When it comes to composing business logic into services, we've had our fair share of how to do, structure, organize, and call them from within our application. It's especially difficult without opinionated frameworks and the (not so great) native error handling of JavaScript. Especially when it comes to Promises. In my talk, discover how to structure services that gracefully handle errors (with type safety), how to work with promises in a predictable way and how monads can make your life easier.

About Joe: I'm a Lead Software Engineer and a huge DX enthusiast since everybody seems to only care about UX (what about us? 😢) I've started working with TypeScript around 3-4 years ago and I'm not sure whether that's a good thing or not 🙃.

In this talk, Amanda Cavallaro will demonstrate how to use the Vonage APIs for SIM swap detection and verification through SMS alongside Firebase services for hosting, database, and storing the logic. The demo application includes a simple bank dashboard and a login form. If the SIM Swap API detects that a phone number was swapped recently, the verification code will not be sent, and additional security measures will be applied. A verification code will be sent via the Verify v2 API to authenticate the user if no recent swap is detected.

About Amanda: Amanda Cavallaro is an Italo-Brazilian developer advocate @ Vonage. She is a Google Developers Expert for the Firebase and ML Cloud Conversational AI categories, passionate about cloud technologies, JavaScript, human-computer interactions, and ambient computing, and loves learning. You can speak to her in Portuguese, English, Italian, and a little Japanese.