tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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Map-clear-iterators-1.js (527B)

      1 // A Map iterator does not visit entries removed by clear().
      2 
      3 load(libdir + "iteration.js");
      4 
      5 var m = new Map();
      6 var it = m[Symbol.iterator]();
      7 m.clear();
      8 assertIteratorDone(it, undefined);
      9 
     10 m = new Map([["a", 1], ["b", 2], ["c", 3], ["d", 4]]);
     11 it = m[Symbol.iterator]();
     12 assertIteratorNext(it, ["a", 1]);
     13 m.clear();
     14 assertIteratorDone(it, undefined);
     15 
     16 var log = "";
     17 m = new Map([["a", 1], ["b", 2], ["c", 3], ["d", 4]]);
     18 for (var [k, v] of m) {
     19    log += k + v;
     20    if (k == "b")
     21        m.clear();
     22 }
     23 assertEq(log, "a1b2");