详细对比

src_out.js

 _getOwnPropertyNames = Object.getOwnPropertyNames;
 Object.getOwnPropertyNames = function (a) {
 let res = _getOwnPropertyNames(a);
-    console.log('getOwnPropertyNames', a, res)
+    con4('getOwnPropertyNames', a, res)
     return res;
 }
 con4 = console.log
@@ -30,7 +30,7 @@ Object.defineProperty = function (p, v, d) {
 _join = Array.prototype.join;
 Array.prototype.join = function (s){
     let res = _join.call(this, s);
-    console.log('join', this, s, res)
+    con4('join', this, s, res)
 
     return res;
 }