import type { ExtensionKey, ExtensionManifest, ExtensionType } from './types/extension-manifest';
import type { ExtensionProvider } from './types/extension-provider';
type CombineExtensionProvidersOptions = {
    resolveExtension?: (type: ExtensionType, key: ExtensionKey) => Promise<ExtensionManifest | undefined>;
    resolvePreloadedExtension?: (type: ExtensionType, key: ExtensionKey) => ExtensionManifest | undefined;
};
export default _default;
/**
 * Allow to run methods from the `ExtensionProvider` interface across all providers seamlessly.
 * This handles optional explicit resolution, promise racing, and safely discarded rejections.
 */
declare function _default(extensionProviders: (ExtensionProvider | Promise<ExtensionProvider>)[], { resolveExtension, resolvePreloadedExtension }?: CombineExtensionProvidersOptions): ExtensionProvider;