Contact emailstliv...@google.com, ecmzieg...@chromium.org, jkumme...@chromium.org
Explainer https://github.com/WebAssembly/custom-descriptors/blob/main/proposals/custom-rtts/Overview.md <https://github.com/WebAssembly/custom-rtts/blob/main/proposals/custom-rtts/Overview.md> Specification https://github.com/WebAssembly/custom-descriptors/blob/main/proposals/custom-descriptors/Overview.md Summary Allows WebAssembly to store data associated with source-level types more efficiently in new "custom descriptor" objects. These custom descriptors can be configured with prototypes for the WebAssembly objects of that source-level type. This allows methods to be installed on a WebAssembly object's prototype chain and called directly from JS using normal method call syntax. The prototypes and methods can be configured declaratively using an imported builtin function. Blink componentBlink>JavaScript>WebAssembly <https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3EJavaScript%3EWebAssembly%22> TAG reviewNone TAG review statusPending Origin Trial documentation link https://github.com/WebAssembly/custom-descriptors/blob/main/proposals/custom-descriptors/Overview.md Risks Interoperability and Compatibility None *Gecko*: No signal *WebKit*: No signal *Web developers*: No signals *Other signals*: 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? None Goals for experimentation Initially we are looking to measure real-world performance, heap usage, and OOM rate impact of just the core Wasm part of the proposal. We want to verify that heap usage and OOM rates will decrease as expected and that the performance impact is negligible. If we do measure a performance impact, that will inform additional optimization work we would need to do in the implementation. Notably, the JS interop features of the proposal are out of scope for this initial experimentation. They will likely be evaluated in follow-on experiments. Ongoing technical constraints None. Debuggability None Will this feature be supported on all six Blink platforms (Windows, Mac, Linux, ChromeOS, Android, and Android WebView)?No Is this feature fully tested by web-platform-tests <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md> ?No Flag name on about://flagsNone Finch feature nameNone Non-finch justificationNone Requires code in //chrome?False Estimated milestones Origin trial desktop first 141 Origin trial desktop last 147 Link to entry on the Chrome Platform Status https://chromestatus.com/feature/6024844719947776?gate=5062088692858880 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/CAJZD_EWidxA-LogDRBnDVM9cOMbu3OX3_3onqCZcSLVJm7%3DnvA%40mail.gmail.com.
