import { DocumentNode } from "graphql";
interface ConnectionMetadata {
    forwardCountVariable?: string;
    forwardCursorVariable?: string;
    backwardCountVariable?: string;
    backwardCursorVariable?: string;
    filterVariableDefaults?: Record<string, any>;
    selectionPath: string[];
}
export interface Metadata {
    rootSelection?: string;
    mainFragment?: {
        name: string;
        typeCondition: string;
    };
    connection?: ConnectionMetadata;
}
/**
 * This transform extracts metadata needed at runtime for the `use*Fragment`
 * hooks to do their work efficiently. This includes:
 *
 * - Whether or not the observed data starts at the root of the operation or at
 *   the `node` root-field.
 * - The name and type-condition of the fragment.
 * - Connection metadata such as location of the connection inside the fragment
 *   and the names of the various connection variables.
 *
 * @param document The watch query document
 * @returns The metadata needed at runtime
 */
export declare function extractMetadataTransform(document: DocumentNode): Metadata | undefined;
export {};
//# sourceMappingURL=extractMetadataTransform.d.ts.map