# @engineerinazure on Instagram

- **Type:** Video
- **Original URL:** https://www.instagram.com/p/DTLIgecE_R0
- **Gondola URL:** https://gondola.cc/posts/63504202-engineerinazure-instagram
- **Thumbnail:** https://img.gondola.cc/tr:w-,h-,fo-auto/postThumbnails/0ffa5572d8.jpg
- **Posted:** 2026-01-06T15:17:22.000+00:00
- **Account Owner:** Kundan (@engineerinazure) — https://gondola.cc/engineerinazure

## Caption

Follow @engineerinazure 
Prod bugs rarely come from wrong logic.
They come from silent mutation.

One index assignment,
one shared array,
and suddenly UI becomes non-deterministic.

Array.prototype.with() fixes this by design —
new array, clear intent, no side-effects.

If your data is cached, shared, or reused across execution paths,
mutation isn’t an optimization — it’s a bug.

Save this.
Your future post-mortem will thank you.

#JavaScript
#WebDevelopment
#FrontendEngineering
#SoftwareEngineering
#CleanCode

## Stats

- **Views:** 427
- **Likes:** 18
- **Shares:** 0
- **Comments:** 0

## Tags

softwareengineering, webdevelopment, javascript, cleancode, frontendengineering

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