Clone this repo:
  1. ae43bbe [spec] Layering: Improve way of throwing on detach by Daniel Ehrenberg · 3 hours ago master
  2. 1726d96 [editorial] Fix multiple formatting issues. (#779) by Brad Nelson · 13 days ago
  3. 789a93b [editorial] Switch to using display mode. (#778) by Brad Nelson · 14 days ago
  4. a6b9729 [editorial] Moved reference to encoding to prevent double href. (#777) by Brad Nelson · 14 days ago
  5. 1fcfb08 [editorial] Remove !important from css selector. (#776) by Brad Nelson · 2 weeks ago

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This repository holds the sources for the WebAssembly draft specification (to seed a future WebAssembly Working Group), a reference implementation, and the official testsuite.

A formatted version of the spec is available here:,

Participation is welcome. Discussions about new features, significant semantic changes, or any specification change likely to generate substantial discussion should take place in the WebAssembly design repository first, so that this spec repository can remain focused. And please follow the guidelines for contributing.