In Node.js, the module system has come a long way from its earlier adoption of CommonJS. Modules enable code organization by splitting a codebase into reusable components such that each performs individual functions and can be combined or composed to form larger functionalities or an entire application. This setup affords a loosely coupled system due to a smooth interface of communication, as there are no global variables or shared state.Īlthough the concept of modules is quite different depending on the language, they are akin to the idea of namespaces in languages like Java.
In modular design, business logic pertaining to particular features or functionalities are packaged (modularized) in a standardized format for reusability, flexibility, and for the sake of reducing complexity. The module system is supported in many languages and is quite popular since the way dependencies are handled, packaged, and managed determines how easy it is to work with a large and growing source code. They are basically a design pattern that implements features of m odular design in programming languages. Modules are independent building blocks of a software program. “Before software can be reusable, it first has to be usable.” – Ralph Johnson Using ES modules in Node.jsĮditor’s note: This article was updated on 3 March 2021. React, Node.js, Python, and other developer tools and libraries. Alexander Nnakwue Follow Software engineer.
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