Contact emails...@chromium.org Explainer https://github.com/WebAssembly/js-promise-integration/blob/main/proposals/js-promise-integration/Overview.md
Specification https://github.com/WebAssembly/js-promise-integration/blob/main/proposals/js-promise-integration/Overview.md Design docs https://docs.google.com/document/d/16Us-pyte2-9DECJDfGm5tnUpfngJJOc8jbj54HMqE9Y/edit#heading=h.n1atlriavj6v Summary Stack Switching denotes a technology that allows programs to suspend and resume computation. This is an active area that is part of the WebAssembly standards track. See https://github.com/WebAssembly/stack-switching and https://github.com/WebAssembly/meetings/tree/main/stack. This particular feature refers to the integration between JavaScript Promises and stack switching. This is described in more detail in https://docs.google.com/document/d/16Us-pyte2-9DECJDfGm5tnUpfngJJOc8jbj54HMqE9Y/edit# Blink componentBlink>JavaScript>WebAssembly <https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3EJavaScript%3EWebAssembly%22> Search tagsstack switching <https://chromestatus.com/features#tags:stack%20switching>, Promise <https://chromestatus.com/features#tags:Promise>, JSPI <https://chromestatus.com/features#tags:JSPI> TAG reviewhttps://github.com/w3ctag/design-reviews/issues/809 Review was declined, deferring to W3C WebAssembly CG TAG review statusPending Origin Trial NameWebAssembly JavaScript Promise Integration Chromium Trial NameWebAssemblyJSPromiseIntegration Origin Trial documentation link https://github.com/WebAssembly/js-promise-integration WebFeature UseCounter namekV8WasmJavaScriptPromiseIntegration Risks Interoperability and Compatibility This spec is backed by a standardization effort. We do not plan to ship the JSPI until it has been standardized by the W3C Wasm WG. However, post standardization, we will depend on all browsers implementing the standard. *Gecko*: Positive (https://bugzilla.mozilla.org/show_bug.cgi?id=1850627) Mozilla have an experimental imlementation available in the nightly build *WebKit*: No signal *Web developers*: No signals *Other signals*: Activation Making use of JSPI requires some changes by WebAssembly-based developers (no impact on JavaScript developers). Depending on their toolchain usage a developer will need to modify their code. For Emscripten users, this is likely to be minimal as support for JSPI exists in Emscripten. Security 1. Control flow integrity. 2. Ensuring that JavaScript programs cannot suspend via JSPI. WebView application risks Does this intent deprecate or change behavior of existing APIs, such that it has potentially high risk for Android WebView-based applications? Goals for experimentation Reason this experiment is being extended JSPI is part of a standards track effort. We are currently in 'stage 3' of a five stage process. The next stage (4) is when a specification is deemed final. There have been one or two small changes to the API which have prevented moving to phase 4. The text of the specification is much closer to being final than in previous rounds of the origin trial. However, we would like some time to further bake the revised API. We anticipate being able to fully ship JSPI before the end of 2025Q2. Ongoing technical constraints None. Debuggability Developers can piggyback on existing DevTools support for Promises to help with debugging JSPI applications. In particular the existing mechanisms for constructing extended stack traces from so-called Promise chains will also include stack traces from JSPI applications. Will this feature be supported on all six Blink platforms (Windows, Mac, Linux, ChromeOS, Android, and Android WebView)?Yes Is this feature fully tested by web-platform-tests <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md> ? Yes Flag name on about://flagsenable-experimental-webassembly-jspi Finch feature nameNone Non-finch justificationNone Requires code in //chrome?False Tracking bug https://bugs.chromium.org/p/v8/issues/detail?id=12191&q=owner%3Ame&can=2 Estimated milestones Origin trial desktop first 123 Origin trial desktop last 131 Origin trial extension 1 end milestone 131 Origin trial extension 2 end milestone 133 Origin trial extension 3 end milestone 136 DevTrial on desktop 109 Origin trial Android first 123 Origin trial Android last 131 Origin trial WebView first 123 Origin trial WebView last 131 Link to entry on the Chrome Platform Status https://chromestatus.com/feature/5674874568704000?gate=5136083140214784 Links to previous Intent discussionsIntent to Prototype: https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAAdKk6BGFseZ6pBO2qEW_xeovVw1_guVq26rcNM1nWY442Y5Ng%40mail.gmail.com Intent to Experiment: https://groups.google.com/a/chromium.org/g/blink-dev/c/Fu79zrp7MoE Intent to Extend Experiment 1: https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CALi9WK-JJNTYSeNdSuai827Qg5%3D2vZo-emYP2z-5vJOfE%2B8Nng%40mail.gmail.com Intent to Extend Experiment 2: https://groups.google.com/a/chromium.org/d/msgid/blink-dev/67103777.2b0a0220.137ef7.0e4c.GAE%40google.com This intent message was generated by Chrome Platform Status <https://chromestatus.com/>. -- You received this message because you are subscribed to the Google Groups "blink-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to blink-dev+unsubscr...@chromium.org. To view this discussion visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAE65UWDsoPqTePz3S42YsV2_Wr3OGL6yY2YdsS6oOYw3Rh8%2Bww%40mail.gmail.com.
