tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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array-iterator-shrinking.js (548B)

      1 // If an array is truncated to the left of an iterator it, it.next() returns { done: true }.
      2 
      3 load(libdir + "asserts.js");
      4 load(libdir + "iteration.js");
      5 
      6 var arr = [0, 1, 2];
      7 var it = arr[Symbol.iterator]();
      8 var ki = arr.keys();
      9 var ei = arr.entries();
     10 
     11 assertIteratorNext(it, 0);
     12 assertIteratorNext(it, 1);
     13 assertIteratorNext(ki, 0);
     14 assertIteratorNext(ki, 1);
     15 assertIteratorNext(ei, [0, 0]);
     16 assertIteratorNext(ei, [1, 1]);
     17 arr.length = 1;
     18 assertIteratorDone(it, undefined);
     19 assertIteratorDone(ki, undefined);
     20 assertIteratorDone(ei, undefined);