/**
 * The rungs a component is expected to be usable on.
 *
 * `raised` and `overlay` are deliberately absent. They are where portalled
 * things land, not where a component is authored to sit, and a component that
 * needs to be checked on them is telling you it is really an overlay.
 */
export declare const SURFACE_CONTEXT_RUNGS: readonly ["page", "primary", "widget", "surface"];