unjs/destr

Health v2 · maintenance only

Adoption not part of the score

1376 stars · 32 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

destr is a TypeScript library providing a faster, safer alternative to JSON.parse for arbitrary inputs. It gracefully falls back to the original value on parse failure, handles non-string inputs, and sanitizes __proto__ keys to prevent prototype pollution.

Use cases

• safely parse untrusted JSON from request bodies
• parse config values that may or may not be JSON strings
• avoid crashes from JSON.parse on undefined or plain strings
• prevent prototype pollution attacks when parsing JSON
• get typed JSON parsing results in TypeScript
• strictly validate JSON strings with safeDestr

When to choose

• input is arbitrary or from untrusted sources like HTTP request bodies
• you want graceful fallback instead of SyntaxError on invalid input
• you need protection against prototype pollution in parsed JSON
• you want a tiny, fast drop-in replacement for JSON.parse

When to avoid

• you only parse known-valid, trusted JSON where raw JSON.parse performance matters most
• you need full JSON5 or comment-tolerant parsing
• you need strict schema validation of parsed structures

Facets

library · maturity stable

serialization parser security developer-tools web-development backend apis bun cross-platform -parse prototype-pollution typescript untrusted-input safe-parsing nodejs deno

Member repositories

For agents

markdown · JSON · MCP: product_card(name="unjs/destr")