This is now an "intent to ship". The feature landed in the spec, in WPT and in Gecko (targeting 66 release).
On Mon, Dec 17, 2018 at 9:12 AM Henri Sivonen <hsivo...@mozilla.com> wrote: > > # Summary > > TextEncoder.encodeInto() adds encoding JavaScript strings into UTF-8 > into caller-provided byte buffers. This is a performance optimization > for JavaScript/Wasm interop that allows the encoder output to be > written directly into Wasm memory without extra copies. > > # Details > > TextEncoder.encode() returns a DOM implementation-created buffer. This > involves coping internally in the implementation (in principle, this > copy could be optimized away with internal-only API changes) and then > yet another copy from the returned buffer into Wasm memory (optimizing > away this copy needs a Web-visible change anyway). > > TextEncoder.encodeInto() avoids both copies. > > https://bugzilla.mozilla.org/show_bug.cgi?id=1449849 combined with > TextEncoder.encodeInto() is expected to avoid yet more copying. > > The expectation is that passing strings from JS to Wasm is / is going > to be common enough to be worthwhile to optimize. > > # Bug > > https://bugzilla.mozilla.org/show_bug.cgi?id=1514664 > > # Link to standard > > https://github.com/whatwg/encoding/pull/166 > > # Platform coverage > > All > > # Estimated or target release > > 67 > > # Preference behind which this will be implemented > > Not planning to have a pref for this. > > # Is this feature enabled by default in sandboxed iframes? > > Yes. > > # DevTools bug > > No need for new DevTools integration. > > # Do other browser engines implement this > > No, but Chrome developers have been active in the spec discussion. > > # web-platform-tests > > https://github.com/web-platform-tests/wpt/pull/14505 > > # Is this feature restricted to secure contexts? > > No. This is a new method on an interface that predates restricting > features to secure contexts. > > -- > Henri Sivonen > hsivo...@mozilla.com -- Henri Sivonen hsivo...@mozilla.com _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
