/**
* Which box a responsive breakpoint is compared against — the component's own measured allocation
* (`'container'`, a `ResizeObserver`) or the viewport (`'viewport'`, a `matchMedia` query).
*
* This types the public `orientationBreakpointBasis` property on `<lr-multi-split>` and `<lr-stepper>`
* and `<lr-multi-split>`'s `collapseBreakpointBasis`, so it must stay in the shipped `.d.ts` — unlike the
* controllers below, it carries no internal-visibility tag. `tsconfig.json` sets `stripInternal`,
* which erases any declaration whose JSDoc carries that tag; doing so here would leave public
* properties referencing a member the published types don't export, which
* `pnpm check:packed-consumer` catches as TS2305. Note the tag is matched anywhere in the comment
* block, so do not name it in prose here either.
*/
export type BreakpointBasis='container'|'viewport';
/** The collapsing pane's responsive band, widest first. Structurally identical to `<lr-multi-split>`'s
*  own `LyraMultiSplitCollapseState`, which stays declared next to the property it types — this controller
*  deliberately doesn't import from a component. */
export type CollapseBand='wide'|'rail'|'floating';