var isFunction = require('./isFunction'),
isMasked = require('./_isMasked'), isObject = require('./isObject'), toSource = require('./_toSource');
/**
* Used to match `RegExp` * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns). */
var reRegExpChar = /[\^$.*+?()[]{}|]/g;
/** Used to detect host constructors (Safari). */ var reIsHostCtor = /^[object .+?Constructor]$/;
/** Used for built-in method references. */ var funcProto = Function.prototype,
objectProto = Object.prototype;
/** Used to resolve the decompiled source of functions. */ var funcToString = funcProto.toString;
/** Used to check objects for own properties. */ var hasOwnProperty = objectProto.hasOwnProperty;
/** Used to detect if a method is native. */ var reIsNative = RegExp('^' +
funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\$&') .replace(/hasOwnProperty|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?') + '$'
);
/**
* 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(value) {
if (!isObject(value) || isMasked(value)) { return false; } var pattern = isFunction(value) ? reIsNative : reIsHostCtor; return pattern.test(toSource(value));
}
module.exports = baseIsNative;