tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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Map-constructor-generator-1.js (443B)

      1 // The argument to Map can be a generator.
      2 
      3 var done = false;
      4 function* data(n) {
      5    var s = '';
      6    for (var i = 0; i < n; i++) {
      7        yield [s, i];
      8        s += '.';
      9    }
     10    done = true;
     11 }
     12 
     13 var m = new Map(data(50));
     14 assertEq(done, true);  // the constructor consumes the argument
     15 assertEq(m.size, 50);
     16 assertEq(m.get(""), 0);
     17 assertEq(m.get("....."), 5);
     18 assertEq(m.get(Array(49+1).join(".")), 49);
     19 assertEq(m.has(undefined), false);