What is it?​

@open-kerno/commons is a collection of well-tested, typed modules designed to solve common problems across backend services. Instead of copying the same utilities from project to project, you can install this package and start using them right away.

What is included?​

• HTTP — HttpStatusCode and HttpMethod enums covering all standard codes and methods.
• Errors — Typed error classes (ServerError, BadRequestError, InternalServerError, DatabaseConnectionError) with HTTP status codes and optional error payloads.
• Collections — createMapFromArray and createSetFromArray for fast lookups.
• Math — prorate for proportional distribution and roundWithPrecision for accurate rounding.
• Logger — A structured logger with field masking, built on Winston.
• Infrastructure — A PostgreSQL connection pool wrapper with session and transaction helpers.
• Object — encodeJSON for safe JSON parsing with typed fallbacks.

Getting started​

npm install @open-kerno/commons

Check the documentation for the full API reference.