Functions inside other functions... Worth it?
How a simple trick with console.log can help you with refactoring
The Boy Scout rule (always leave the code in a better state than when you found it) is famous among developers, but does it have its pitfalls? Meet Simon and Andy, who have a lot to share.
Does your project have an enormous module called something-manager or something-controller that grew beyond any possible limits and became completely unmaintainable? How to prevent it from happening?
How urgent is it to fix bugs? The question may sound ridiculous, but the answer isn't straightforward. Well, it depends on a bug, isn't it?
Is it okay to use implementation details in tests? And if not, why so?
The data-layer of your application (database, Redux state, etc.) should not have any assumptions about the interface. When it does, it increases the risk of accidental complexity.