DOM: Implement some(), every(), find() Observable operators
This CL implements the following Observable operators:
- some()
- every()
- find()
Their inclusion is to be consistent with Iterator helpers 1 and Async
iterator helpers 2, and is discussed in
WICG/observable#126 and to a lesser extent
WICG/observable#106.
See WICG/observable#137 for the specification.
For WPTs:
Co-authored-by: ben@benlesh.com
Bug: 40282760
Change-Id: I0fcbb9d716d6ef1727b050fd82a6fa20f53dea4b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5426595
Reviewed-by: Mason Freed masonf@chromium.org
Commit-Queue: Dominic Farolino dom@chromium.org
Cr-Commit-Position: refs/heads/main@{#1293776}