Buffer() is deprecated in Node >8 there are new allocation methods now

[bnowrooz]

If you used this handy module, you will now receive these warnings:

DeprecationWarning: Buffer() is deprecated due to security and usability issues. Please use the Buffer.alloc(), Buffer.allocUnsafe(), or Buffer.from() methods instead

Quick look at the Buffer documentation explains what:
https://nodejs.org/api/buffer.html#buffer_class_method_buffer_from_buffer

Why:
https://nodejs.org/api/buffer.html#buffer_what_makes_buffer_allocunsafe_and_buffer_allocunsafeslow_unsafe