6.0.9
multimodal-art-projection/YuE6.0.9Sep 1, 2026by emscripten-bot
Upgrading?
Release notes summary
This release marks the WASM_BINDGEN setting as experimental with a compiler diagnostic warning, reflecting an evolving integration. It also improves CROSS_ORIGIN_STORAGE caching paths to use streaming instantiation, preserving download/compile overlap.
Key Highlights
- WASM_BINDGEN setting marked experimental and now emits a compiler diagnostic warning
- -sCROSS_ORIGIN_STORAGE cache-hit and cache-miss paths now use WebAssembly.instantiateStreaming()
- Streaming is achieved via Blob.stream() for cache hits and a tee'd network body for cache misses
- Enabling CROSS_ORIGIN_STORAGE no longer loses download/compile overlap
New Features
- Streaming WebAssembly instantiation for CROSS_ORIGIN_STORAGE cache hits and misses
- Preserved download/compile overlap when cross-origin storage is enabled
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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