# effect

> Claude/Codex skill by [@browser-use](https://omgskills.com/library/browser-use/index.md) · 639 stars · Updated 2026-08-30

Work with Effect v4 / effect-smol TypeScript code in this repo

## Install

```sh
git clone https://github.com/browser-use/browsercode /tmp/browsercode && ln -s /tmp/browsercode/.opencode/skills/effect ~/.claude/skills/effect
```

## From README

Effect This codebase uses Effect for typed, composable TypeScript services, schemas, and workflows. Source Of Truth Use the current Effect v4 / effect-smol source, not memory or older Effect v2/v3 examples. If .opencode/references/effect-smol is missing, clone https://github.com/Effect-TS/effect-smol there. Do this in the project, not in the skill folder. Search .opencode/references/effect-smol for exact APIs, examples, tests, and naming patterns before answering or implementing Effect-specific code. Also inspect existing repo code for local house style before introducing new patterns. Prefer answers and implementations backed by specific source files or nearby repo examples. Guidelines Prefer current Effect v4 APIs and project-local patterns over old blog posts, examples, or package-memory guesses. Use Effect.gen(function () { ... }) for multi-step workflows. Use Effect.fn("Name") or Effect.fnUntraced(...) for named effects when adding reusable service methods or important workflows.

## Links

- HTML page: https://omgskills.com/skills/browser-use/browsercode/effect/
- GitHub: https://github.com/browser-use/browsercode
- Author: [@browser-use](https://omgskills.com/library/browser-use/index.md)

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