export{composedParentElement,isAccessibilityExcluded,isAccessibilitySubtreeExcluded,isAccessibilityVisible,isAccessibilityVisibilityHidden,}from'./accessibility-visibility.js';
/** Finds the highest same-origin window without discarding a parent reached before a boundary. */
export declare function highestReachableWindow(start:Window):Window;
/** Monotonic unique id, scoped by a short label (e.g. `nextId('listbox')`). */
export declare const nextId:(scope:string)=>string;
/** Returns the host's authored `aria-label`, including a public programmatic `accessibleLabel`
* binding. Attribute presence wins and preserves the empty string. A non-empty own or Lit-reactive
* compatibility property is the fallback; private computed getters are deliberately not invoked.
* `null` means neither path supplies a name and the caller may compute one. */
export declare function hostAriaLabel(host:Element):string|null;
/** Whether `nodes` contains an element node, or a text node with non-
*  whitespace content -- i.e. whether a default slot should be treated as
*  carrying "real" content rather than being effectively empty. */
export declare function hasRealContent(nodes:Iterable<Node>):boolean;
/**
* Resolves the node that actually receives focus when a consumer-supplied trigger is activated.
*
* A name/description relationship is only surfaced to assistive technology on the element the user
* is focused on. A custom-element host is almost never that element: `<lr-select>`, `<lr-switch>`,
* `<lr-chip>` and any consumer-authored wrapper all move focus to a native control inside their
* shadow root, so a description parked on the host is silently dropped. Walk to the first
* programmatically focusable descendant instead, including a managed native stop after a roving
* owner assigns `tabindex=-1`.
*
* Returns `trigger` itself when the trigger is its own focus target (any native control), when it
* carries its own `tabindex`, and when nothing focusable is reachable yet (a custom element that
* has not upgraded, or a disabled control) -- callers then behave exactly as they did before.
*/
export declare function resolveAccessibleTrigger(trigger:HTMLElement):HTMLElement;
/** Visually-hidden-but-screen-reader-available helper class.
*
* The hairline box is sized from the shared --lr-size-1px token and the logical
* inline-size/block-size/margin-inline/margin-block properties rather than raw 1px literals and
* physical width/height/margin, matching every component stylesheet in the library -- this module
* is shared by dozens of components, so an untokenized copy here would exempt all of them at once
* from the token scale -- and no automated gate would notice, since check-style-policy.mjs only
* walks component-level `.styles.ts` files and never this directory.
*
* Clipping uses `clip-path: inset(50%)`, not the deprecated `clip: rect(0 0 0 0)` shorthand --
* matching `styles/utilities.css`'s `.lr-visually-hidden` and every component stylesheet that
* ships its own copy. Two consequences worth knowing: a consumer that reveals a `.sr-only`
* element on focus resets `clip-path: none` rather than `clip: auto`, and `clip-path` (unlike
* `clip`) establishes a containing block for absolutely-positioned descendants. */
export declare const srOnly:import("lit").CSSResult;