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What is require return node JS?

require.
This behaves exactly the same as the main require function, but does not load the file. It will still throw an error if the file does not exist and it will return the full path to the file when found.

Thereof, what is require in node JS?

We require a module by loading the content of a file into memory. However, since Node allows many ways to require a file (for example, with a relative path or a pre-configured path), before we can load the content of a file into the memory we need to find the absolute location of that file.

Beside above, what is module in node JS? Module in Node. js is a simple or complex functionality organized in single or multiple JavaScript files which can be reused throughout the Node. js application. Each module in Node. js has its own context, so it cannot interfere with other modules or pollute global scope.

Correspondingly, what is the purpose of node JS?

Node. js is a platform built on Chrome's JavaScript runtime for easily building fast and scalable network applications. Node. js uses an event-driven, non-blocking I/O model that makes it lightweight and efficient, perfect for data-intensive real-time applications that run across distributed devices.

How does require work in JavaScript?

a require function is expected to:

  1. read the content of a javascript file in a string.
  2. evaluate that code.
  3. save the exported function/object in a cache for later use (only read files once)

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