an simple example script for generating presigned url with aws-sdk v3

generate-presigned-url-with-aws-sdk-v3.js

// system imports
// 3rd party imports
const { getSignedUrl } = require('@aws-sdk/s3-request-presigner')
const { S3Client, GetObjectCommand } = require('@aws-sdk/client-s3')
// local imports

const client = new S3Client({
  region: 'eu-west-1', // region, since s3 is global, guess it doesn't really matter :)
  credentials: { // this credential should have read access to the bucket/object you want to grant temp access to the user
    accessKeyId: 'AKIAIOSFODNN7EXAMPLE',
    secretAccessKey: 'wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY',
  }
});

const command = new GetObjectCommand({
  Bucket: 'bucket-name',
  Key: 'path/to/your/private/object-file.zip',
});

const main = async () => {
  const url = await getSignedUrl(client, command, { expiresIn: 60 });

  console.log(url);
}

main();