import type { DemandProfile, SourceDefinition } from "../../types.js";
import type { HarvestedReferenceItem } from "./reference-harvesters.js";
/**
 * Harvests a bounded Open VSX search page into VS Code-compatible extension
 * candidates. This is a registry API, not a documentation scrape.
 */
export declare function harvestOpenVsxExtensions(source: SourceDefinition, demandProfile: DemandProfile | null): Promise<HarvestedReferenceItem[]>;
declare function resolveOpenVsxEndpoint(source: SourceDefinition): string;
declare function buildOpenVsxQuery(demandProfile: DemandProfile | null): string;
declare function readExtensionRecords(value: unknown): Record<string, unknown>[];
declare function isRecord(value: unknown): value is Record<string, unknown>;
declare function readString(value: unknown): string | undefined;
declare function readFiniteNumber(value: unknown): number | undefined;
declare function readPublisherVerification(record: Record<string, unknown>): boolean;
declare function tokenize(value: string): string[];
declare function uniqueStrings(values: string[]): string[];
/** Exposes Open VSX parsing helpers for focused tests. */
export declare const openVsxHarvesterInternals: {
    readonly buildOpenVsxQuery: typeof buildOpenVsxQuery;
    readonly isRecord: typeof isRecord;
    readonly readExtensionRecords: typeof readExtensionRecords;
    readonly readFiniteNumber: typeof readFiniteNumber;
    readonly readPublisherVerification: typeof readPublisherVerification;
    readonly readString: typeof readString;
    readonly resolveOpenVsxEndpoint: typeof resolveOpenVsxEndpoint;
    readonly tokenize: typeof tokenize;
    readonly uniqueStrings: typeof uniqueStrings;
};
export {};