/**
 * Reactive state store for the prefab renderer.
 *
 * Stores key-value pairs and notifies subscribers when values change.
 * Supports dot-path access (e.g. "user.name") and array operations.
 */
export type Subscriber = () => void;
export type Unsubscribe = () => void;
export declare class Store {
    private data;
    private subscribers;
    private globalSubscribers;
    /**
     * Monotonically increasing counter, bumped on every state mutation.
     * Used by the find-filter cache to detect staleness.
     */
    generation: number;
    constructor(initial?: Record<string, unknown>);
    /** Get a value by dot-path key */
    get(path: string): unknown;
    /** Get the full state snapshot */
    getAll(): Record<string, unknown>;
    /** Set a value by dot-path key and notify subscribers */
    set(path: string, value: unknown): void;
    /** Toggle a boolean value */
    toggle(path: string): void;
    /** Append a value to an array at path */
    append(path: string, value: unknown, index?: number): void;
    /** Remove an element from an array at path by index or value */
    pop(path: string, indexOrValue: number | string): void;
    /** Merge a partial state object */
    merge(partial: Record<string, unknown>): void;
    /** Subscribe to changes on a specific path */
    subscribe(path: string, fn: Subscriber): Unsubscribe;
    /** Subscribe to any state change */
    subscribeAll(fn: Subscriber): Unsubscribe;
    private notify;
}
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