The base implementation of `_.isNative` without bad shim checks.

@private
@param {*} value The value to check.
@returns {boolean} Returns `true` if `value` is a native function,
else `false`.
function baseIsNative$4(value) {
	  if (!isObject_1(value) || _isMasked(value)) {
	    return false;
	  }
	  var pattern = isFunction_1(value) ? reIsNative$4 : reIsHostCtor$4;
	  return pattern.test(_toSource(value));
	}