Are the implementation of these two AES 256 scripts the same?

The first one appears to be a minified/compressed version of the gibberish, but I cannot tell what the variables are.

compressed version:

https://raw.githubusercontent.com/a3diti/aes256-offline/master/data/gibberish-aes-1.0.0.min.js

original:

https://raw.githubusercontent.com/mdp/gibberish-aes/master/dist/gibberish-aes-1.0.0.js

How can I test the integrity of these scripts. They do encrypt but how do I know that the key is sufficiently random.

I used the first one because it is shorter and it seems to work ,but not sure.