@deathf4ult/converters

Privacy-first format helpers: JSON (format, minify, validate, structural diff), Base64 (text and file), CSV (RFC 4180), URL encoding, and JWT decoding (no signature verification). Pure TypeScript with zero runtime dependencies.

Source repo: github.com/deathfal/formatgrove-converters

Install

pnpm add @deathf4ult/converters
# or
npm install @deathf4ult/converters

Usage

import { formatJson, decodeBase64, csvToJson, decodeJwt } from "@deathf4ult/converters";

const r = formatJson('{"a":1}');
if (r.ok) console.log(r.value);

const d = decodeJwt(token);
if (d.ok) console.log(d.value.payload);

Security

• JWT helpers decode only. They do not verify signatures or alg — never trust decoded tokens for authorization without verification.
• Intended for browser or trusted Node environments; all string operations run in memory.

License

MIT