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var out = [];
var arr1 = [1, 2];
var arr2 = [1, 2];
arr2.a = 1;
var toggle = false;
function f(obj, trigger) {
var cnt = 0;
for (var key in obj) {
out[cnt++] = obj[key];
trigger();
}
}
function rec(cnt, test) {
if (cnt == 0) {
Object.defineProperty(test ? arr1 : arr2, "1", {enumerable: false});
} else {
rec(cnt - 1, test);
}
}
function trigger() {
if (!toggle) {
return;
}
let lo = 1000;
let hi = 32768;
while (hi - lo > 1) {
let mid = (lo + hi) >> 1;
try {
rec(mid, true);
lo = mid;
} catch (e) {
hi = mid;
}
}
try {
rec(hi - offset, false);
} catch {}
}
for (var i = 0; i < 2000; i++) {
f(arr2, trigger);
}
for (var offset = 2; offset < 4; offset++) {
arr2[1] = 2;
toggle = true;
f(arr2, trigger);
s = out.toString();
}