import { type PromptRegistryManifest, type RegistryDiff } from '../types/prompt-registry.js';
/**
 * Fetch a JSON document. Injectable so the installer is testable without
 * network access. Defaults to the global `fetch`.
 */
export type JsonFetcher = (url: string) => Promise<unknown>;
export interface PromptPullResult {
    manifest: PromptRegistryManifest;
    diff: RegistryDiff;
    /** Always true for the stub — pull never writes anything yet. */
    dryRun: true;
}
export interface PromptInstallerOptions {
    fetcher?: JsonFetcher | undefined;
}
/**
 * PromptInstaller — registry sync GROUNDWORK (stub).
 *
 * `pull()` fetches and validates a remote manifest and computes the checksum
 * diff against the prompts the caller already has — but writes NOTHING. The
 * actual download/write is the documented extension point (`install`), left
 * unimplemented so the sync surface can land incrementally and be reviewed
 * before it can touch the user's prompt store.
 *
 * Mirrors `SkillInstaller`. For a GitHub-backed hub, the contract is a repo
 * with a top-level `registry.json` (a `PromptRegistryManifest`) plus
 * `prompts/<slug>.json` bodies — the same shape the bundled dataset emits.
 */
export declare class PromptInstaller {
    private readonly fetcher;
    constructor(opts?: PromptInstallerOptions);
    /**
     * Fetch + validate a manifest and report what a sync WOULD change. Read-only.
     * @param manifestUrl URL to the registry's `registry.json`.
     * @param local       The prompts the caller already has (slug + checksum).
     */
    pull(manifestUrl: string, local: {
        slug: string;
        checksum?: string | undefined;
    }[]): Promise<PromptPullResult>;
    /**
     * EXTENSION POINT (not yet wired): download the prompt bodies for the given
     * registry refs and write them into the user layer as `source:'synced'`,
     * recording each in the installed-prompts manifest. Intentionally unimplemented
     * — pulling real content over the network is gated behind a future change so
     * the format/diff path can ship and be reviewed first.
     */
    install(): Promise<never>;
}
//# sourceMappingURL=prompt-installer.d.ts.map