This module manages "Learning Tracks"—curated, ordered lists of articles that guide a user through a specific topic or goal. When a user enters a learning track, they see a persistent banner or navigation element that helps them move sequentially through the guides.

The goal of this feature is to:

• Group Content: Logically group related articles into a sequence.
• Guide Users: Provide "Next" and "Previous" navigation context to keep users on the path.
• Track Progress: Visually indicate where the user is within the sequence (e.g., "Step 2 of 5").

Learning tracks are defined in YAML files located in data/learning-tracks.

• Structure: data/learning-tracks/<product>.yml
• Schema: Each file contains multiple tracks, where each track is defined as a top-level key with properties like:
  • title: Display title of the track.
  • description: Short summary.
  • guides: An ordered list of relative paths to the articles.
  • versions: (Optional) Which versions this track applies to.

The core logic for active tracking happens in src/learning-track/middleware/learning-track.ts.

• Trigger: It looks for the ?learn=<track_name> query parameter in the URL.
• Context Injection: If a valid track is found:
  • It calculates the current position (index) based on the current page path.
  • It resolves the prevGuide and nextGuide links.
  • It injects a currentLearningTrack object into req.context, which the UI components use to render the progress banner.

src/learning-track/lib/process-learning-tracks.ts is used (often by landing pages) to list available tracks.

• Rendering: It handles Liquid rendering for titles and descriptions.
• Versioning: It filters out tracks or specific guides that don't exist in the current documentation version.
• Translation Fallback: It ensures that if a translated track has broken data, it falls back to the English structure (guides list) while keeping translated titles if possible.

Add a track to data/learning-tracks/YOUR_PRODUCT.yml:

getting_started:
  title: "Getting Started with GitHub"
  description: "Learn the basics of repositories and commits."
  versions:
    fpt: '*'
    ghec: '*'
  guides:
    - /get-started/signing-up-for-github/signing-up-for-a-new-github-account
    - /get-started/first-steps-with-git/set-up-git

To start a user on a track, link to the first guide with the learn parameter (matching the track key defined in the YAML): /en/get-started/signing-up-for-github/signing-up-for-a-new-github-account?learn=getting_started

• learn=<track_name>: Identifies the active track.
• learnProduct=<product_name>: (Optional) Used when the track belongs to a different product than the current page context.

• data/learning-tracks: The source of truth for track definitions.
• src/content-render: Used to render Liquid within track titles and descriptions.
• src/versions: Used to filter tracks based on the current page version.

• Team: @github/docs-engineering
• Content Owners: The Writers and Content Strategists who define the tracks in the data directory.

• Query Param Persistence: The feature relies on the ?learn= parameter persisting as the user clicks links. If a user navigates away via a link that doesn't preserve query params (e.g., a standard markdown link outside the track navigation), they "fall off" the track.
• Translation Sync: Translators sometimes translate the guides list paths or break the YAML structure. The code has specific logic to force-use English guide lists to prevent 404s in translated versions.