cannot get file extension with NodeJS and mime package

Question

I try to get a file extension from a 'video/avi' mimetype.

I'm using the mime package on NodeJs. (https://www.npmjs.com/package/mime).

var mime = require('mime');
mime.extension('video/mp4'); // return mp4
mime.extension('video/avi'); // doesn't work.

When i'm using mime.extension() with 'video/avi' mimetype as param, undefined is returned.

What is the solution ?

I don't want split file name to get extension.

Answer 1

video/avi is missing in mime types. you can define if you want.

mime.define({
    'video/avi': ['avi']
});

mime.extension('video/avi'); // return avi