Cause & Effect

Effectifying OpenCode #8

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Kit Langton joins the podcast to talk about Effect, OpenCode, and what it takes to migrate a large TypeScript codebase to Effect. Enjoy a very Kit episode, technical, funny, opinionated, and full of love for effect systems.


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Mentioned in the video:

- effect.solutions

- effect.institute

- hex.kitlangton.com


Effect is an ecosystem of tools to build production-grade software in TypeScript.

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  • Community & support
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#Effect #TypeScript #OpenCode #softwareDevelopment

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  • (00:00) - Episode highlight: why effect systems matter
  • (00:43) - Meet Kit Langton
  • (03:49) - Effect Institute, Visual Effect, and interactive learning
  • (13:15) - Bringing Effect into OpenCode
  • (19:18) - Schema, branded IDs, and safer types
  • (27:35) - Effect services, layers, and architecture
  • (32:28) - Testing LLM workflows with Effect
  • (46:24) - Incremental adoption in a real TypeScript codebase
  • (50:44) - effect.solutions and agent-ready patterns
  • (01:00:36) - Layers, dependencies, observability, and telemetry
  • (01:16:58) - AI-first coding workflows
  • (01:34:35) - Using Effect v4 in OpenCode
  • (01:36:56) - What’s next for OpenCode
  • (01:42:33) - Closing thoughts
    • ...more
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    Cause & EffectBy Effectful Technologies Inc.