The Tor Browser / file revision

 load(libdir + "parallelarray-helpers.js");

 function makeObject(e, i, c) {

   var v = {element: e, index: i, collection: c};

   if (e == 0) // note: happens once

     delete v.index;

   return v;

 }

 function test() {

   var array = range(0, 768);

   var array1 = array.map(makeObject);

   assertParallelExecWillRecover(function (m) {

     var pa = array.mapPar(makeObject, m);

     assertStructuralEq(pa, array1);

   });

 }

 if (getBuildConfiguration().parallelJS)

   test();