JSON.stringify is outputting the "own, enumerable" properties. The default properties of window.navigator aren't enumerable and/or come through the prototype ch

JSON.stringify is outputting the "own, enumerable" properties. The default properties of window.navigator aren't enumerable and/or come through the prototype chain. The rules for JSON.stringify are actually pretty complicated: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify#description https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe...