DOM: Implement the first()
Observable operator
#45479
Merged
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See WICG/observable#131.
For WPTs:
Co-authored-by: [email protected]
R=[email protected]
Bug: 40282760
Change-Id: I81a2b482dcfdbc149d60ddbc5b98ddadb6dafc89
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5412443
Reviewed-by: Joey Arhar <[email protected]>
Commit-Queue: Dominic Farolino <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1281639}