/**
 * Paint an element's text run onto a canvas with the DOM's own font and
 * metrics, so canvas glyphs land on the DOM glyphs to within a device px.
 * Shared by the Pro badge's metal fill and the text reflection mask.
 *
 * `ctx` is expected in device px with origin at `root`'s top-left; the
 * function scales by `dpr` internally.
 */
export declare function paintTextRun(ctx: CanvasRenderingContext2D, root: HTMLElement, textEl: HTMLElement, dpr: number): void;
/** Render `textEl`'s glyphs white-on-transparent over `root`'s box → data URL. */
export declare function textMaskDataUrl(root: HTMLElement, textEl: HTMLElement): string | null;