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vite-impl-ssr

Configure Vite SSR externals, manifests, and dev/prod workflows.

3|Updated Mar 19, 2026
Search Tags:#vite#express#ssr#build-config#server-side-rendering#ssrLoadModule
One-click install
npx skills add https://github.com/Impertio-Studio/Vite-Claude-Skill-Package --skill vite-impl-ssr-impertio-studio
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: vite-impl-ssr
Source: https://github.com/Impertio-Studio/Vite-Claude-Skill-Package/tree/main/skills/source/vite-impl/vite-impl-ssr
Command: npx skills add https://github.com/Impertio-Studio/Vite-Claude-Skill-Package --skill vite-impl-ssr-impertio-studio

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Implementing SSR with Vite can be tricky due to externals handling, SSR tooling, and consistent dev-to-prod workflows; this skill clarifies patterns and provides actionable guidance to avoid common pitfalls.

Core Features & Use Cases

  • Guidance on configuring ssr.noExternal, ssr.external, and ssr.target for correct SSR builds
  • Step-by-step dev workflow with Express middleware and Vite's ssrLoadModule and ssrFixStacktrace
  • Production build guidance using SSR manifest and import.meta.env.SSR awareness
  • Real-world scenarios including server entry points, middleware-based servers, and hydration debugging

Quick Start

Start by wiring a custom Express server with Vite middleware and an SSR entry to render pages.

Frequently Asked Questions about vite-impl-ssr

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

FAQPage Schema
How do I configure Vite SSR with a custom Express server?▼

Vite SSR with an Express server uses middleware mode and server entry points loaded via ssrLoadModule. You wire Vite middleware into Express to render pages, applying ssrFixStacktrace to correct error stack traces during development.

What is the difference between ssr.external and ssr.noExternal in Vite?▼

Vite SSR externals configuration dictates how dependencies are processed during the build. ssr.external excludes packages from the server build, while ssr.noExternal forces specific dependencies to be bundled into the SSR output for proper rendering.

How do I build a Vite SSR application for production?▼

Production builds for Vite SSR require generating an SSR manifest and executing proper build steps. The manifest maps modules for rendering, while using import.meta.env.SSR ensures code executes correctly within the server-side rendering environment.

Why do I need an SSR manifest when using Vite?▼

An SSR manifest in Vite is needed to link production assets to server-rendered HTML. It maps generated scripts and stylesheets, ensuring proper hydration and avoiding mismatched modules between the server entry and client build.

How do I debug stack traces in Vite SSR dev mode?▼

Debugging Vite SSR dev mode involves applying ssrFixStacktrace to caught errors. This function adjusts the stack trace to point to original source code instead of transformed modules, making development errors easier to trace.

When should I use import.meta.env.SSR in my Vite project?▼

Use import.meta.env.SSR in a Vite project to conditionally execute server-only code. It allows branching logic between client and server environments, ensuring proper hydration debugging and consistent dev-to-prod workflows.

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