Build the shippable DOM-over-canvas version of a product configurator first, then feature-detect the experimental HTML-in-Canvas path, and learn how a senior decides what the platform owns, what the product still owns, and what fails safely when a frontier API is missing.
Build an event-time component with Temporal and learn why "the same calendar day" is a different question in every time zone, and why an instant, a calendar date, and a duration are different review questions.
Popover, CSS anchor positioning, and interest invokers turn a tiny UI request into a lesson about layering, placement, triggering, semantics, and fallback design.
What the platform gives you for free in a modal dialog, what's still your call, and how to build the rest on top of <dialog> in TypeScript.
