import { S3Client } from '@aws-sdk/client-s3';
export declare function downloadObject({ bucket, filePath, objectKey, s3, }: {
    /**
     * S3 bucket where object is located
     */
    bucket: string;
    /**
     * Where to write downloaded file to
     */
    filePath: string;
    /**
     * Key of object in S3 bucket
     */
    objectKey: string;
    /**
     * S3 instance
     */
    s3?: S3Client;
}): Promise<boolean>;
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