/**
 * Constants for state key prefixes
 */
export declare class StatePrefix {
    static readonly APP_PREFIX = "app:";
    static readonly USER_PREFIX = "user:";
    static readonly TEMP_PREFIX = "temp:";
}
/**
 * A class for managing session state.
 * This is a dictionary-like object with methods similar to the Python version.
 */
export declare class State {
    [key: string]: any;
    /**
     * Creates a new state.
     *
     * @param initialState Initial state values
     */
    constructor(initialState?: Record<string, any>);
    /**
     * Gets a value from the state.
     * Similar to Python's dictionary get method.
     *
     * @param key The key of the value
     * @returns The value, or undefined if not found
     */
    get(key: string): any;
    /**
     * Sets a value in the state.
     *
     * @param key The key of the value
     * @param value The value to set
     */
    set(key: string, value: any): void;
    /**
     * Checks if the state has a value for the key.
     *
     * @param key The key to check
     * @returns True if the state has a value for the key, false otherwise
     */
    has(key: string): boolean;
    /**
     * Deletes a value from the state.
     *
     * @param key The key of the value to delete
     * @returns True if the value was deleted, false otherwise
     */
    delete(key: string): boolean;
    /**
     * Gets all the state as a record.
     *
     * @returns The state as a record
     */
    getAll(): Record<string, any>;
    /**
     * Update state with new key-value pairs.
     * Similar to Python's dictionary update method.
     *
     * @param data The data to update
     */
    update(data: Record<string, any>): void;
    /**
     * Custom implementation for JSON serialization
     */
    toJSON(): Record<string, any>;
}