vitest-testing-expert

Configures Vitest, migrates Jest tests, and sets up browser-mode testing for Vite projects.

Updated Oct 17, 2025

Search Tags:#vitest #performance optimization #monorepo #vite #browser testing #jest migration

Ready to run

npx skills add https://github.com/duynhne/monitoring --skill vitest-testing-expert-duynhne

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Please help me install this Agent Skill.
Skill: vitest-testing-expert
Source: https://github.com/duynhne/monitoring/tree/main/.agent/skills/vitest-expert
Command: npx skills add https://github.com/duynhne/monitoring --skill vitest-testing-expert-duynhne

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill solves Vitest configuration, Jest migration, and browser-mode testing for Vite projects.

Core Features & Use Cases

Vite Integration & Configuration: Guidance on configuring Vitest with Vite, including pool tuning, transform modes, and HMR integration.
Jest Migration & API Compatibility: Strategies for migrating tests, replacing mocks, and adapting to Vitest APIs.
Browser Mode Testing & Performance: Setup for real-browser testing with Playwright/WebDriverIO and performance optimizations for large test suites.
Workspace & Monorepo Support: Patterns for multi-project setups and shared configuration.
Diagnostics & Debugging: Tools and commands to diagnose environment, configuration, and performance issues.

Quick Start

Configure vitest.config.ts for a Vite project with React and run tests to verify migration and browser mode.

Frequently Asked Questions about vitest-testing-expert

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I migrate Jest tests to Vitest in a Vite project?▼

Migrate Jest tests to Vitest by adapting mock APIs, updating configuration files, and replacing Jest-specific globals with Vitest APIs for compatibility within your Vite project structure.

How do I configure Vitest browser mode with Playwright for real-browser testing?▼

Configure Vitest browser mode by integrating Playwright or WebDriverIO to execute real-browser tests, leveraging Vite's transform modes to run tests directly in browser environments.

What is the best way to optimize Vitest performance for large monorepo test suites?▼

Optimize Vitest performance in monorepos by tuning pool options, adjusting transform modes, and using import.meta.vitest to manage large test suites across multiple workspace projects.

Can I use Vitest for multi-project testing in a monorepo setup?▼

Vitest supports monorepo testing by utilizing workspace configurations to define multi-project setups, allowing shared configurations and isolated test runs across different Vite apps.

Does Vitest work with React and Vue frameworks in the same Vite application?▼

Vitest works with React, Vue, and other frameworks within Vite-based apps, providing configuration patterns and API guidance to run tests across mixed framework environments.

Why is my Vitest configuration not picking up HMR integration and pool options correctly?▼

Vitest configuration issues with HMR integration and pool options stem from incorrect config file setups; use Vitest diagnostics tools and commands to debug environment and performance bottlenecks.