JS sequence interface with inheritance example

seq_interface.js

function ArraySeq(array) {
  this.array = array;
}
ArraySeq.prototype.current = function() {
  return this.array[0];
}
ArraySeq.prototype.remaining = function() {
  if (this.array[1]) {
    return new ArraySeq(this.array.slice([1]));
  }
  else return false;
}

function RangeSeq(begin, end) {  
  var array = [];
  for (var i = begin; i <= end; i++) {
   array.push(i);
  }
  ArraySeq.call(this, array);
}
RangeSeq.prototype = Object.create(ArraySeq.prototype);

function logFive(sequence) {
  var i = 0;
  var tempSeq = sequence;
  while (tempSeq && i < 5) {
    console.log(tempSeq.current());
    tempSeq = tempSeq.remaining();
    i++;
  }
}

logFive(new ArraySeq([1, 2]));
// → 1
// → 2
logFive(new RangeSeq(100, 1000));
// → 100
// → 101
// → 102
// → 103
// → 104