical for complex algorithmic execution in browser-based Kotlin applications. Additionally, a new global utility was introduced to streamline ecosystem-wide operations, marking the fourth consecutive year of the Foundation's structured mentorship-driven development model.