export declare class BuildCache {
    private static queue;
    private static enqueue;
    static get<T = unknown>(key: string): Promise<T | null>;
    static getWithDefault<T = unknown>(key: string, defaultValue: (() => T) | T): Promise<T>;
    static getWithSetDefault<T>(key: string, defaultValue: (() => T) | T): Promise<T>;
    static set(key: string, value: unknown): Promise<void>;
}