ECMAScript 2019 (ES10) is the tenth edition of the ECMAScript Language Specification

• https://262.ecma-international.org/10.0/

• http://www.ecma-international.org/ecma-262/10.0/index.html

• https://en.wikipedia.org/wiki/ECMAScript#ES2019

• https://exploringjs.com/es2018-es2019/

• https://css-tricks.com/all-the-new-es2019-tips-and-tricks/

• https://flaviocopes.com/es2019/

https://github.com/tc39/proposals/blob/master/finished-proposals.md

• https://github.com/tc39/proposal-optional-catch-binding

• https://github.com/tc39/proposal-json-superset

• https://github.com/tc39/proposal-Symbol-description

• https://github.com/tc39/proposal-well-formed-stringify

• https://github.com/tc39/proposal-object-from-entries

• https://github.com/tc39/proposal-Symbol-description

• https://github.com/tc39/Function-prototype-toString-revision

• https://github.com/tc39/proposal-string-left-right-trim

• https://github.com/tc39/proposal-flatMap

Description

The 10th edition, officially known as ECMAScript 2019 , was published in June 2019.

Added features include, but are not limited to, Array.prototype.flat, Array.prototype.flatMap, changes to Array.sort and Object.fromEntries .

Object.fromEntries

• Object.fromEntries TC39 proposal for Object.fromEntries (https://github.com/tc39/proposal-object-from-entries)
  • Proposal
  • Rationale
  • When is this useful ?
  • Motivating examples
  • Object from existing collection
  • Prior art
    • Lodash
    • Python
  • Object.fromEntries (https://css-tricks.com/all-the-new-es2019-tips-and-tricks/)
  • Articles
    • https://javascript.info