/**
 * Shared error-boundary helper. Docs `<molplot-chart>` and imperative chart
 * classes both render asynchronously; a rejected promise with no listener is
 * an empty host and no console line. Always go through here.
 */
export declare function reportMolplotError(scope: string, cause: unknown, extra?: unknown): Error;
/** Fire-and-forget a render so a rejection is logged instead of swallowed. */
export declare function trackRender(scope: string, run: Promise<void>): void;