Effect TypeScript Standard Library for Production Applications

Effect is a comprehensive TypeScript standard library that provides structured concurrency, typed errors, dependency injection, schema validation, and observability — replacing dozens of individual packages with one cohesive, type-safe framework for building production-grade applications.

Installation

Use the upstream install or setup path that matches your environment:

• pnpm install # Requires pnpm version 10.4.0
• Make the changes you propose to the codebase. If your changes impact functionality, please add corresponding tests to validate your updates.
• If you encounter style issues, use pnpm lint-fix to automatically correct some of these.
• pnpm changeset

Requirements and caveats from upstream:

• | @effect/platform-node | Platform utilities for Node.js | README |
• | @effect/platform-node-shared | Shared utilities for Node.js | README |
• | @effect/sql-sqlite-node | An @effect/sql implementation using the better-sqlite3 library. | README |

Basic usage or getting-started notes:

• For detailed information and usage examples, visit the Effect website.

• Run the following commands to ensure your changes do not introduce any issues:

• pnpm test-types: Run type-level tests. Tests are written using tstyche.

• Source: https://github.com/Effect-TS/effect

• Extracted from upstream docs: https://raw.githubusercontent.com/Effect-TS/effect/HEAD/README.md

Source

• Agent Skill Exchange