/**
 * pub.dev registry adapter for source-sync.
 *
 * Owns: resumable pub.dev package listing sync via the official
 * JSON API at https://pub.dev/api/package-names.
 *
 * Per https://pub.dev/help/api, the supported listing endpoint is
 * /api/package-names — it returns paginated package name strings
 * with a camelCase `nextUrl` cursor. The /api/packages?page=N URL
 * is not a supported public API.
 */
import type { SourceDefinition } from "../../../../types.js";
import type { SourceSyncContext, SourceSyncSourceState } from "../types.js";
/**
 * pub.dev intentionally returns HTTP 406 unless clients advertise gzip support.
 * Node's Fetch implementation transparently decodes gzip response bodies, so
 * the adapter only needs to opt into the required content negotiation header.
 */
export declare const PUB_DEV_REQUEST_HEADERS: {
    readonly "Accept-Encoding": "gzip";
};
/**
 * Syncs the pub.dev package registry using the official paginated
 * `/api/package-names` API. Each response page contains:
 *
 *   { "packages": ["name1", ...], "nextUrl": "..." }
 *
 * Packages are returned as plain names — the listing API does not
 * expose per-package metadata. Individual package details require
 * separate calls to /api/packages/<name>, which are not used here
 * to keep sync fast and bounded.
 */
export declare function syncPubDevSource(source: SourceDefinition, context: SourceSyncContext): Promise<SourceSyncSourceState>;