🟩 - Full support

🟨 - Partial support

🟥 - No support

---

React Native v.0.71.4

ECMA Version	Feature	Android	Ios
ES2022	Array.prototype.at()	🟩	🟩
ES2022	Error: cause	🟩	🟩
ES2022	Object.hasOwn()	🟩	🟩
ES2022	String.prototype.at()	🟩	🟩
ES2021	Promise.any()	🟩	🟩
ES2021	String.prototype.replaceAll()	🟩	🟩
ES2020	Date.prototype.toLocaleDateString()	🟩	🟩
ES2020	Date.prototype.toLocaleString()	🟩	🟩
ES2020	Date.prototype.toLocaleTimeString()	🟩	🟩
ES2020	Number.prototype.toLocaleString()	🟩	🟩
ES2020	Promise.allSettled()	🟩	🟩
ES2020	String.prototype.matchAll()	🟩	🟩
ES2020	Symbol.matchAll	🟩	🟩
ES2019	Array.prototype.flat()	🟩	🟩
ES2019	Array.prototype.flatMap()	🟩	🟩
ES2019	Object.fromEntries()	🟩	🟩
ES2019	String.prototype.trimEnd()	🟩	🟩
ES2019	String.prototype.trimStart()	🟩	🟩
ES2019	Symbol.prototype.description	🟩	🟩
ES2018	AsyncGenerator	🟩	🟩
ES2018	Intl.NumberFormat.prototype.formatToParts()	🟩	🟥1
ES2018	Promise.prototype.finally()	🟩	🟩
ES2018	RegExp.prototype.dotAll	🟩	🟩
ES2018	RegExp.prototype.exec()	🟩	🟩
ES2018	RegExp.prototype.match()	🟩	🟩
ES2018	Symbol.asyncIterator	🟩	🟩
ES2017	Intl.DateTimeFormat.prototype.formatToParts()	🟩	🟩
ES2017	Object.entries()	🟩	🟩
ES2017	Object.getOwnPropertyDescriptors()	🟩	🟩
ES2017	Object.values()	🟩	🟩
ES2017	String.prototype.padEnd()	🟩	🟩
ES2017	String.prototype.padStart()	🟩	🟩
ES2017	TypedArray	🟩	🟩
ES2016	Array.prototype.includes()	🟩	🟩

Footnotes

1. https://github.com/facebook/hermes/issues/23#issuecomment-1242117062 ↩