Function jsonToOpenUI

packages/lang-core/src/parser/serialize.ts:247–279

(
  json: ElementNode,
  library: Library,
  options?: SerializeOptions,
)

 * @returns openui-lang source text (multiple statements joined by newlines)
 */
export function jsonToOpenUI(
  json: ElementNode,
  library: Library,
  options?: SerializeOptions,
): string {
  const paramMap = compileSchema(library.toJSONSchema());
  const collector = new StatementCollector();

  // Serialize root — this recursively registers all child statements
  const rootExpr = serializeElementExpr(json, paramMap, collector);
  const rootId = json.statementId || "root";

  // Build output: root first, then children (depth-first post-order), then state
  const lines: string[] = [];

  // Root statement
  lines.push(`${rootId} = ${rootExpr}`);

  // Child statements (already in depth-first post-order from collector)
  for (const stmt of collector.getStatements()) {
    // Skip root if it was also registered in collector
    if (stmt.id === rootId) continue;
    lines.push(stmt.text);
  }

  // State declarations
  if (options?.stateDeclarations) {
    const stateLines = serializeStateDeclarations(options.stateDeclarations, paramMap, collector);
    lines.push(...stateLines);
  }

  return lines.join("\n");
}