This content originally appeared on DEV Community and was authored by jQueryScript
fast-json-format is a JavaScript library that pretty-prints JSON strings without parsing them, which means you can format JSON containing BigInt literals without losing precision. The library handles these scenarios:
- Preserves BigInt values like 12345678901234567890n that would break JSON.parse
- Keeps decimal formatting intact (1.2300 stays 1.2300)
- Tolerates malformed JSON instead of throwing errors
- Zero dependencies, single file implementation
Check it out if you're working with APIs that return large integers or need to format JSON-like strings from logs where syntax might be imperfect.
👉 Blog Post
👉 GitHub Repo
👉 Live Demo
This content originally appeared on DEV Community and was authored by jQueryScript
jQueryScript | Sciencx (2025-10-23T04:58:46+00:00) fast-json-format: Format JSON Without Data Loss. Retrieved from https://www.scien.cx/2025/10/23/fast-json-format-format-json-without-data-loss/
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