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Taobao Frontend Technology
Taobao Frontend Technology
Nov 5, 2024 · Frontend Development

What’s New in JavaScript? Deep Dive into ShadowRealm, import defer, and More

This article reviews several upcoming JavaScript proposals—including the Stage 2.7 Error.isError method, the sandboxing ShadowRealm API, the import‑defer syntax for lazy module loading, as well as Iterator.zip, Iterator.concat, and Math.sumPrecise—detailing their motivations, usage examples, and potential impact on web and Node.js development.

ECMAScript proposalsIteratorsJavaScript
0 likes · 11 min read
What’s New in JavaScript? Deep Dive into ShadowRealm, import defer, and More
Taobao Frontend Technology
Taobao Frontend Technology
Nov 5, 2024 · Frontend Development

New JavaScript Proposals: Error.isError, RegExp.escape, Uint8Array Base64

These recent ECMAScript proposals—Error.isError for reliable error type checking, RegExp.escape to safely escape user‑provided strings, Uint8Array methods for seamless Base64 and hex conversions, and Temporal.TimeZone.prototype.equals for robust time‑zone comparison—aim to simplify development across browsers and Node.js by addressing long‑standing inconsistencies.

Base64ECMAScript proposalsError Handling
0 likes · 8 min read
New JavaScript Proposals: Error.isError, RegExp.escape, Uint8Array Base64
Alibaba Terminal Technology
Alibaba Terminal Technology
Dec 28, 2021 · Fundamentals

What’s New in TC39’s December Meeting? Intl.Segmenter V2, Array.groupBy, RegExp Enhancements

The December TC39 meeting updated several proposals—including moving Intl.Segmenter to Stage 1 as V2, adding new timeZoneName values, expanding Intl.DisplayNames, introducing Array.prototype.groupBy and Array.fromAsync, and refining RegExp modifiers and buffer boundaries—while outlining the criteria for advancing proposals through the stages.

ECMAScript proposalsJavaScriptRegExp
0 likes · 18 min read
What’s New in TC39’s December Meeting? Intl.Segmenter V2, Array.groupBy, RegExp Enhancements
Alibaba Terminal Technology
Alibaba Terminal Technology
Sep 10, 2021 · Frontend Development

New TC39 Stage 3‑4 Proposals: .at(), Object.hasOwn, Pipeline Operator, and More

The article reviews the recent TC39 meeting, outlines the criteria for advancing proposals to Stage 4, and explains several upcoming ECMAScript features—including the relative‑indexing .at() method, Object.hasOwn, class static initialization blocks, the pipeline operator, and other proposals—providing code examples and implementation status.

ECMAScript proposalsJavaScriptTC39
0 likes · 17 min read
New TC39 Stage 3‑4 Proposals: .at(), Object.hasOwn, Pipeline Operator, and More
Node Underground
Node Underground
Mar 22, 2021 · Fundamentals

TC39 Updates: Error Cause, Temporal, Array.findLast & Module Fragments

Amid the pandemic‑driven shift to fully online TC39 meetings, the committee accelerated meeting frequency while trimming agendas, advancing proposals such as Error Cause to Stage 3, introducing the Temporal API to replace Date, adding Array.findLast methods, and exploring Module Fragments to improve JavaScript module handling.

Array.findLastECMAScript proposalsError Cause
0 likes · 14 min read
TC39 Updates: Error Cause, Temporal, Array.findLast & Module Fragments
Node Underground
Node Underground
Oct 12, 2020 · Fundamentals

TC39 Updates: Error Cause, Intl.DisplayNames, Import Assertions & More

The article reviews the latest TC39 meeting, detailing proposals that moved to higher stages—including Error Cause reaching Stage 4, Intl.DisplayNames enhancements, Import Assertions, .item() for indexables, class static blocks, resizable array buffers, Intl.Enumeration, double‑ended iterators, integer math extensions, standardized debug syntax, String.dedent, Intl.Locale, and DisplayNames v2—while outlining the criteria required for each stage transition.

ECMAScript proposalsError HandlingImport Assertions
0 likes · 19 min read
TC39 Updates: Error Cause, Intl.DisplayNames, Import Assertions & More
Alibaba Terminal Technology
Alibaba Terminal Technology
Oct 12, 2020 · Frontend Development

What’s New in TC39? From Error Cause to Intl.DisplayNames v2 and Beyond

The TC39 meeting covered a range of ECMAScript proposals—including Error Cause, Intl.DisplayNames, .item() for indexables, Import Assertions, Class static initialization blocks, ResizableArrayBuffer, Intl.Enumeration, Double‑Ended Iterators, integer‑math extensions, Standardized Debug, String Dedent, Intl Locale and DisplayNames v2—detailing their stage‑gate requirements, example implementations, and impact on JavaScript development.

ECMAScript proposalsError HandlingJavaScript
0 likes · 18 min read
What’s New in TC39? From Error Cause to Intl.DisplayNames v2 and Beyond