Determine if a filename and/or buffer is text or binary

 This library provides smarter detection than the other solutions.
 .
 Determination works like so:
  1. Extension Check: If filename is available, check if any of its extensions
  (from right to left) are an text extension or a binary extension, this is
  near instant.
  2. Contents Check: If no filename was provided, or the extension check was
  indeterminate, then check the contents of the buffer.
 .
 Node.js is an event-based server-side JavaScript engine.