You can access this value under the MAX_SAFE_INTEGER constant. The biggest integer 'usual' number type can handle is equal to 2 ** 53 - 1 or 9007199254740991. It's meant to allow developers to work with some really big integers. BigInt is a new 7th primitive data type in JavaScript and arguably the biggest new addition of ES2020. And even though most web developers won't use all those features right away due to compatibility concerns, it's good to keep an eye on where the language is going.Īnd so, in this article, we'll go over the biggest of the new features introduced with ES2020. With that said, it's still a nice thing to have this moment in a year that you can say which new JS features are here for sure.

This means that while new editions of the ES specification go through the whole proposal, discussion, approval and finalization process, individual features often appear much earlier in different browsers than the yearly specification release. Now, as you might know from my previous article about ECMAScript and the one about ES2019 features, JavaScript, ever since the introduction of ES6, is experiencing kind-of a rolling release cycle. It's June and this means that the new 11th edition of ECMA-262 standard defining the ECMAScript and thus JavaScript language will be out shortly.

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