Aayush Mishra

Zero-dependency streaming CSV parser and writer for Node.js: RFC 4180, GB-size files with flat memory, schema validation, safe type casting, formula-injection protection, encodings and precise errors.

Zero-dependency cron parser and scheduler: computes the next run and arms a single setTimeout, no polling

Zero-dependency rate limiter for Node.js: in-memory or Redis (built-in RESP client, atomic Lua), sliding window, exact sliding log, token bucket, fixed window, penalties, multi-rule groups, node:cluster mode, safe client IPs and Express / node:http / Fetc