In JavaScript SDK v3, we added an implementation of WHATWG AbortController interface in @aws-sdk/abort-controller. To use it, you need to send AbortController.signal as abortSignal in the httpOptions ...

I've created an equivalent of aws-sdk-mock for the v3 SDK: aws-sdk-client-mock Similarly to this great lib, does not depend on Jest or any other unit testing framework and uses Sinon.js under the hood ...

AWS is shaking up that model by releasing a JavaScript SDK that securely accesses AWS services from the browser, thus eliminating in some cases the need for any server-side code.

The SDK supports Amazon’s web identity federation feature (you wouldn’t want to add your AWS credentials in your HTML and JavaScript, after all).