import { MaybeRefOrGetter } from 'vue';
/**
 * Confine a proximity reflection to an element's glyphs.
 *
 * The engine paints reflections into a wrapper it inserts inside the target
 * (`[data-metal-fx-reflection]`, canvases inset:0). For a text node that
 * would light the whole line box and stroke its rectangle. This masks the
 * wrapper with the text rendered white-on-transparent, so only the
 * letterforms catch the light. Re-rendered on resize and once fonts load.
 *
 * @param target the element whose glyphs should catch the light (element,
 * `Ref`, or getter) — typically the text span inside a `TxMetalFx`.
 */
export declare function useMetalTextReflection(target: MaybeRefOrGetter<HTMLElement | null>): void;