Function arrayStartsWith

src/diff.js:1099–1111

(array, start)

    return arrayStartsWith(a, b);
  }
  function arrayStartsWith(array, start) {
    if (start.length > array.length) {
      return false;
    }

    for (var i = 0; i < start.length; i++) {
      if (start[i] !== array[i]) {
        return false;
      }
    }

    return true;
  }

  function calcLineCount(hunk) {
    var _calcOldNewLineCount = calcOldNewLineCount(hunk.lines),