ECMAScript 2020, the next version of the official specification underlying JavaScript, is expected to be formally adopted in June, subject to approval by ECMA International and the ECMA technical committee overseeing the specification. 

ECMAScript 2020 introduces multiple features ranging from a new import() facility for loading modules to a new BigInt type for working with arbitrary precision integers. 

Specific features planned for ECMAScript 2020 include:

The last update to ECMAScript, ECMAScript 2019, featured capabilities such as prototype.flatMap for nested arrays.

This story, "ECMAScript 2020 spec for JavaScript moves forward" was originally published by InfoWorld.