json-stringify-keys.js

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/* Any copyright is dedicated to the Public Domain.

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

// JSON.stringify ignores symbol-keyed properties, even enumerable ones.

var obj = {a: 1};

obj[Symbol.for("ponies")] = {toJSON: function () { throw "fit"; }};

obj[Symbol.iterator] = {toJSON: function () { throw "fit"; }};

assertEq(JSON.stringify(obj), '{"a":1}');

var replacer = function (k, v) {

    if (typeof k === "symbol")

        throw "fit";

    return v;

};

assertEq(JSON.stringify(obj, replacer), '{"a":1}');

if (typeof reportCompare === 'function')

    reportCompare(0, 0, 'ok');