function parseInt(string, radix, guard) {
	      if (guard && isIterateeCall(string, radix, guard)) {
	        radix = 0;
	      }
	      return nativeParseInt(string, radix);
	    }
Converts `string` to an integer of the specified radix. If `radix` is
`undefined` or `0`, a `radix` of `10` is used unless `value` is a hexadecimal,
in which case a `radix` of `16` is used.

**Note:** This method aligns with the ES5 implementation of `parseInt`.
See the [ES5 spec](https://es5.github.io/#E) for more details.

@static
@memberOf _
@category String
@param {string} string The string to convert.
@param {number} [radix] The radix to interpret `value` by.
@param- {Object} [guard] Enables use as a callback for functions like `_.map`.
@returns {number} Returns the converted integer.
@example

_.parseInt('08');
// => 8

_.map(['6', '08', '10'], _.parseInt);
// => [6, 8, 10]