export declare class JSONContainer<T> {
    /**
     * file path
     */
    readonly path: string;
    protected __raw: T;
    constructor(json: T, filepath: string);
    get rawJSON(): T;
    /**
     * Generic way to get data in {@link __raw}
     * @param key
     * @param defaultValue
     * @returns
     */
    getKey<K extends keyof T>(key: K, defaultValue?: T[K]): T[K] | undefined;
    /**
     * Generic way to update the value in current jsons.
     * @param key
     * @param value
     * @param write whether write back to file
     */
    update<K extends keyof T>(key: K, value: T[K], write?: boolean): Promise<void>;
}