What is decorating a Promise in JavaScript?

Adding methods like .timeout() via Proxy without altering await or core behavior.

How to add timeout to a Promise without wrapping?

Use Proxy get trap to intercept and implement Promise.race internally.

No — await returns the original value; Proxy forwards smoothly.

Yes for most cases, watch instanceof and stack traces.

💻 Programming Languages

A plain Promise stares back, uselessly silent on retries. One dev's Proxy hack changes that—forever.

theAIcatchup Apr 10, 2026 3 min read

Proxy lets you add .timeout(), .retry() to any Promise without breaking await or chains. 𝕏
Per-instance decoration avoids prototype risks, enabling clean composability. 𝕏
Pattern poised to standardize async utils, slashing boilerplate in apps. 𝕏

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Community-driven. Code-first.

#Promises #Proxies #Proxy #async programming #javascript

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Originally reported by Reddit r/programming