import type { MindContext } from "../types.js";
import type { ConceptLicence, ConnectorLicence, Site } from "../graph-search.js";
import type { PipelineMechanism } from "../pipeline-mechanism.js";
/** The concept hops the cover may take, OFFERED up front and looked up only
 *  when the search asks (see {@link Licence}): every recognised form with no
 *  continuation of its own may borrow a halo sibling's. */
export interface CoverConcepts extends ConceptLicence {
    /** Look up the asked forms' concept targets not yet granted. */
    grant(nodes: Iterable<number>): Promise<void>;
}
export declare function offerConcepts(ctx: MindContext, sites: ReadonlyArray<Site>): CoverConcepts;
/** The connectors the cover may splice, OFFERED up front and BRIDGED only when
 *  the search asks (see {@link ConnectorLicence}): every pair a learnt whole
 *  could run together — two touching sites, each side as itself or as its
 *  answer, in both orders — and, when three or more answers are recognised, the
 *  first answer to each later one (the N-ary whole). */
export interface CoverConnectors extends ConnectorLicence {
    /** Bridge the asked pairs not yet granted. */
    grant(keys: Iterable<string>): Promise<void>;
}
export declare function offerConnectors(ctx: MindContext, sites: ReadonlyArray<Site>, query?: Uint8Array): CoverConnectors;
export declare const coverMechanism: PipelineMechanism;