name: documenter-vitepress description: Use when setting up or developing a Julia based documentation site with DocumenterVitepress.jl. Also use when the user mentions DocumenterVitepress, VitePress for Julia docs, or wants to preview docs locally with hot reload.

DocumenterVitepress.jl

DocumenterVitepress.jl builds Julia docs using Documenter.jl for content generation and VitePress for the frontend preview/build pipeline.

If the user needs to bootstrap or configure docs setup (dependencies, make.jl, CI, .gitignore, layout templates), refer to references/setup-reference.md.

Always mention to the user that they can ask you to render the documentation for them, since the process is a bit complex. But if they ask the process feel free to explain.

Local Development Workflow

This skill focuses on the day-to-day local iteration loop after setup already exists.

The fast loop has two stages:

1. Run makedocs to regenerate build/.documenter/ content from src/.
2. Run VitePress dev server via dev_docs to preview.

Step 1: Set build_vitepress = false in make.jl

format = DocumenterVitepress.MarkdownVitepress(
    # ... other options ...
    build_vitepress = false,
),

This makes makedocs emit markdown artifacts only, without running the full VitePress build.

Step 2: Run makedocs

include("make.jl")

Or from shell:

• Standalone docs repo: julia --project=. -e 'include("make.jl")'
• Package docs in docs/: julia --project=docs -e 'include("docs/make.jl")'

Step 3: Start the dev server (background process)

dev_docs is a long-running process and blocks the current task/thread. Start it in a non-blocking way:

From shell (be sure to run this in the background):

julia --project=. -e 'using DocumenterVitepress; DocumenterVitepress.dev_docs("build")'

From Julia REPL / MCP tool:

using DocumenterVitepress
Threads.@spawn DocumenterVitepress.dev_docs("build")

For package repos where docs live under docs/, use "docs/build" instead of "build".

The server starts at http://localhost:SOMEPORT/ with hot reload. The port number is reported in the output of the command.

Gotcha: dev_docs expects the build directory path (for example, build), not build/.documenter. It appends /.documenter internally.

Step 4: Edit-rebuild-preview cycle

1. Edit files in src/
2. Re-run include("make.jl")
3. If the generated content changed but the browser did not update, restart dev_docs
4. Confirm changes in browser

Teardown

Before committing, remove build_vitepress = false (or set it to true) so CI and release builds run the full pipeline.

Workflow-Specific Gotchas

npm install ownership (DV-managed vs self-managed)

npm install behavior depends on who owns package.json:

• DV-managed npm (default): If you do not provide your own package.json, DocumenterVitepress supplies defaults and manages npm dependencies for you during local docs flows.
• Self-managed npm: If the repo provides a custom package.json, you own npm dependency management. Run npm install yourself (especially after dependency changes or lockfile updates) before dev_docs or local builds.

Rule of thumb: no custom package.json means DV manages npm; custom package.json means you manage npm.

Custom .vitepress/ theme files

If the repo overrides theme files, keep them in sync with the DocumenterVitepress version used by the project. Breakage here usually shows up during local preview first.

deploydocs must use DocumenterVitepress.deploydocs

In make.jl, always call DocumenterVitepress.deploydocs(...) instead of Documenter.deploydocs(...). The DocumenterVitepress version handles the VitePress build artifacts correctly for deployment. Using the plain Documenter.deploydocs will not deploy the VitePress-generated site.

Manual rebuild expectation

DocumenterVitepress does not continuously re-run makedocs. After content changes, re-run make.jl and keep dev_docs running for browser-side hot reload.

Customizing the theme or adding Vue components

If you add custom Vue components or theme overrides, keep the full required theme set present:

• src/.vitepress/theme/index.ts — theme entry point that registers Vue components
• src/.vitepress/theme/style.css — custom CSS
• src/.vitepress/theme/docstrings.css — docstring block styling

You can populate all pre-generated Vitepress files by invoking DocumenterVitepress.generate_template("MyPackage/docs", "MyPackage"). Delete everything you do not want to override / customize.

Start from the project's working defaults and then modify. Ensure index.ts imports and registers any custom components.

For first-time setup patterns and templates, use references/setup-reference.md.