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I had the need to find the extension of a file.
I had the name of the file, in my case an image, and wanted to get the extension (.jpg, .png..).
To do this, you can use the path built-in module and its extname() method:
const path = require('path')
path.extname('picture.png') //.png
path.extname('picture.of.a.dog.png') //.png
path.extname('picture.of.a.dog.jpg') //.jpg
path.extname('picture.of.a.dog.jpeg') //.jpeg
This content originally appeared on flaviocopes.com and was authored by flaviocopes.com
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