/**
 * OpenTUI EditBuffer always runs native `handleScroll` in `onMouseEvent`
 * *after* JSX `onMouseScroll` listeners, and it never checks `scrollSpeed`.
 * That dual-path is what made draft + chat both move when the pointer was
 * over an unfocused composer.
 *
 * Patch the instance so scroll events skip native viewport motion; our
 * composer wheel policy (focus-strict) is the only scroll path.
 *
 * Note: `onMouseEvent` is protected on TextareaRenderable — we patch via a
 * structural cast so the public API stays untyped for that field.
 */
export declare function disableNativeTextareaScroll(editor: object | null | undefined): () => void;