The WebAssembly exception-handling proposal allows WebAssembly code to throw and catch exceptions. This allows native programs that use exceptions to be ported to the web without an expensive polyfill.
This feature has been enabled in Nightly behind a pref, and I intend to turn this on by default in Firefox 100. Bug: https://bugzilla.mozilla.org/show_bug.cgi?id=wasm-exceptions Bug to turn on by default: https://bugzilla.mozilla.org/show_bug.cgi?id=1759217 Specification: https://github.com/WebAssembly/exception-handling/ Standards Body: WebAssembly Community Group Platform coverage: All platforms that support WebAssembly Preference: javascript.options.wasm_exceptions DevTools bug: N/A Other browsers: * Chrome - Shipped in Chrome 95 (Oct 19, 2021) * Safari - Shipped in Safari 15.2 (Dec 13, 2021) web-platform-tests: * There are web-platform-tests for this feature under `wasm/jsapi` * There are also WebAssembly spec tests shared by all JS engines that test this feature (js/src/jit-test/tests/wasm/spec/exception-handling) This proposal is in Phase 3 of the WebAssembly Community Group. Phase 4 is when a proposal would normally be considered ready to be released. We are shipping now to maintain web compatibility with other browsers that have already released this feature. We have asked and been granted an exception to the exposure guidelines standardization requirements [1] from the technical leadership module committee [2]. [1] https://wiki.mozilla.org/ExposureGuidelines#Ensure_that_the_feature_is_standardized [2] https://wiki.mozilla.org/Modules/Firefox_Technical_Leadership -- You received this message because you are subscribed to the Google Groups "[email protected]" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/a/mozilla.org/d/msgid/dev-platform/23ad96d1-f6f5-4e89-a270-d13b5854b30a%40www.fastmail.com.
