Error handling in JavaScript has always felt a bit chaotic. Throwing errors is easy, but tracing them back to the root cause? Not so much. That’s where the cause property comes in. The problem with traditional error handling When you’re working with layered code (e.g., services calling services, wrapper functions,...

Using await in loops seems intuitive until your code silently stalls or runs slower than expected. If you’ve ever wondered why your API calls run one-by-one instead of all at once, or why map() and await don’t mix the way you’d expect, grab a chair. Let’s chat. The problem: awaiting...

Front-end developers frequently transform arrays: filtering, mapping, reducing. And sometimes grouping. Grouping used to require custom reduce() logic, which often felt like more boilerplate than it was worth. But that’s changing. JavaScript now has native support for grouping data with Object.groupBy() and Map.groupBy(). These static methods make grouping expressive, concise,...