The browser APIs you're shipping libraries to replace with Kilian Valkhof

Most developers reach for date-fns or Moment.js without realizing the browser already ships a powerful string formatting library called the JavaScript Intl API. Killian Valkhof, creator of Polypane, walks through how locale-aware date formatting, currency formatting, the Segmenter API, and the Collator API can replace heavy npm dependencies, with support for over 7,000 locales baked right into every evergreen browser since 2017. Links Resources INTL: The best browser API you’re not using | Kilian Valkhof: We want to hear from you! How did you find us? Did you see us on Twitter? In a newsletter? Or maybe we were recommended by a friend? Fill out our listener survey ! Let us know by sending an email to our producer, Elizabeth, at elizabeth.becz@logrocket.com , or tweet at us at PodRocketPod . Check out our newsletter !

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The browser APIs you're shipping libraries to replace with Kilian Valkhof is an episode from PodRocket - A web development podcast from LogRocket by LogRocket.

This episode is 38:27 long.

This episode was published on Apr 2, 2026.

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