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var baseToNumber = require('./_baseToNumber'),    baseToString = require('./_baseToString');
/** * Creates a function that performs a mathematical operation on two values. * * @private * @param {Function} operator The function to perform the operation. * @param {number} [defaultValue] The value used for `undefined` arguments. * @returns {Function} Returns the new mathematical operation function. */function createMathOperation(operator, defaultValue) {  return function(value, other) {    var result;    if (value === undefined && other === undefined) {      return defaultValue;    }    if (value !== undefined) {      result = value;    }    if (other !== undefined) {      if (result === undefined) {        return other;      }      if (typeof value == 'string' || typeof other == 'string') {        value = baseToString(value);        other = baseToString(other);      } else {        value = baseToNumber(value);        other = baseToNumber(other);      }      result = operator(value, other);    }    return result;  };}
module.exports = createMathOperation;