Contact emails Spec Summary Until now,
String.prototype.{trimLeft,trimRight} were non-standard language
extensions, required for Web compatibility. The Stage 3 proposal at standardizes this
functionality as String.prototype.{trimStart,trimEnd}, and defines
String.prototype.{trimLeft,trimRight} as aliases for backwards
compatibility. Vendor signals Firefox: Public support Edge: Public support
Safari: In development Web developers: Positive Compatibility risk
There could be a compatibility risk, but that seems unlikely. We won’t know
for sure until we try shipping it. Ongoing technical constraints
None Will this feature be supported on all six Blink platforms (Windows,
Mac, Linux, Chrome OS, Android, and Android WebView)?
Tracking bug Link to entry on the
Chrome Platform Status Requesting approval
to ship? Yes

Note that since this is a V8/JS feature, this post is just an FYI to
blink-dev — no signoff from Blink API owners is required.

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