38 lines
1.1 KiB
JavaScript
38 lines
1.1 KiB
JavaScript
|
var baseIsNative = require('./_baseIsNative'),
|
||
|
|
isMaskable = require('./_isMaskable');
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 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('This method is not supported with core-js. Try https://github.com/es-shims.');
|
||
|
|
}
|
||
|
|
return baseIsNative(value);
|
||
|
|
}
|
||
|
|
|
||
|
|
module.exports = isNative;
|