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Industry-standard Jest testing setup for TypeScript projects with guidance for React Testing Library, ts-jest, snapshots, and coverage configuration.
Provides a complete, practical guide to using Jest with TypeScript: configuration (ts-jest), recommended tsconfig/test settings, test patterns (unit, integration, snapshots), mocking strategies, and coverage setup. Includes examples for React Testing Library, timer mocks, and migration tips from Vitest.
Use this skill when you need to add or standardise testing in a TypeScript codebase, especially React or Node projects. Ideal for onboarding tests, setting coverage thresholds for CI, migrating from Vitest, or adding snapshot and integration testing.
Best consumed by developer-focused code assistants (Claude Code, Copilot-style agents) or CI automation tooling that can edit project config and run tests.
Comprehensive Jest + TypeScript reference skill covering setup, mocking, React Testing Library integration, snapshot testing, coverage, and Vitest migration. No scripts to execute — purely a documentation/reference skill. Well-structured with progressive disclosure frontmatter and thorough code examples throughout.
Clean reference skill from mattnigh/skills_collection. No security concerns whatsoever — no scripts, no network calls, no destructive patterns. Solid quality but not exceptional — comprehensive coverage of Jest/TS patterns with good examples and pitfalls sections.
API Versioning
Guidance and templates for designing API versioning strategies, managing breaking changes, and running deprecation/migration workflows.
Supabase Expert
Comprehensive Supabase expert with access to 2,616 official documentation files covering PostgreSQL database, authentication, real-time subscriptions, storag...
Celery
Distributed task queue system for Python enabling asynchronous execution of background jobs, scheduled tasks, and workflows across multiple workers with Djan...
Test Orchestrator
Coordinate test strategy, automation, and quality gates across unit, integration, E2E and performance tests for a component or service.
Cloudflare D1 Migrations & Production Seeding
Manage Cloudflare D1 schema, create append-only migrations with Wrangler, and safely seed data across dev, staging, and production environments.
Bundle Optimization
Practical patterns to dramatically reduce frontend bundle size: icon manifests, named imports, dynamic imports, and CI size checks.
MoAI Claude Foundation Kit
Comprehensive authoring kit for Claude Code skills, including sub-agent templates, custom slash commands, and orchestration patterns.
Plugin Architecture Design Expert
Expertise in designing extensible plugin architectures using Registry patterns, dynamic loading, and Dependency Injection.
AEM Documentation Search
Efficiently search aem.live documentation and blog posts using a specialized script to find relevant features and technical guidance.
Software Quality Consultancy Practices
Framework for delivering effective software quality consultancy, from initial discovery to knowledge transfer and ROI measurement.
Monad Development
Practical developer skill for deploying and verifying smart contracts, configuring Foundry projects, and integrating frontends (viem/wagmi) on the Monad blockch
Starlark Dev
Create, debug, and test Kurtosis Starlark packages — write package structure, run dry-runs, and inspect plan execution for reliable orchestration.
Run Execute
Orchestrates execution of work items across modes (autopilot, confirm, validate) with scripted init/complete tooling, plan/test/report artifacts and strict gati
Uloop: Execute Dynamic Code
Run small C# snippets in the Unity Editor via the uloop CLI for editor automation tasks like prefab wiring, AddComponent flows, and scene edits—without writing
Alpha Forge Pre-Ship Quality Gates
Pre-merge quality gates for PRs that validate RNG determinism, forked URLs, runtime parameter ranges, and manifest synchronization to reduce review cycles.
OpenTestAI
Automated, high-confidence AI testing: bug detection, persona feedback, and prioritized test-case generation using many specialized tester profiles.
Blender Build-Go (bgo)
Automate build → remove → install → enable → launch cycle for Blender extensions or add-ons to speed up iteration and CI workflows.
Overnight — Autonomous Long-Running Coding
Orchestrates long-running coding goals: decomposes objectives into atomic tasks, dispatches isolated worktree workers, verifies acceptance criteria, and merges