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import isObject from './isObject.js'
/**
* Used to match `RegExp`
* [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns).
*/
const reRegExpChar = /[\\^$.*+?()[\]{}|]/g
/** Used to detect if a method is native. */
const reIsNative = RegExp(`^${
Function.prototype.toString.call(Object.prototype.hasOwnProperty)
.replace(reRegExpChar, '\\$&')
.replace(/hasOwnProperty|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?')
}$`)
/**
* Checks if `value` is a pristine native function.
*
* @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(isDate)
* // => false
*/
function isNative(value) {
return isObject(value) && reIsNative.test(value)
}
export default isNative
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