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
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