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tessera-learn

v0.5.0

Published

LMS tracking runtime for interactive learning content. One adapter layer (SCORM 1.2, SCORM 2004 4th Edition, cmi5, static Web), your choice of components.

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Links

Git

Maintainers

redmonddredmondd

Keywords

sveltesveltekitvitelmsscormscorm-1.2scorm-2004cmi5xapielearningeducationcourse

Readme

tessera-learn

LMS tracking runtime for interactive learning content. One adapter layer (SCORM 1.2, SCORM 2004 4th Edition, cmi5, xAPI 1.0.3, static Web), your choice of components.

Tessera is a toolkit for building interactive online courses, designed for AI-assisted authoring: pages are .svelte files, the runtime locks the LMS data contract (tracking, completion, scoring, persistence), and an AI agent working in the workspace follows the conventions in AGENTS.md to write pages and components. This package is the runtime; you typically don't depend on it directly — create-tessera scaffolds a workspace that pins it for you. A workspace is one package that holds many courses under courses/<name>/ and a shared/ design system imported as $shared.

Install

You probably don't want to install this package directly. Use the scaffolder:

pnpm create tessera@latest my-course

That creates a workspace with Tessera wired up, a seed course, and a root AGENTS.md that points to the authoring guide. Add more courses with pnpm tessera new <name>.

What's included

  • Hooks (tessera-learn): useQuestion, useQuiz, useNavigation, useProgress, useCompletion, usePersistence, useXAPI.
  • Vite plugin (tessera-learn/plugin): tesseraPlugin() — wires page/layout discovery, the LMS adapter, the $shared alias, and the export pipeline. The tessera CLI (new/dev/export/validate/a11y/check) runs Vite with this plugin for you, so scaffolded workspaces need no vite.config.js.
  • Built-in components (tessera-learn): Callout, Image, Audio, Video, Accordion / AccordionItem, Carousel / CarouselSlide, RevealModal, Quiz, MultipleChoice, FillInTheBlank, Matching, Sorting, DefaultLayout.
  • LMS adapters: SCORM 1.2, SCORM 2004 4th Edition, cmi5, xAPI 1.0.3 ("Tin Can"), static Web — selected via course.config.js export.standard, or overridden per build with tessera export --standard <value>.
  • Accessibility checks: static rules (alt text, media titles/captions, heading order, contrast, <html lang>) run inside validation and the build with zero extra dependencies; an opt-in runtime audit (tessera a11y, with playwright + @axe-core/playwright as optional peers) renders every page and gates on axe-core violations.

See AGENTS.md for usage, signatures, and authoring conventions.

Documentation

The full authoring guide ships with this package at node_modules/tessera-learn/AGENTS.md — scaffolded projects get a small root AGENTS.md that points to it — and is on GitHub.

License

MIT