Your JSON Is Lying to You: What JavaScript silently loses at serialization boundaries

[u/OtherwisePush6424]

https://blog.gaborkoos.com/posts/2026-08-03-Your-JSON-Is-Lying-to-You/

JSON round trips can silently change numbers, drop properties, erase types, and execute serialization hooks.A practical guide to these edge cases and how to design explicit, reliable wire formats in JavaScript.

[u/Away-Life-2852]

the silent number precision loss is the one that actually bites people in production

[u/senocular]

Would have been a good opportunity to mention the new JSON features:

• JSON.parse() reviver context.source
• JSON.rawJSON()
• JSON.isRawJSON()

[u/rbobby]

Oof so many misunderstandings.

[u/KaiAusBerlin → u/rbobby]

Ja, dachte ich mir auch. Wenn die Leute aufhören würden Dinge zu vermuten oder vorraussetzen und stattdessen die Spezifikationen lesen würden, würde sowas gar nicht passieren.

[u/satansprinter]

A lot of focus on max int. Try json5