var baseRange = require('./_baseRange'),

isIterateeCall = require('./_isIterateeCall'),
toFinite = require('./toFinite');

/**

* Creates a `_.range` or `_.rangeRight` function.
*
* @private
* @param {boolean} [fromRight] Specify iterating from right to left.
* @returns {Function} Returns the new range function.
*/

function createRange(fromRight) {

return function(start, end, step) {
  if (step && typeof step != 'number' && isIterateeCall(start, end, step)) {
    end = step = undefined;
  }
  // Ensure the sign of `-0` is preserved.
  start = toFinite(start);
  if (end === undefined) {
    end = start;
    start = 0;
  } else {
    end = toFinite(end);
  }
  step = step === undefined ? (start < end ? 1 : -1) : toFinite(step);
  return baseRange(start, end, step, fromRight);
};

}

module.exports = createRange;