function test() { | |
// Array.prototype.shift -> Set -> [[Set]] | |
var set = []; | |
var p = new Proxy([0,0,,0], { set: function(o, k, v) { set.push(k); o[k] = v; return true; }}); | |
p.shift(); | |
return set + '' === "0,2,length"; | |
} | |
if (!test()) | |
throw new Error("Test failed"); | |