Dear readers!
We are taking a mid-year break and will be back on September 13. Have a great July and August!
Jowe & Axel
Ecma International approves ECMAScript 2022: What’s new?
2ality.com
@2ality
New features in ECMAScript 2022:
- New members of classes:
- Properties (public slots) can now be created via instance public fields and static public fields.
- Private slots are new and can be created via:
- Private fields (instance private fields and static private fields)
- Private methods and accessors (non-static and static)
- Static initialization blocks
- Private slot checks via
in
- Top-level
await in modules
error.cause- Method
.at() of indexable values (strings, Arrays, TypedArrays)
- RegExp match indices
Object.hasOwn(obj, propKey)
Secretary General of Ecma International (host of TC39)
www.ecma-international.org
Sponsor
The job opportunity of a lifetime: You could be the Secretary General of Ecma, helping run the international standards body which oversees TC39 (home of ECMAScript) and many other Technical Committees. If you can work in Geneva and love standards, please apply!
In defense of blocks for local scopes
gist.github.com
@getify
Kyle Simpson argues in favor of using block statements to give a sequence of statements its own scope.
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retool.com
Sponsor
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You don’t need void 0 in JavaScript
p42.ai
@lgrammel,
@p42ai
In JavaScript code, especially if it’s older, you may have seen void 0 being used as an alternative to undefined. This blog post explains:
- Why
void 0 is an alternative to undefined.
- Why avoiding
undefined made sense before ECMAScript 6.
- Why that’s not necessary anymore.
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