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define(['./isSymbol'], function(isSymbol) {
  /** Used as references for various `Number` constants. */  var NAN = 0 / 0;
  /**   * The base implementation of `_.toNumber` which doesn't ensure correct   * conversions of binary, hexadecimal, or octal string values.   *   * @private   * @param {*} value The value to process.   * @returns {number} Returns the number.   */  function baseToNumber(value) {    if (typeof value == 'number') {      return value;    }    if (isSymbol(value)) {      return NAN;    }    return +value;  }
  return baseToNumber;});