.at() compat issue

Shu-yu Guo, Google for

Tab Atkins, Google

Shipping status

• Chrome 89, then unshipped
• Firefox 85
• Safari Tech Preview 118, then unshipped

Compat issue with bricklink.com

https://github.com/tc39/proposal-relative-indexing-method/issues/41

• A utility function uses Arrays as hash tables, and one of the keys was named "at"
• I've filed a bug with Bricklink, awaiting response
• Bug is in application code, not a library
• Hopeful we can still ship after Bricklink updates

:/

Reviewers:

• Richard Gibson
• Keith Miller
• Leo Balter

Editors:

• Michael Ficarra
• Kevin Gibbons
• Jordan Harband