/**
 * View of an object's x-* spec-extension fields. Values are `unknown` because
 * extension payloads are arbitrary JSON, validated at runtime by the extension
 * component that renders them. Spec object types declare no x-* keys (and no
 * index signature), so they can't assign to this directly; extension readers
 * accept `object` and narrow through `getExtension` / the key scan instead of
 * making every caller cast.
 */
export type ExtensionSource = {
    [key: `x-${string}`]: unknown;
};
/** Reads one x-* field off any spec object, e.g. `getExtension(info, "x-logo")`. */
export declare const getExtension: (source: object | undefined, key: `x-${string}`) => unknown;
interface RenderExtensionsProps {
    /** The object to scan for x-* fields, e.g. the `info` object. */
    source: object | undefined;
    /** Prefix for each matched extension's `path` prop, e.g. "info". */
    pathPrefix: string;
}
/**
 * Scans `source`'s own keys for x-* spec-extension fields the `x-tensions`
 * catalog knows how to render, and lazily loads + renders each match (via
 * `React.lazy`, so an extension's code is only fetched when its key actually
 * appears in a document). Unmatched x-* keys, and the library's own internal
 * bookkeeping markers (`x-parser-*`, `x-lib-*`), render nothing.
 */
export declare function RenderExtensions({ source, pathPrefix }: RenderExtensionsProps): import("react").JSX.Element | null;
export default RenderExtensions;