tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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bug1651732-proxy-set.js (456B)

      1 // An object with a custom [Symbol.toPrimitive] function.
      2 var key = {
      3  value: "a",
      4 
      5  [Symbol.toPrimitive]() {
      6    return this.value;
      7  }
      8 };
      9 
     10 var target = {};
     11 var obj = new Proxy(target, {});
     12 
     13 for (var i = 0; i < 100; ++i) {
     14  // Change key[Symbol.toPrimitive] to return a symbol after some warm-up.
     15  if (i > 80) {
     16    key.value = Symbol.iterator;
     17  }
     18 
     19  obj[key] = i;
     20 
     21  // Attach an IC for JSOp::SetElem on proxies.
     22  assertEq(target[key.value], i);
     23 }