from_primitive.js - mozsearch

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/* Any copyright is dedicated to the Public Domain.

 * http://creativecommons.org/licenses/publicdomain/ */

for (let primitive of [true, 3.14, "hello", Symbol()]) {

    let prototype = Object.getPrototypeOf(primitive);

    Object.defineProperty(prototype, Symbol.iterator, {

        configurable: true,

        get() {

            "use strict";

            assertEq(this, primitive);

            return () => [this][Symbol.iterator]();

},

});

    assertEq(Array.from(primitive)[0], primitive);

    delete prototype[Symbol.iterator];

if (typeof reportCompare === 'function')

    reportCompare(0, 0);