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atooni/mill-docusaurus2

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Simple Docusaurus runner for Mill

This plugin provides a mill module that allows to build the project web site using Docusaurus 2 as a static content generator. Even though it is possible to run Docusaurus without Mill MDoc, it is useful to use both plugins in combination to ensure the documentation contains valid code.

Parameters

docusaurusSourcess

A Sources parameter that points to the directory that contains all required docusaurus config files and static resources required to build the site.

These resources will be copied to the appropriate folder in mill's out directory where they will be merged with the compiledMdocs The result of this merge is used to build the site.

compiledMdocs

A Sources parameter pointing to the mdoc sources making up the contant of the site.

Targets

yarnInstall

Prepare a node_modules directory by running yarn install based on the content of the sources in docusaurusSources.

docusaurusBuild

Execute docusaurusBuild using the prpeared node_modules and the content of compiledMdocs.

Example usage

  //... Other imports if requried 

  // Add simple mdoc support for mill
  import $ivy.`de.wayofquality.blended::de.wayofquality.blended.mill.mdoc::0.0.1-1-fdff74`
  import de.wayofquality.mill.mdoc.MDocModule

  // It's convenient to keep the base project directory around
  val projectDir = build.millSourcePath

  object site extends DocusaurusModule with MDocModule {
    // Set the Scala version (required to invoke the proper compiler)
    override def scalaVersion = T(Deps.scalaVersion)
    // The md inputs live in the "docs" folder of the project 
    override def mdocSources = T.sources{ projectDir / "docs" }
    override def docusaurusSources = T.sources(
      projectDir / "website",
    )

    // If we are running docusaurus in watch mode we want to replace compiled 
    // mdoc files on the fly - this will NOT build md files for the site
    // Hence we must use `mdoc` once we finished editing.
    override def watchedMDocsDestination: T[Option[Path]] = T(Some(docusaurusBuild().path / "docs"))

    // This is where docusaurus will find the compiled mdocs to BUILD the site
    override def compiledMdocs: Sources = T.sources(mdoc().path)
}

With the example above, mill will create a complete docusaurus folder in out/site/docusaurusBuild/dest. Note, that the parameter watchedMDocsDestination is set to the docs folder within that directory.

As a result the docs folder will be contiously updated while the docs in $projectDir/docs are edited and an instance of mill is running the mdoc plugin in watch mode.

If a docusaurus instance is started from out/site/docusaurusBuild/dest in watch mode, documentation changes will be reflected in the browser almost immediately after saving them.

Tip

To work on the documentation it is best, to run run an instance of mill watching the md files in the docs directory, compiling them whenever changes have been saved. While doing this, point the watchedMDocsDestination parameter to (docusaurusBuild()/path) / "docs" and start docusaurus in watch mode.

Then the changes made in the md files will be reflected immediately in the browser.

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