Multi-format Serialization

/**
 * AST plugin for Slate fragment handling
 */
const AstPlugin: SlatePlugin;

/**
 * Serialize nodes to AST fragment format
 * @param editor - Editor instance
 * @param nodes - Nodes to serialize
 * @returns AST fragment string
 */
function serializeAst(
  editor: SlateEditor,
  nodes: any[]
): string;

/**
 * Deserialize AST fragment to nodes
 * @param editor - Editor instance
 * @param fragment - AST fragment string
 * @returns Array of deserialized nodes
 */
function deserializeAst(
  editor: SlateEditor,
  fragment: string
): any[];

import { createSlateEditor, AstPlugin, serializeAst, deserializeAst } from "@platejs/core";

const editor = createSlateEditor({
  plugins: [AstPlugin]
});

// Serialize current selection to AST
const selectedNodes = editor.getFragment();
const astFragment = serializeAst(editor, selectedNodes);

// Store fragment for later use
localStorage.setItem('clipboard', astFragment);

// Restore from AST fragment
const storedFragment = localStorage.getItem('clipboard');
const nodes = deserializeAst(editor, storedFragment);
editor.insertFragment(nodes);

/**
 * Parser plugin for custom format handling
 */
const ParserPlugin: SlatePlugin;

/**
 * Parser configuration interface
 */
interface ParserOptions {
  /** Format identifier */
  format: string;
  /** MIME type for format */
  mimeType: string;
  /** Deserialization function */
  deserialize: (data: string) => any[];
  /** Serialization function */
  serialize?: (nodes: any[]) => string;
  /** Format priority */
  priority?: number;
}

/**
 * Register a custom parser
 * @param options - Parser configuration
 */
function registerParser(options: ParserOptions): void;

/**
 * Get registered parser by format
 * @param format - Format identifier
 * @returns Parser configuration
 */
function getParser(format: string): ParserOptions | null;

/**
 * Parse data using registered parsers
 * @param editor - Editor instance
 * @param data - Data to parse
 * @param format - Format hint
 * @returns Parsed nodes
 */
function parseData(
  editor: SlateEditor,
  data: string,
  format?: string
): any[];

import { registerParser, parseData } from "@platejs/core";

// Register custom Markdown parser
registerParser({
  format: 'markdown',
  mimeType: 'text/markdown',
  deserialize: (markdown: string) => {
    // Custom markdown parsing logic
    return parseMarkdownToSlate(markdown);
  },
  serialize: (nodes: any[]) => {
    // Custom Slate to markdown conversion
    return convertSlateToMarkdown(nodes);
  }
});

// Register CSV parser
registerParser({
  format: 'csv',
  mimeType: 'text/csv',
  deserialize: (csv: string) => {
    const rows = csv.split('\n').map(row => row.split(','));
    return [{
      type: 'table',
      children: rows.map(row => ({
        type: 'tr',
        children: row.map(cell => ({
          type: 'td',
          children: [{ text: cell }]
        }))
      }))
    }];
  }
});

// Use parsers
const markdownData = "# Heading\n\nParagraph with **bold** text.";
const nodes = parseData(editor, markdownData, 'markdown');
editor.insertFragment(nodes);

/**
 * Clipboard data interface
 */
interface ClipboardData {
  /** Plain text representation */
  text: string;
  /** HTML representation */
  html?: string;
  /** AST fragment */
  fragment?: string;
  /** Custom format data */
  [format: string]: string;
}

/**
 * Write data to clipboard with multiple formats
 * @param editor - Editor instance
 * @param data - Data to write
 */
function writeClipboard(
  editor: SlateEditor,
  data: ClipboardData
): Promise<void>;

/**
 * Read data from clipboard with format detection
 * @param editor - Editor instance
 * @returns Clipboard data with detected formats
 */
function readClipboard(
  editor: SlateEditor
): Promise<ClipboardData>;

/**
 * Drag data interface
 */
interface DragData {
  /** Data transfer object */
  dataTransfer: DataTransfer;
  /** Supported formats */
  formats: string[];
  /** Drag source information */
  source?: {
    editor: SlateEditor;
    nodes: any[];
  };
}

/**
 * Handle drop event with format detection
 * @param editor - Editor instance
 * @param event - Drop event
 * @returns Processing result
 */
function handleDrop(
  editor: SlateEditor,
  event: DragEvent
): Promise<boolean>;

/**
 * Prepare drag data with multiple formats
 * @param editor - Editor instance
 * @param nodes - Nodes to drag
 * @returns Prepared drag data
 */
function prepareDragData(
  editor: SlateEditor,
  nodes: any[]
): DragData;

/**
 * Detect data format from content
 * @param data - Data to analyze
 * @param mimeType - Optional MIME type hint
 * @returns Detected format or null
 */
function detectFormat(
  data: string,
  mimeType?: string
): string | null;

/**
 * Format detection rules
 */
interface FormatDetectionRule {
  /** Format identifier */
  format: string;
  /** Detection function */
  detect: (data: string, mimeType?: string) => boolean;
  /** Detection priority */
  priority: number;
}

/**
 * Register format detection rule
 * @param rule - Detection rule
 */
function registerFormatDetection(rule: FormatDetectionRule): void;

/**
 * Export editor content to specified format
 * @param editor - Editor instance
 * @param format - Target format
 * @param options - Export options
 * @returns Exported data
 */
function exportContent(
  editor: SlateEditor,
  format: string,
  options?: {
    nodes?: any[];
    pretty?: boolean;
    metadata?: Record<string, any>;
  }
): string;

/**
 * Import content from specified format
 * @param editor - Editor instance
 * @param data - Data to import
 * @param format - Source format
 * @param options - Import options
 * @returns Imported nodes
 */
function importContent(
  editor: SlateEditor,
  data: string,
  format: string,
  options?: {
    replace?: boolean;
    position?: number[];
    normalize?: boolean;
  }
): any[];

import { exportContent, importContent, detectFormat } from "@platejs/core";

// Export to different formats
const htmlExport = exportContent(editor, 'html', { pretty: true });
const markdownExport = exportContent(editor, 'markdown');
const astExport = exportContent(editor, 'ast');

// Import with format detection
const unknownData = `# Title\n\nSome content...`;
const detectedFormat = detectFormat(unknownData);
if (detectedFormat) {
  const importedNodes = importContent(editor, unknownData, detectedFormat);
  editor.insertFragment(importedNodes);
}

// Batch export for multiple formats
const exports = {
  html: exportContent(editor, 'html'),
  markdown: exportContent(editor, 'markdown'),
  plain: exportContent(editor, 'text')
};

/** Built-in formats */
const SUPPORTED_FORMATS = {
  HTML: 'html',
  AST: 'ast',
  TEXT: 'text',
  JSON: 'json'
} as const;

/** Format MIME types */
const FORMAT_MIME_TYPES = {
  'html': 'text/html',
  'ast': 'application/x-slate-fragment',
  'text': 'text/plain',
  'json': 'application/json'
} as const;