Array-of-4.js - mozsearch

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// Array.of does not trigger prototype setters.

// (It defines elements rather than assigning to them.)

var status = "pass";

Object.defineProperty(Array.prototype, "0", {set: v => status = "FAIL 1"});

assertEq(Array.of(1)[0], 1);

assertEq(status, "pass");

function Bag() {}

Bag.of = Array.of;

Object.defineProperty(Bag.prototype, "0", {set: v => status = "FAIL 2"});

assertEq(Bag.of(1)[0], 1);

assertEq(status, "pass");