TC39 meeting November; ESLint v8.29.0; typing import statements; error handling; making libraries faster

ES.nextNews: the latest in JavaScript and cross-platform tools
Curated by Dr. Axel Rauschmayer and Johannes Weber.

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The latest in JavaScript and cross-platform tools

Updates from the TC39 meeting in November 2022
dev.to @hemanth

Stage changes:

Stage 4: Intl Enumeration API
Stage 3: Set Methods, Explicit Resource Management, Iterator Helpers, Well-Formed Unicode Strings
Stage 2: eraDisplay option for Intl.DateTimeFormat, Async Explicit Resource Management
Stage 1: Mass Proxy Revocation, Intl era and monthCode, Intl.MessageFormat

ESLint v8.29.0 released
eslint.org @mdjermanovic, @eslint

Highlights (quoting the blog post):

The no-extra-parens rule has a new option allowParensAfterCommentPattern.
The prefer-named-capture-group rule now provides suggestions for some of the problems reported by this rule.

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Tips for typing import statements in JavaScript
2ality.com @rauschma

Quote: “This blog post gives tips for typing import statements more quickly, including a helpful text snippet for Visual Studio Code.”

modern-errors: handle errors in a simple, stable, consistent way
github.com @ehmicky

Features according to the project’s readme:

Creating error classes
Setting error properties
Wrapping or aggregating errors
Separating known and unknown errors
Normalizing potentially invalid errors

Speeding up the JavaScript ecosystem – one library at a time
marvinh.dev @marvinhagemeister

Quote: “Most popular libraries can be sped up by avoiding unnecessary type conversions or by avoiding creating functions inside functions.”

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