Creating Your First Elm App: From Authentication to Calling an API (Part 1)

All JavaScript app developers are likely familiar with this scenario: we implement logic, deploy our code, and then in QA (or worse, production) we encounter a runtime error! Maybe it was something we forgot to write a test for, or it’s an obscure edge case we didn’t foresee. Either way, when it comes to business logic in production code, we often spend post-launch with the vague threat of errors hanging over our heads.

Enter Elm: a functional, reactive front-end programming language that compiles to JavaScript, making it great for web applications that run in the browser. Elm’s compiler presents us with friendly error messages before runtime, thereby eliminating runtime errors.

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