import { MilkdownPlugin } from '@milkdown/kit/ctx';
/**
 * Replace Crepe's `image-block` node spec with Platform width/height support.
 *
 * Why not `extendSchema()` / prepare-time `ctx.set` alone:
 * - `extendSchema()` registers a second `$node('image-block')`; load uses `Promise.all` → race.
 * - Prepare-time factory patch can lose if `$node` already snapshotted, or if slice identity differs.
 *
 * Instead we gate Schema on {@link PlatformImageBlockSchemaReady}, wait until Crepe registers
 * `image-block` in `nodesCtx`, then overwrite that entry before Schema builds.
 */
export declare const platformImageBlockSchema: MilkdownPlugin;