import type { ReactionExpression, ReactionLibrary, ReactionRequest } from '../reaction-contract.js';
type Transport = (input: ReactionRequest, signal?: AbortSignal) => Promise<unknown>;
/** One account-scoped server snapshot. Failed/ambiguous writes retain their request identity. */
export declare class ReactionLibraryStore {
    private readonly transport;
    private scope;
    private controller;
    private value;
    private loading;
    private saving;
    private pending;
    private revision;
    private listeners;
    constructor(transport?: Transport);
    subscribe: (listener: () => void) => () => void;
    snapshot: () => number;
    private publish;
    setScope(scope?: string): void;
    read(scope: string): ReactionLibrary | undefined;
    retry(scope: string): Promise<ReactionLibrary>;
    load(scope: string): Promise<ReactionLibrary>;
    save(scope: string, items: ReactionExpression[]): Promise<ReactionLibrary>;
}
export declare const reactionLibrary: ReactionLibraryStore;
export {};
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