Context Navigation

Changes between Initial Version and Version 1 of Ticket #52941, comment 5

initial	v1
3	3	Do note that `core-js` is extremely conservative in which polyfills to include, however, with tiny browser implementation bugs that anyone rarely cares about leading to an inclusion of the full polyfill for that feature.
4	4
5		As a reference, with `last 2 chrome versions` this setup produces a 9.7KB bundle (not gzipped), whereas with `last 2 safari versions` that bumps up to 54KB (not gzipped), which is the same value as for the current set of supported browsers minus IE 11.
	5	As a reference, with `last 2 chrome versions` this setup produces a 9.7KB bundle (not gzipped), whereas with `last 2 safari versions` that bumps up to 54KB (not gzipped), which is the same value as for the current set of supported browsers minus IE 11 (i.e., Safari becomes the new bottleneck following the dropping of IE 11).
6	6
7	7	It may be worth diving a bit deeper and configuring the level of aggressiveness to something saner: https://github.com/zloirock/core-js#configurable-level-of-aggressiveness