Yes, apologies. The explainer link should be the same as the specification link: https://github.com/WebAssembly/custom-descriptors/blob/main/proposals/custom-descriptors/Overview.md
On Wed, Aug 13, 2025 at 7:58 AM Daniel Bratell <bratel...@gmail.com> wrote: > The explainer link is dead, but maybe it was meant to be the same as the > Specification link? > > /Daniel > On 2025-08-12 00:50, 'Thomas Lively' via blink-dev wrote: > > Contact emails tliv...@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 component Blink>JavaScript>WebAssembly > <https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3EJavaScript%3EWebAssembly%22> > > TAG review None > > TAG review status Pending > > 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://flags None > > Finch feature name None > > Non-finch justification None > > 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 > <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAJZD_EWidxA-LogDRBnDVM9cOMbu3OX3_3onqCZcSLVJm7%3DnvA%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > > -- 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_EWSxMRrPWkeP7u%3DgjYd6j9RcFKPsjdTCccqFmwy9p30ew%40mail.gmail.com.
