define(['./isFunction', './_isMasked', './isObject', './_toSource'], function(isFunction, isMasked, isObject, toSource) {
var reRegExpChar = /[\\^$.*+?()[\]{}|]/g;
var reIsHostCtor = /^\[object .+?Constructor\]$/;
var funcProto = Function.prototype, objectProto = Object.prototype;
var funcToString = funcProto.toString;
var hasOwnProperty = objectProto.hasOwnProperty;
var reIsNative = RegExp('^' + funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\$&') .replace(/hasOwnProperty|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?') + '$' );
function baseIsNative(value) { if (!isObject(value) || isMasked(value)) { return false; } var pattern = isFunction(value) ? reIsNative : reIsHostCtor; return pattern.test(toSource(value)); }
return baseIsNative;});