/**
 * Log a console.warn once per key. Subsequent calls with the same key are no-ops.
 * @param {string} key
 * @param {string} message
 */
export function warnOnce(key: string, message: string): void;
/**
 * Wrap an Editor instance in a Proxy that emits one-time deprecation
 * warnings when consumers access ProseMirror internals or editor commands.
 *
 * The proxy is fully transparent — all property access and method calls are
 * forwarded to the underlying editor. Only the warning side-effect is added.
 *
 * @param {import('@superdoc/super-editor').Editor} editor
 * @returns {import('@superdoc/super-editor').Editor} Proxied editor (or the
 *   original if null/already wrapped)
 */
export function createDeprecatedEditorProxy(editor: import('../../../super-editor/src/index.js').Editor): import('../../../super-editor/src/index.js').Editor;
/**
 * Unwrap a potentially proxied editor back to the raw Editor instance.
 * Safe to call on an already-raw editor — returns it unchanged.
 *
 * @param {import('@superdoc/super-editor').Editor | null | undefined} editor
 * @returns {import('@superdoc/super-editor').Editor | null | undefined}
 */
export function unwrapEditor(editor: import('../../../super-editor/src/index.js').Editor | null | undefined): import('../../../super-editor/src/index.js').Editor | null | undefined;
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