Since we're already using core-js elsewhere in `compatibility.js`, we can reduce the amount of code we need to maintain ourselves. https://github.com/zloirock/core-js#ecmascript-6-promise
Since we're already using core-js elsewhere in `compatibility.js`, we can reduce the amount of code we need to maintain ourselves. https://github.com/zloirock/core-js#ecmascript-6-promise