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James Russo
c8acd8abd8
## What PR 4/17 of the catalog system rollout. **Single clean cut** — the old flag is gone, replaced by `--example`. Alias changes from `-t` to `-e`. Stacks on #254. - Rename `--template` → `--example` (alias `-e`) on `hyperframes init` - Accept `--template` as a recognized-but-errored flag so users get a clear rename hint instead of citty silently ignoring the flag and producing a blank project - Update all user-visible strings that referenced "template" as a user-facing concept in the init flow (picker prompt, step comments, offline-fallback suggestion) - New `init.test.ts` covering both the success case (`--example` scaffolds) and the error case (`--template` exits 1 with rename hint) Design doc: [Hyperframes Catalog System](https://www.notion.so/heygen/Hyperframes-Catalog-System-Design-Plan-341449792c69813f899dcd53b4c0383a). ## ⚠️ Breaking change `--template` is no longer accepted. Example: ```bash # before npx hyperframes init my-video --template warm-grain # after npx hyperframes init my-video --example warm-grain ``` Users who still type the old flag will see: ``` The --template flag was renamed to --example. Example: npx hyperframes init my-video --example warm-grain ``` and the command exits with code 1. This is **user guidance, not backwards compat** — the old flag's behavior is fully gone. ## Docs (bundled per the tracker principle) - `docs/templates.mdx` — every `--template` reference - `docs/quickstart.mdx` — agent-mode and video-mode examples - `docs/packages/cli.mdx` — prose, `--help` flag table, `-e` alias - `packages/cli/src/docs/templates.md` — CLI-embedded help topic - `README.md` and `CONTRIBUTING.md` — not affected (no flag references) User-facing renames of the `templates.mdx` page title, nav entry, and URL route are deferred to PR 11 (catalog discoverability UX) as planned. ## Why 1. **"examples"** matches shadcn + Remotion convention for full-project scaffolds and frees the word "template" for future parameterization work (string templating, placeholder substitution) 2. Once `hyperframes add` lands in PR 5, "template" vs "block" vs "component" would be three subtly different concepts sharing one word — renaming the old one to "example" makes the taxonomy self-explaining ## How - **citty silently ignores unknown flags.** Naively removing `--template` would cause `hyperframes init my-video --template warm-grain` to silently fall through and scaffold a blank project. So `--template` stays declared in the args schema, but its run handler immediately errors with a rename hint and exits 1 - **Internal names unchanged** — `templateId` local variables, `getStaticTemplateDir` function, `BUNDLED_TEMPLATES` constant. They're implementation details; their rename is scheduled for PR 5 when the compat shims in `packages/cli/src/templates/` are fully removed alongside the `init` refactor ## Test plan - [x] `bun run test` in `packages/cli`: **72 passed** (was 70 on #254, +2 new `init.test.ts` cases). Same 4 pre-existing failures unchanged - [x] **New unit tests** in `init.test.ts`: - `--example blank` non-interactive: exits 0, writes `index.html` to the target dir - `--template blank` non-interactive: exits non-zero, stderr contains the rename hint + corrected command line, target dir is **not** created - [x] **Manual smoke:** - `npx hyperframes init /tmp/x --example blank` → "Created /tmp/x/" - `npx hyperframes init /tmp/y --template blank` → "The --template flag was renamed to --example..." exit=1 - [x] `bunx oxfmt --check` + `bunx oxlint` on changed files: clean - [x] Pre-commit typecheck (core + studio): clean ## Incidental fix Resolver test regression from PR 3's simplify follow-up: `loadAllItems`' warning-path test was still spying on `console.warn` after the `onWarn` callback refactor. Now uses the callback directly. ## Stacks on #254 — base branch. When #254 merges, this rebases onto `main`. ## Next in stack PR 5 — `feat(cli): add command + hyperframes.json`. The big UX PR where: - `init.ts` gets fully ported to the new registry resolver - Compat shims in `packages/cli/src/templates/` are removed - Users gain the `add` verb for installing blocks and components into existing projects - `hyperframes.json` project-config file lands 🤖 Generated with [Claude Code](https://claude.com/claude-code)
Hyperframes
Write HTML. Render video. Built for agents.
Hyperframes is an open-source video rendering framework that lets you create, preview, and render HTML-based video compositions — with first-class support for AI agents via MCP.
Why Hyperframes?
- HTML-native — AI agents already speak HTML. No React required.
- Frame Adapter pattern — bring your own animation runtime (GSAP, Lottie, CSS, Three.js).
- Deterministic rendering — same input = identical output. Built for automated pipelines.
- AI-first design — not a bolted-on afterthought.
Quick Start
npx hyperframes init my-video
cd my-video
Then open the project with your AI coding agent (Claude Code, Cursor, etc.) — it has HyperFrames skills installed and knows how to create and edit compositions.
npx hyperframes preview # preview in browser (live reload)
npx hyperframes render # render to MP4
Requirements: Node.js >= 22, FFmpeg
Documentation
Full documentation at hyperframes.heygen.com — start with the Quickstart, then explore guides, concepts, API reference, and package docs.
How It Works
Define your video as HTML with data attributes:
<div id="stage" data-composition-id="my-video" data-start="0" data-width="1920" data-height="1080">
<video
id="clip-1"
data-start="0"
data-duration="5"
data-track="0"
src="intro.mp4"
muted
playsinline
></video>
<img id="overlay" data-start="2" data-duration="3" data-track="1" src="logo.png" />
<audio
id="bg-music"
data-start="0"
data-duration="9"
data-track="2"
data-volume="0.5"
src="music.wav"
></audio>
</div>
Preview instantly in the browser. Render to MP4 locally. Let AI agents compose videos using tools they already understand.
Packages
| Package | Description |
|---|---|
hyperframes |
CLI — create, preview, lint, and render compositions |
@hyperframes/core |
Types, parsers, generators, linter, runtime, frame adapters |
@hyperframes/engine |
Seekable page-to-video capture engine (Puppeteer + FFmpeg) |
@hyperframes/producer |
Full rendering pipeline (capture + encode + audio mix) |
@hyperframes/studio |
Browser-based composition editor UI |
AI Agent Skills
HyperFrames ships skills that teach AI coding agents (Claude Code, Gemini CLI, Codex, Cursor) how to write correct compositions and GSAP animations. Use these instead of writing from scratch — they encode framework-specific patterns that generic docs don't cover.
Install via CLI (recommended)
# Install all skills (HyperFrames + GSAP) — runs automatically during `hyperframes init`
npx hyperframes skills
# Or install to a specific agent
npx hyperframes skills --claude
npx hyperframes skills --cursor
Or via npx skills add
# HyperFrames skills (hyperframes-compose, hyperframes-captions)
npx skills add heygen-com/hyperframes
# GSAP skills (gsap-core, gsap-timeline, gsap-scrolltrigger, gsap-plugins, gsap-performance, gsap-utils, gsap-react, gsap-frameworks)
npx skills add greensock/gsap-skills
Installed Skills
| Source | Skills | What they teach |
|---|---|---|
| HyperFrames | hyperframes-compose, hyperframes-captions |
HTML composition structure, class="clip" rules, data-* attributes, timeline registration, rendering constraints |
| GSAP | gsap-core, gsap-timeline, gsap-performance, gsap-plugins, gsap-scrolltrigger, gsap-utils, gsap-react, gsap-frameworks |
Core API, timeline sequencing, ScrollTrigger, plugin usage, performance best practices |
In Claude Code, invoke with /hyperframes-compose, /hyperframes-captions, /gsap-core, etc.
Contributing
See CONTRIBUTING.md for guidelines on how to contribute.
License
See LICENSE for details.