Function createRange

test-app/public/sinon.js:15960–15976

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

(fromRight)

         * @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);
          };
        }
    
        /**
         * Creates a function that performs a relational operation on two values.