Mi pregunta es sobre el error:

 Uncaught ReferenceError: require is not defined

Código:

 const AWS = require('aws-sdk') const s3 = new AWS.S3() AWS.config.update({accessKeyId: 'key id', secretAccessKey: 'access key'}) const myBucket = 'bucket name' const myKey = 'key path' const signedUrlExpireSeconds = 60 * 5 // your expiry time in seconds. const url = s3.getSignedUrl('getObject', { Bucket: myBucket, Key: myKey, Expires: signedUrlExpireSeconds