Installation

Install the core package. Everything else is optional — install only what your stack needs.

Core package

bash

npm install @periodic/arsenic

bash

yarn add @periodic/arsenic

Peer dependencies

Arsenic has zero required dependencies. Install only the peer deps that match your stack:

Database adapters

bash

# MongoDB via Mongoose
npm install mongoose

# SQL via Prisma
npm install @prisma/client

# PostgreSQL raw driver
npm install pg

# Redis (either client works)
npm install redis
npm install ioredis

Framework support

bash

npm install express   # For Express
npm install fastify   # For Fastify

Exporters

bash

npm install @opentelemetry/api  # For OpenTelemetry

Peer dependency table

Package	Used for	Required?
`mongoose`	MongoDB via Mongoose adapter	No — only with Mongoose
`@prisma/client`	SQL databases via Prisma adapter	No — only with Prisma
`pg`	PostgreSQL via raw pg adapter	No — only with pg
`ioredis / redis`	Redis adapter	No — only with Redis
`express`	Express request context	No — only with Express
`fastify`	Fastify request context	No — only with Fastify
`@opentelemetry/api`	OpenTelemetry exporter	No — only if using OTEL

Requirements

Node.js ≥ 16.0.0 (AsyncLocalStorage support)
TypeScript ≥ 4.5.0 (if using TypeScript)
npm ≥ 7.0.0

TypeScript support included

Full TypeScript types are bundled. No @types/ package needed. Strict mode compatible.