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🫐 Acai

Auto-loading, self-validating, minimalist JavaScript library for Amazon Web Service Lambdas.

🚀 Features

  • Highly configurable API Gateway router powered by a unified glob resolver
  • OpenAPI validation for events and responses across API Gateway, S3, SQS, and DynamoDB
  • Extensible middleware hooks (beforeAll, afterAll, withAuth, endpoint before/after)
  • DRY, declarative handler patterns that minimise boilerplate
  • Seamless local development and testing experience
  • Embraces the Happy Path Programming philosophy—validate first, then focus on business logic

💡 Happy Path Programming

Acai encourages Happy Path Programming (HPP): design your flows so inputs are validated up front, letting business logic remain clean and optimistic while error handling is centralised. No more nested conditionals or repeated try/catch blocks—just the straight path to the outcome you expect.

Need a fully typed experience? Explore the companion TypeScript package acai-ts.