code: function endsWith(source, dest, path) {
  	return (
  		path[path.length - 2] === source &&
  		path[path.length - 1] === dest
  	);
  }
docs: Whether the last step of the transform is from "source" to "dest"
  @param {string} source - The source code format
  @param {string} dest - The destination format
  @param {Array.<string>} path - Path of format transformations
  @return {Boolean} true if "source" -> "dest"  is the last step