import type { SerializedEditorState } from 'lexical';
import { type SanitizedServerEditorConfig } from '@payloadcms/richtext-lexical';
export declare const BLOCK_PLACEHOLDER_PREFIX = "[[[BLOCK_";
export declare const BLOCK_PLACEHOLDER_SUFFIX = "]]]";
/**
 * Non-Compose text actions (Translate/Simplify/Proofread/...) only ever give the model this
 * rendered HTML as its view of the current content (via the `{{toHTML field}}` prompt
 * placeholder) - the model never sees the underlying Lexical JSON. Custom `block` nodes
 * (BlocksFeature) have no registered HTML converter, so richtext-lexical's HTML conversion
 * silently produces nothing for them: the model isn't just unable to reproduce a block, it has
 * no way of knowing one exists there at all, so it's removed the moment any such action runs.
 *
 * Substituting a plain-text marker in a block's place gives the model something it CAN
 * legally see and echo back (paired with an instruction to preserve it verbatim, see
 * `endpoints/index.ts`), which `setSafeLexicalState.ts` then uses to reinsert the real block
 * afterwards. Only top-level `root.children` blocks are covered; blocks nested inside other
 * node types are out of scope for this pass.
 */
export declare const withBlockPlaceholders: (editorData: SerializedEditorState) => SerializedEditorState;
export declare function lexicalToHTML(editorData: SerializedEditorState, editorConfig: SanitizedServerEditorConfig): Promise<string>;