luxon a successor of moment
Luxon a successor of moment.js, moment.js is a date library from a previous era of the internet but still very popular. One of the disadvantages is that moment.js has a large size, with time zones and localization backed in.
Modern web browsers (and Node.js) expose internationalization and time zone support via the Intl object, codified as ECMA-402. Libraries like Luxon (and others) take advantage of this, reducing or removing the need to ship your own data files.
So in this video we look into luxon as a refactor path in going away from moment.js as a library. https://moment.github.io/luxon/#/moment