Module Scoped Variables
Module scoped variables are variables declared at the top level of a module (file) in programming languages that support modular code organization, such as JavaScript/TypeScript, Python, or Java. They are accessible throughout the entire module but not automatically exposed to other modules unless explicitly exported, providing encapsulation and reducing global namespace pollution. This concept helps manage state and dependencies within a modular architecture.
Developers should use module scoped variables to organize code into reusable, maintainable units by limiting variable visibility to the module where they are defined, which prevents unintended side effects and conflicts in larger applications. This is particularly useful in modern web development with frameworks like React or Node.js, where modules manage their own state and dependencies, and in any language supporting ES6 modules, CommonJS, or similar systems to structure projects.