import type { Plugin } from 'graphql-yoga';
import { FetchError, SupergraphSchemaManager, SupergraphSchemaManagerOptions } from '@graphql-tools/federation';
export type ManagedFederationPluginOptions = ((SupergraphSchemaManagerOptions & {
    supergraphManager?: never;
}) | {
    supergraphManager: SupergraphSchemaManager;
}) & {
    /**
     * The manager to be used for fetching the schema and keeping it up to date
     * If not provided, on will be instantiated with the provided options
     */
    supergraphManager?: SupergraphSchemaManager | never;
    /**
     * Allow to customize how a schema loading failure is handled.
     * A failure happens when the manager failed to load the schema more than the provided max retries
     * count.
     * By default, an error is logged and the polling is restarted.
     * @param error The error encountered during the last fetch tentative
     * @param delayInSeconds The delay in seconds indicated by GraphOS before a new try
     */
    onFailure?: (error: FetchError | unknown, delayInSeconds: number) => void;
};
export declare function useManagedFederation(options?: ManagedFederationPluginOptions): Plugin;