ES9

版本记录

• 在线规范

版本介绍

来源：https://262.ecma-international.org/9.0/ Introduction

This specification, the 9th edition, introduces support for asynchronous iteration via the AsyncIterator protocol and async generators. This specification also includes four new regular expression features: the dotAll flag, named capture groups, Unicode property escapes, and look-behind assertions. It also includes rest parameter and spread operator support for object properties. There have also been many minor updates, editorial and normative, with many contributions from our awesome community.

版本概要

• Lifting template literal restriction
• s (dotAll) flag for regular expressions
  • 所有正则修饰符
• RegExp named capture groups
• Rest/Spread Properties
• RegExp Lookbehind Assertions
• RegExp Unicode Property Escapes
• Promise.prototype.finally
• Asynchronous Iteration

版本特性

TODO：待补充