Version Update Notification Block for React

Edit FROM, TO, HIGHLIGHTS, BREAKING and MIGRATION (each entry has an id, a title and a text) and the facts in the first column. The count on the Migration tab, the steps to go and the button's state are worked out from how many migration steps are ticked, so adding a step adds a checkbox and a count without more code. The product, package and codemod names are made up.

A major release breaks things on purpose, so the update waits until you have said you did the work. While steps are open the button is aria-disabled but still focusable and still answers: it switches to Migration, moves focus to the first step still open and says "2 steps to go. Tick each one first." It never fails silently. Once every step is ticked it becomes active and queues the update.

Only this page changes: a polite line says the update was queued in this demo and nothing was installed. The checkboxes are state in the page, and "Release notes" only says in the status line what it would open. In your app run the update from update, and keep the checklist as your own guard or as a record of what the user confirmed.

No. An unseen copy of the three panels' text sits in the same grid cell as the live one, so the cell is as tall as the tallest and the Migration list has the same room for its checkboxes as the other lists have for plain lines. The live panel is the only one that can be reached or read.

The tabs are a labelled tab list with the arrow keys, each step is a real checkbox named by its title and described by its text, and the whole row is the hit area. A single polite line says how many steps are to go, and the lock icon on the button is decorative: the button's state is in its aria-disabled and in that line.