Summary

Reduced the JavaScript bundle size. By optimizing the implementation of core component code, overall JavaScript sizes are reduced.

Breaking change

This is not a breaking change.

Related pull requests

Split from #5793, to simplify review.

Preview link

N/A

Problem statement

See #5793

Solution

Replace use of receptor/once with addEventListener's once option (see documentation).

The intended purpose is the same.

receptor.once:

Returns a wrapped function that removes itself as an event listener as soon as it's called, then calls the callback function with the same arugments.

addEventListener once

A boolean value indicating that the listener should be invoked at most once after being added. If true, the listener would be automatically removed when invoked.

Testing and review

Verify that skipnav removes tabindex from body after activating and then moving focus away from the body.

Verify that in-page navigation removes tabindex from the target heading after activating and then moving focus away from the heading.