aaac7fed
 liuqimichale
add
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var isES5 = (function(){
"use strict";
return this === undefined;
})();
if (isES5) {
module.exports = {
freeze: Object.freeze,
defineProperty: Object.defineProperty,
getDescriptor: Object.getOwnPropertyDescriptor,
keys: Object.keys,
names: Object.getOwnPropertyNames,
getPrototypeOf: Object.getPrototypeOf,
isArray: Array.isArray,
isES5: isES5,
propertyIsWritable: function(obj, prop) {
var descriptor = Object.getOwnPropertyDescriptor(obj, prop);
return !!(!descriptor || descriptor.writable || descriptor.set);
}
};
} else {
var has = {}.hasOwnProperty;
var str = {}.toString;
var proto = {}.constructor.prototype;
var ObjectKeys = function (o) {
var ret = [];
for (var key in o) {
if (has.call(o, key)) {
ret.push(key);
}
}
return ret;
};
var ObjectGetDescriptor = function(o, key) {
return {value: o[key]};
};
var ObjectDefineProperty = function (o, key, desc) {
o[key] = desc.value;
return o;
};
var ObjectFreeze = function (obj) {
return obj;
};
var ObjectGetPrototypeOf = function (obj) {
try {
return Object(obj).constructor.prototype;
}
catch (e) {
return proto;
}
};
var ArrayIsArray = function (obj) {
try {
return str.call(obj) === "[object Array]";
}
catch(e) {
return false;
}
};
module.exports = {
isArray: ArrayIsArray,
keys: ObjectKeys,
names: ObjectKeys,
defineProperty: ObjectDefineProperty,
getDescriptor: ObjectGetDescriptor,
freeze: ObjectFreeze,
getPrototypeOf: ObjectGetPrototypeOf,
isES5: isES5,
propertyIsWritable: function() {
return true;
}
};
}
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