22     let arr1 = new Array(1023);  variable
24     print(ArkTools.isStableJsArray(arr1));
36     let arr1 = new Array(1023);  variable
38     arr1.__proto__ = arr2;
39     print(ArkTools.isStableJsArray(arr1));
48     let arr1 = new Array(1026);  variable
50     print(ArkTools.isStableJsArray(arr1));
62     let arr1 = new MyArray(1023);  variable
64     let arr3 = arr1.concat(arr2);
66     print(ArkTools.isStableJsArray(arr1));
80     let arr1 = new MyArray();  variable
82     let arr3 = arr1.concat();
84     print(ArkTools.isStableJsArray(arr1));
98     let arr1 = new MyArray(1, 2, 3, 4, 5);  variable
100     let arr3 = arr1.concat();
102     print(ArkTools.isStableJsArray(arr1));
113     let arr1 = new Array(1023);  variable
114     print(ArkTools.isStableJsArray(arr1));
115     arr1.__proto__.fill(233, 0, 0);
116     print(ArkTools.isStableJsArray(arr1));
117     arr1.__proto__.fill();
118     print(ArkTools.isStableJsArray(arr1));
119     arr1.__proto__.push();
120     print(ArkTools.isStableJsArray(arr1));
121     arr1.__proto__.unshift();
122     print(ArkTools.isStableJsArray(arr1));
123     arr1.__proto__.splice();
124     print(ArkTools.isStableJsArray(arr1));
132     let arr1 = new Array(1023);  variable
134     arr1.__proto__.push(1);
135     print(ArkTools.isStableJsArray(arr1.__proto__));
136     print(ArkTools.isStableJsArray(arr1));