1 var baseRange = require('./_baseRange'),
2 isIterateeCall = require('./_isIterateeCall'),
3 toNumber = require('./toNumber');
6 * Creates a `_.range` or `_.rangeRight` function.
9 * @param {boolean} [fromRight] Specify iterating from right to left.
10 * @returns {Function} Returns the new range function.
12 function createRange(fromRight) {
13 return function(start, end, step) {
14 if (step && typeof step != 'number' && isIterateeCall(start, end, step)) {
15 end = step = undefined;
17 // Ensure the sign of `-0` is preserved.
18 start = toNumber(start);
19 start = start === start ? start : 0;
20 if (end === undefined) {
24 end = toNumber(end) || 0;
26 step = step === undefined ? (start < end ? 1 : -1) : (toNumber(step) || 0);
27 return baseRange(start, end, step, fromRight);
31 module.exports = createRange;