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Sohu Tech Products
Sohu Tech Products
Sep 28, 2022 · Fundamentals

New ECMAScript 2023 Array Proposals: Non‑Destructive Methods, Grouping, Find‑From‑Last, and fromAsync

The article explains the upcoming ECMAScript 2023 proposals—including non‑destructive array methods (toReversed, toSorted, toSpliced, with), array grouping (group, groupToMap), reverse‑search methods (findLast, findLastIndex), and the asynchronous constructor Array.fromAsync—detailing their stages, usage examples, polyfills, and type signatures for modern JavaScript development.

Array MethodsECMAScriptGrouping
0 likes · 14 min read
New ECMAScript 2023 Array Proposals: Non‑Destructive Methods, Grouping, Find‑From‑Last, and fromAsync
Taobao Frontend Technology
Taobao Frontend Technology
Jun 23, 2022 · Frontend Development

What the Latest TC39 Proposals Mean for JavaScript Developers

This article reviews recent TC39 proposals—including findLast, Symbol-as-WeakMap keys, JSON.parse source text access, String.dedent, RegExp modifiers, atomic operators, and faster Promise adoption—explaining their stage progress, technical details, and practical code examples for modern JavaScript development.

ECMAScriptJavaScriptPromise
0 likes · 17 min read
What the Latest TC39 Proposals Mean for JavaScript Developers