HORIZON PROJECT

var baseIsNative = require('./_baseIsNative'),

    isMaskable = require('./_isMaskable');

/** Error message constants. */

var CORE_ERROR_TEXT = 'Unsupported core-js use. Try https://npms.io/search?q=ponyfill.';

/**

 * 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

 */

function isNative(value) {

  if (isMaskable(value)) {

    throw new Error(CORE_ERROR_TEXT);

  }

  return baseIsNative(value);

}

module.exports = isNative;