export type TwinRuntime = {
    twinResources: typeof import('@volter/world-core').twinResources;
    pendingActions: typeof import('@volter/world-core').pendingActions;
    readRoot: typeof import('@volter/world-core').readRoot;
    writeRoot: typeof import('@volter/world-core').writeRoot;
    performEntries: typeof import('@volter/world-core').performEntries;
    applyGithubWrite: typeof import('@volter/twin-github').applyGithubWrite;
    syncGithubFromRemote: typeof import('@volter/twin-github').syncGithubFromRemote;
};
export declare const MISSING_TWIN_MESSAGE = "ztrack sync github requires the optional sync packages. Install them with: npm install -D @volter/world-core @volter/twin-github";
/** Injectable for tests that simulate the peers being unresolvable without actually uninstalling
 *  them (see twinRuntime.test.ts). Production code never overrides this. */
export declare let importTwinModules: () => Promise<[typeof import("@volter/world-core"), typeof import("@volter/twin-github")]>;
export declare function __setImportTwinModulesForTest(fn: typeof importTwinModules): void;
/** Load the twin runtime, memoized after the first successful call. Throws MISSING_TWIN_MESSAGE
 *  (never a raw MODULE_NOT_FOUND) when the optional peers aren't installed. */
export declare function loadTwinRuntime(): Promise<TwinRuntime>;