What is structuredClone in JavaScript?

Native deep cloning API. Fixes JSON.parse/stringify flaws with Dates, Maps, Sets. Use it for safe copies in React state edits.

Does Object.groupBy replace lodash?

Absolutely — one-liner grouping by key. Returns object of arrays. Map.groupBy for Maps. Ditch the 24KB bloat.

96%+ global. Chrome 92+, Firefox 90+. Polyfill if needed, but ship native.

AbortController.signal in fetch options. controller.abort() kills it. Perfect for search debouncing or useEffect cleanup.

🌐 Frontend & Web

State of JS 2023: 62% of respondents still install lodash weekly. Meanwhile, browsers shipped fixes years ago. Time to evict the dead weight.

theAIcatchup Apr 10, 2026 3 min read

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#AbortController #Built-in APIs #Frontend Development #Modern JS APIs #Modern JavaScript #Object.groupBy #React Best Practices #javascript #modern-js #performance #performance optimization #structuredClone

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