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Why use `var express ...` instead of `const express ...`?

In the last seconds of the video, why did you use var instead of const? Were you following a convention of some or you just didn't want to go over ECMAScript 6 things cause that's not the video's purpose?

1 Answer

Different people have different styles :)

I personally prefer const. I used to use var but at that time I never knew that const existed.