/**
 * `<Backdrop>` — generic dimmed backdrop behind a sheet, bound to a
 * reveal SharedValue. Ported from lynx-navigation's `SheetBackdrop`
 * minus the navigator wiring (that package's wrapper adds `nav.pop()`
 * and covered-sheet statics); this one just dims and reports taps.
 *
 * It is meant to be ALWAYS PRESENT in its parent's tree (constant child
 * shape — flipping children remounts siblings), rendered `display: none`
 * while disabled/hidden so it neither dims nor intercepts taps.
 *
 * Lynx has no z-index and no portal, so stacking is document order: the
 * backdrop must be rendered immediately BEFORE the sheet panel in the
 * same positioned container, and it covers that container — a full-screen
 * dim therefore needs a full-surface positioned ancestor, with the sheet
 * (+ backdrop) as its LAST children so nothing else paints above them.
 *
 * Opacity binds the reveal SV over `[inputRange[0], inputRange[1]] →
 * [0, maxOpacity]` px, so the dim tracks the sheet position exactly —
 * proportional at partial detents, fading in lockstep during a
 * drag-to-dismiss. Without an SV it renders `staticOpacity`.
 */
import { type Define, type SharedValue } from '@sigx/lynx';
/** Default fully-open dim (matches the route sheet's backdrop). */
export declare const SHEET_BACKDROP_MAX_OPACITY = 0.4;
export type BackdropProps = 
/** Reveal SV to bind the dim to; null → render `staticOpacity`. */
Define.Prop<'revealSV', SharedValue<number> | null, true>
/** Reveal px range `[start, end]` mapped onto `[0, maxOpacity]`. */
 & Define.Prop<'inputRange', readonly [number, number], true> & Define.Prop<'maxOpacity', number, false>
/** Dim to render when no SV is bound. Default 0. */
 & Define.Prop<'staticOpacity', number, false>
/**
 * When false, render inert: `display: none` — no dim, no tap capture,
 * touches pass through to the content below. Kept in the tree so the
 * parent keeps a constant child shape.
 */
 & Define.Prop<'enabled', boolean, true>
/** Extra hide flag (e.g. covered-by-another-layer) — also display:none. */
 & Define.Prop<'hidden', boolean, false>
/**
 * Tap on the dim (fires on BG). The backdrop always CONSUMES the tap
 * (`catchtap` — it covers content, so a tap must never reach
 * interactive elements behind it); the caller decides whether that
 * means dismiss.
 */
 & Define.Prop<'onPress', () => void, false>
/**
 * Intrinsic tag to render the dim as, instead of `'view'` — pass
 * `TOUCH_GUARD_TAG` from `@sigx/lynx-gestures` (`'sigx-touch-guard'`)
 * so the dim's native view CONSUMES the platform touch stream and an
 * Android EditText underneath can't grab focus (#787). Arrives as a
 * plain string so this package stays pure JS (no lynx-gestures
 * dependency); the tag requires `sigx prebuild`.
 */
 & Define.Prop<'guardTag', string, false>;
export declare const Backdrop: import("@sigx/runtime-core").ComponentFactory<BackdropProps, void, {}>;
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