I suppose if you have a big trust issue letting Cdnjs host your libraries or if you have a customized build of one, you could just do what they did and sign up

I suppose if you have a big trust issue letting Cdnjs host your libraries or if you have a customized build of one, you could just do what they did and sign up for CloudFlare and control the files yourself. [edit: CloudFlare, not Cloudfront]