WebAssembly, a portable code format that could make for a faster web, has moved to minimum viable product (MVP) status, with browser vendors now able to switch WebAssembly on by default.
A recent bulletin from Mozilla Senior Staff Engineer Luke Wagner said representatives of the four major browsers agreed that the design and binary format were complete to the extent that no further design work was doable without implementation experience and significant usage. Browsers represented included Google Chrome, Microsoft Edge, Mozilla Firefox, and WebKit, which is Apple’s browser engine for Safari, according to the bulletin posted on a World Wide Web Consortium mailing list.
WebAssembly could possibly use other languages, such as Python, in the browser, depends on the language’s ecosystem, Wagner said. "One requirement for supporting a language is that WebAssembly provides the necessary features to run that language efficiently. For many languages, this requires adding garbage collection [memory management] features to WebAssembly, which is on the road map but will take at least a year or two." The other challenge of supporting a language is porting over language libraries and frameworks to run in a browser and use web APIs.