Repository layout

.
├─ packages/                 # Core and all first-party extensions
│  ├─ core/                  # Editor core (@tiptap/core)
│  ├─ extension-*/           # Individual extensions
│  ├─ pm/                    # ProseMirror related internals and helpers
│  └─ ...                    # Shared utilities, framework bindings, etc.
├─ demos/                    # Vite app for live examples and colocated e2e specs
│  ├─ src/
│  │  ├─ react/              # React demos
│  │  └─ vue/                # Vue demos
│  └─ test/                  # Playwright helpers (getEditor, setEditorContent, ...)
├─ .changeset/               # Changesets for versioning and changelogs
└─ .github/                  # Workflows and GitHub-related config/docs

Notes:

All packages we publish or use live under packages/*.
The demos/ folder contains a Vite app. It automatically discovers and parses React and Vue demos so they appear in the UI without manual wiring.
Playwright e2e specs live alongside their demos as demos/src/**/index.spec.ts. playwright.config.ts auto-starts the Vite dev server on http://127.0.0.1:4080 — no need to launch it manually.