Get a gziped file from s3 to memory

read_gzipped_from_s3.ts

import { createGunzip } from 'node:zlib';
import { text } from 'node:stream/consumers';
import { GetObjectCommand, S3Client } from '@aws-sdk/client-s3';
 
async function readGzippedFromS3(s3Client: S3Client, bucket: string, objectKey: string): Promise<string> {
    const command = new GetObjectCommand({
        Bucket: bucket,
        Key: objectKey,
    });
    const response = await s3Client.send(command);
 
    const gunzip = createGunzip();
    const body = response.Body.pipe(gunzip);
 
    return text(body);
}