[Webkit-unassigned] [Bug 215485] New: Implement transferable streams

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=215485

            Bug ID: 215485
           Summary: Implement transferable streams
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebCore Misc.
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ricea at chromium.org

Transferable streams permit streams to be transferred to a worker or other realm using postMessage(), where they can be used just like the original stream.

Example:

const rs = new ReadableStream();
window.postMessage(rs, '*', [rs]);

See the explainer https://github.com/whatwg/streams/blob/master/transferable-streams-explainer.md for more motivation.

See the spec change at https://github.com/whatwg/streams/pull/1053 and the web platform tests at https://github.com/web-platform-tests/wpt/pull/24546.

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