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Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.
npx agentmarket install skill/zaniluca-effect-vitest-tests
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About
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Permissions
What this skill can do and what it asks for, from its SKILL.md. Checked Oct 25, 2026.
- Tools
- No tools found
- Secrets
- None asked for
- Install scripts
- None found
Network hosts it talks to 1
codeload.github.com· found in install command
Files it touches
~/.claude/skills/effect-vitest-tests
What's inside
- Skill name
effect-vitest-tests- Description
- Keep Effect tests deterministic and Effect-aware. Use when lint flags direct vitest imports or conditional assertions, or when tests need layers, TestClock, scoped resources, or Effect programs.
- License
- MIT
- Instructions
- 24 lines in SKILL.md · view on GitHub
Files (1)
- SKILL.md
SKILL.md (first lines)
# Effect Vitest Tests
Import test APIs from `@effect/vitest`. Use `it.effect` for normal Effect
tests and `it.live` only when live runtime services are required.
```ts
import { describe, expect, it, layer } from "@effect/vitest";
```
Use `layer(...)` when several tests share a layer. Use separate `it.layer(...)`
blocks when each test needs an isolated layer instance. Avoid repeatedly
calling `Effect.provide` inside test bodies.
`it.effect` provides deterministic test services such as `TestClock`. Advance
time with `TestClock.adjust` rather than sleeping in tests.
Do not hide assertions behind `if`, ternaries, logical operators, or switches.
Assert the complete discriminated result or split the cases into separate
tests.
Test behavior and public contracts. Prefer real in-memory HTTP handlers or
Effect test layers over patching globals.From zaniluca/effect-rules, MIT.
More from zaniluca/effect-rules
- 0.524score
effect-client-boundaries
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Wrap callback- and Promise-based third-party clients behind Effect services.
SkillBFreshness: BClaude Code +9 - 0.524score
effect-http-client-boundary
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Route HTTP through Effect HttpClient instead of ambient fetch.
SkillBFreshness: BClaude Code +9 - 0.524score
effect-httpapi-testing
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Test Effect HttpApi applications end to end with real layer composition and Web Request/Response handling.
SkillBFreshness: BClaude Code +9 - 0.524score
effect-rules-authoring
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Add or refine an Oxlint JavaScript rule for Effect without coupling it to one repository.
SkillBFreshness: BClaude Code +9 - 0.524score
effect-schema-boundaries
zaniluca
Normalize unknown data with Effect Schema.
SkillBFreshness: BClaude Code +9 - 0.524score
effect-schema-inferred-types
zaniluca
Remove TypeScript object shapes duplicated next to Effect Schemas.
SkillBFreshness: BClaude Code +9 - 0.524score
effect-typed-errors
zaniluca
Fix JavaScript-style error handling in Effect code.
SkillBFreshness: BClaude Code +9 - 0.513score
effect-match
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Replace manual tag checks, switch statements, and Match.orElse fallbacks with exhaustive Effect Match expressions.
SkillBFreshness: BClaude Code +9
Signals
- Stars
- 0
- Forks
- 0
- Open issues
- 0
- Last commit (this folder)
- Aug 8, 2026 (2 months ago)
- Last release
- Aug 30, 2026 (2 months ago)
From GitHub (fetched Oct 24, 2026).
Details
- License
- MIT
- Repository
- github.com/zaniluca/effect-rules
- First seen
- Oct 24, 2026
- Last checked
- Oct 24, 2026
- Source
- GitHubgithub-graphql
More from zaniluca
- 0.524score
effect-client-boundaries
zaniluca
Wrap callback- and Promise-based third-party clients behind Effect services.
SkillBFreshness: BClaude Code +9 - 0.524score
effect-http-client-boundary
zaniluca
Route HTTP through Effect HttpClient instead of ambient fetch.
SkillBFreshness: BClaude Code +9 - 0.524score
effect-httpapi-testing
zaniluca
Test Effect HttpApi applications end to end with real layer composition and Web Request/Response handling.
SkillBFreshness: BClaude Code +9 - 0.524score
effect-rules-authoring
zaniluca
Add or refine an Oxlint JavaScript rule for Effect without coupling it to one repository.
SkillBFreshness: BClaude Code +9 - 0.524score
effect-schema-boundaries
zaniluca
Normalize unknown data with Effect Schema.
SkillBFreshness: BClaude Code +9 - 0.524score
effect-schema-inferred-types
zaniluca
Remove TypeScript object shapes duplicated next to Effect Schemas.
SkillBFreshness: BClaude Code +9
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Cite this page
effect-vitest-tests skill. Agent Mart. https://agentmart.dev/skills/zaniluca-effect-vitest-tests (last updated 2026-10-24)