Module behavior 

Keyboard and focus behaviour shared by several components. Pure decisions are plain functions with unit tests; the hooks around them only read and write signals.

Modules

context

The context strip’s state, ported from upstream’s context-strip.ts.

date

Calendar arithmetic for the date picker, ported from upstream’s datepicker.ts.

roving

Roving focus: one tab stop for a set of items, arrows to move within it.

sort

Table sorting, ported from upstream’s table.ts.

splitter

Window splitter arithmetic, ported from upstream’s splitter.ts: clamping and rounding, what each key does, and how far a drag moves the bar.

url

Which addresses an embedded frame may load: a port of isSafeFrameUrl in upstream’s webview.ts.