This is a request for the WebKit position on the TC39 relative indexing method proposal, which has been at Stage 3 since September 2020. It was initially named `.item`, but due to web incompatibility with the YUI library and Flickr, it was renamed in November 2020 to `.at`, pending further web incompatibility data.

Chrome would like to ship ASAP to gather said incompatibility data.

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

- Specification: https://tc39.es/proposal-relative-indexing-method/

- ChromeStatus: https://chromestatus.com/feature/6123640410079232

Cheers,

Shu-yu Guo, V8