polyfill.io is a neat service that lets you load polyfills for newer JavaScript features only if the visitor's browser needs it.
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Array.filter() and Crafting Your Custom Polyfill, by Shankar J, Dec, 2023
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The performance benefits of progressive enhancement - Browser London
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JavaScript Polyfills On The Fly Depending On The Browser With polyfill.io - Andreas Wik
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PolyFill JS - javatpoint
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Polyfills, transpilation, and browser support, by Dominic Fraser
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