Updates from 80th TC39 meeting

• proposal-array-find-from-last

  5 112 5.3 HTML

  Discontinued Proposal for Array.prototype.findLast and Array.prototype.findLastIndex.

  

Array find from last: findLast() and findLastIndex() methods on Array.prototype.

• proposal-intl-eradisplay

  2 10 3.5 HTML

  Intl.DateTimeFormat displays era field only if date displayed is in same era as today's

  

eraDisplay: eraDisplay option for Intl.DateTimeFormat eraDisplay option may take 3 values: "never", always", "auto".

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• proposal-async-do-expressions

  4 106 2.7 HTML

  async `do` expressions for JavaScript

  

async do: async do expressions allow you to introduce an asynchronous context within synchronous code without needing an immediately-invoked async function expression.

• RegExp.escape

  3 326 7.3 JavaScript

  Proposal for investigating RegExp escaping for the ECMAScript standard

  

Escaping Strings for RegExps: escaping a string for use inside a Regular Expression.

• proposal-lazy-import

  2 182 6.1 HTML

  A proposal for introducing a way to defer evaluate of a module

  

lazy-import: defer module import eval.

• proposal-class-brand-check

  2 18 0.0 HTML

  JavaScript proposal to provide class brand checks

  

Class brand check: class.hasInstance a meta method to check whether o have the class brand of C.

• proposal-intl-localematcher

  1 31 0.0 HTML

  Proposal for Intl.LocaleMatcher

  

Intl LocaleMatcher: Improve locale negotiation correctness and developer productivity part of ECMA-402.

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• proposal-intl-extend-timezonename

  1 7 0.0 HTML

  Discontinued Extend TimeZoneName Option Proposal

  

Extend TimeZoneName Option: Extend the timeZoneName option in Intl.DateTimeFormat object to support more formatted options, part of EMCA 402.

• proposal-intl-displaynames-v2

  3 22 0.0 HTML

  Discontinued Intl DisplayNames API V2

  

Intl.DisplayNames V2: A proposal to expose Locale information, such as week data (first day in a week, weekend start day, weekend end day, minimum day in the first week), hour cycle used in the locale, measurement system used in the locale, part of ECMA-402.

• proposal-intl-DateTimeFormat-formatRange

  2 27 0.5 HTML

  Discontinued ECMA 402 proposal for DateTimeFormat.prototype.{formatRange,formatRangeToParts}

  

Intl.DateFormat.prototype.formatRange Add formatRange(date1, date2) and formatRangeToParts(date1, date2) to Intl.DateTimeFormat to enable date range formatting.

• proposal-intl-locale-info

  3 49 6.6 HTML

  An API to expose information of locale, such as week data ( first day of a week, weekend start, weekend end), hour cycle, measurement system, commonly used calendar, etc.

  

Intl.DisplayNames: enable developers to get translation of language, region or script display names on the client, part of ECMA-402.

• proposal-module-expressions

  9 417 0.0 HTML
  

Module Blocks: Module blocks are syntax for the contents of a module, which can then be imported.

• proposal-json-modules

  8 263 4.9 HTML

  Proposal to import JSON files as modules

  

JSON modules: ability to import a JSON module in a common way across JavaScript environments.

• proposal-private-fields-in-in

  3 29 2.8 HTML

  Discontinued EcmaScript proposal to provide brand checks without exceptions

  

Ergonomic Brand Checks for Private Fields: Check if an object has a private field, and if not, have some fallback behavior.

• proposal-regexp-legacy-features

  1 40 0.0

  Legacy static properties of the RegExp constructor in JavaScript

  

regex-set-notation: Adopting Unicode behavior for set notation in regular expressions.

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