Programs are read more often than they are written, emphasizing the importance of writing code that is easy to read. The provided JavaScript function, `createOrUpdateUserOnLogin`, is complex with deep nesting and redundant operations. The post outlines how to refactor such code by handling failure cases first, rearranging the flow, using clear variable names, and avoiding nested code blocks. The aim is to make the code readable and maintainable, akin to a well-written story.
Table of contents
The Problematic FunctionHow to Refactor the Code for Easier, More Delightful ReadingConclusionSort: