array-iterator-empty.js

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// Array.keys() and .entries() on an empty array produce empty iterators

var arr = [];

var ki = arr.keys(), ei = arr.entries();

var p = Object.getPrototypeOf(ki);

assertEq(Object.getPrototypeOf(ei), p);

for (let k of ki)

  throw "FAIL";

for (let [k, v] of ei)

  throw "FAIL";