import type { ResolvedPreferences } from '../contracts/preferences.js';
export interface PointerLightPrefs {
    motion?: 'full' | 'calm' | 'none';
    transparency?: string;
    /** PreferenceValues['forcedColors'] (store OS signal); true disables pointer light. */
    forcedColors?: boolean;
}
/** The window whose input capability is read through the preference store's
    shared media registry (src/theme/preferences/media.ts). */
export type PointerLightWindow = Window;
/** REQ-MOT-41: active only under full motion + glass transparency +
    hover-capable fine pointer + standard|enhanced tier; [data-ag-highlights]
    present on the document disables it regardless of preferences.
    REQ-MAT-45: false under forced colours (prefs.forcedColors, or the solid
    transparency floor the document carries when prefs omit transparency). */
export declare function pointerLightActive(prefs: (Pick<ResolvedPreferences, 'motion' | 'transparency'> & {
    forcedColors?: boolean;
}) | PointerLightPrefs, tier: string, win: PointerLightWindow | null | undefined, d?: Document | null): boolean;
/** Ref-counted install: N installs keep exactly one listener pair alive. */
export declare function installPointerLight(d: Document): () => void;
//# sourceMappingURL=pointerLight.d.ts.map