export declare function getFileExtension(filePath: string): string;
export declare function capitalizeFirstLetter(str: string): string;
export declare class RetryHandler {
    static retry<T>(fn: (retries: number) => Promise<T>): Promise<T>;
}
export declare function delay(ms: number): Promise<void>;
interface FactoryFunc<TResult> {
    (): TResult;
}
export declare class Lazy<T> {
    private readonly factoryFunc;
    factoryOutput: T | undefined;
    constructor(factoryFunc: FactoryFunc<Promise<T>>);
    getValue(): Promise<T>;
}
export {};
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