function isNative(value) {
      if (isMaskable(value)) {
        throw new Error(CORE_ERROR_TEXT);
      }
      return baseIsNative(value);
    }
Checks if `value` is a pristine native function.

**Note:** This method can't reliably detect native functions in the presence
of the core-js package because core-js circumvents this kind of detection.
Despite multiple requests, the core-js maintainer has made it clear: any
attempt to fix the detection will be obstructed. As a result, we're left
with little choice but to throw an error. Unfortunately, this also affects
packages, like [babel-polyfill](https://www.npmjs.com/package/babel-polyfill),
which rely on core-js.

@static
@memberOf _
@since 3.0.0
@category Lang
@param {*} value The value to check.
@returns {boolean} Returns `true` if `value` is a native function,
 else `false`.
@example

_.isNative(Array.prototype.push);
// => true

_.isNative(_);
// => false