import { type PortableState } from "../ts-mode/portable-state.ts";
/** JS-only selected data and reset-survival pins. */
export declare class JsDataStorage {
    readonly projectKey: string;
    private readonly project;
    private readonly profiles;
    private readonly maxBytes;
    constructor(agentDir: string, cwd: string, maxBytes: number);
    readProfile(name: string): Promise<PortableState | undefined>;
    writeProfile(name: string, state: PortableState): Promise<void>;
    readProject(): Promise<PortableState>;
    /** Caller holds the whole-notebook lease; pin data is reset-survival state, not a second fork. */
    writeProject(candidate: PortableState): Promise<void>;
    private profile;
    private read;
    private write;
}