Idiomatic.js

idiomatic.js is a style guide repository that defines conventions and best practices for writing clean, readable, and maintainable JavaScript code, largely serving as a reference for developers to ensure consistency across projects. It lays out guidelines for topics such as formatting, naming, control structures, modularity, and language features, helping teams avoid common pitfalls and style disagreements. The guide includes examples of both recommended and discouraged patterns, making it easier to understand why a particular convention exists, not just what it is. Because JavaScript has many ways to express the same logic, idiomatic.js aims to narrow the surface of healthy patterns so collaborative projects can stay easy to read and review over time. Many community projects and companies adopt the guide wholesale or adapt it for their coding standards, which helps streamline onboarding and maintain code quality.