Effect Software Library 

Better end-to-end software development and a robust IT infrastructure.

1 Effect-TS is a zero dependency set of
2 libraries to write highly productive
3 purely functional TypeScript at scale.
Logo of Effect, an open-source project
commercial companies
a growing community
active contributors

What is Effect-TS?

Effect-TS is an open-source library that allows you to build software in a purely functional manner.

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Dynamic system

A fully-fledged functional Effect system for typescript with a rich standard library.

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High Productivity

A typescript library inspired by scala's ZIO and Haskell's RIO architecture.

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Developed by Us

We have proudly shaped a library that continues to grow along with community contributions.

Effect-TS Community

Effect is a community for learning functional programming in TypeScript, Scala, and more.

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join community

A welcoming environment for beginner-to-expert developers.

Learn, teach and collaborate with other peers in the community!

Join or host live-coding events at Effect Time series.