How to use the extension function from mime

mime.extension is a function provided by the mime library that returns the file extension associated with a given MIME type.

How does mime.extension work?

mime.extension is a function provided by the mime library that takes in a MIME type string and returns the file extension associated with that type. The function performs a lookup in an internal mapping of MIME types to extensions, and returns the corresponding extension if found. If the MIME type is not recognized, the function returns null. The mapping used by mime.extension can be customized or extended by calling other functions provided by the mime library, allowing you to add support for additional MIME types or override the default extensions associated with existing types. Overall, mime.extension provides a simple and convenient way to determine the file extension associated with a given MIME type, which can be useful in cases where file type information is needed for processing or display.

Ai Example

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const mime = require("mime");

const myMIMEType = "application/pdf";
const myExtension = mime.extension(myMIMEType);
console.log(myExtension); // "pdf"

In this example, we use mime.extension to determine the file extension associated with the MIME type 'application/pdf', which represents a PDF document. The extension function returns the corresponding file extension, which in this case is "pdf", since PDF documents typically use the ".pdf" file extension. Note that in order to use mime.extension, you need to have the mime library installed and imported in your application.