6.0.9

weave-os/router6.0.9Sep 1, 2026by emscripten-bot

Upgrading?

AI Summary

A minor update that marks WASM_BINDGEN as experimental and optimizes the cache-hit/miss paths for cross-origin storage using streaming.

Key Highlights

  • WASM_BINDGEN marked as experimental with compiler warning
  • Optimized cross-origin storage cache using `instantiateStreaming`

New Features

  • Optimized cache handling for cross-origin storage

Full Release Notes

## What's Changed
- The `WASM_BINDGEN` setting is now marked experimental, and enabling it
  produces a compiler diagnostic warning, since the integration is still
  evolving and subject to change. (#27616)
- The `-sCROSS_ORIGIN_STORAGE` cache-hit and cache-miss paths now use
  `WebAssembly.instantiateStreaming()` (via `Blob.stream()` and a `tee()`'d
  network body respectively), so enabling the flag no longer loses the
  download/compile overlap of the standard streaming path. (#27609)


## Contributors
Thanks to the following contributors: @sbc100 (17) @brendandahl (3) @guybedford (3) @tomayac (2) @dschuff (1)

**Full Changelog**: https://github.com/emscripten-core/emscripten/compare/6.0.8...6.0.9

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