Miguel Ángel
c1c70f44bd
* fix(cli): signal only processes the OS says own the port `/__hyperframes_config` is unauthenticated and the PID it reports is what `--stop` and `--kill-all` send signals to, so any local process answering on a scanned port could name an arbitrary PID and have the CLI kill it. Reproduced with a twenty-line HTTP server on a scanned port self-reporting an unrelated PID: before this, `--kill-all` killed that process; after it, the process survives and only the real listener is stopped. The listening PID now comes from the OS — `lsof`, and `netstat` on Windows, where the lookup was previously unavailable and the self-reported value was taken on trust. The response's own PID is used only where the OS lookup fails, which is also the only case where it is unfalsifiable. Orphan cleanup moves to the last step before a launch. It reaches outside the process and kills other people's PIDs, so it must not run for an invocation that turns out to be a validation error and never starts anything. * fix(cli): fail closed when the OS cannot confirm who owns a port Review follow-up. The two halves of this change picked opposite directions for the same condition. `isProcessDescendant` fails closed by design; `activeServerOnPort` fell back to the self-reported PID whenever the OS lookup came back empty — and that is not only "unsupported platform". `lsof` may be absent (the default on many slim images), may time out, or may not see a socket owned by another user. On such a machine every scanned port silently reverted to pre-change behaviour, with nothing said. Provenance is now part of the type rather than a convention: `ActiveServer` carries `pidSource`, so a caller cannot mistake a self-report for the kernel's answer. `--kill-all` requires `"os"` and skips the rest, naming the ports it left alone and why. That is the deliberate trade — a blind sweep of a port range has no evidence beyond an unauthenticated response, so an unconfirmed PID must not be signalled. Managed previews are unaffected: they stop through their session record, which proves ownership by process birth identity. The fallback branch — the one with the security consequence — now has the coverage it lacked, via an injected lookup matching the seam `testPortOnAllHosts` and `isProcessDescendant` already use, including a live process that survives because nothing confirmed it owns the socket. Also state that `killProcessTree` honours `signal` on POSIX only: Windows always passes `/F`, deliberately, since taskkill without it posts WM_CLOSE that a console process may ignore. The caller-side comment claiming Windows cleanup is a no-op described the code before this change and now says the opposite.
hyperframes
CLI for creating, previewing, and rendering HTML video compositions.
Install
npm install -g hyperframes
Or use directly with npx:
npx hyperframes <command>
Requirements: Node.js >= 22, FFmpeg
Commands
init
Scaffold a new Hyperframes project from a template:
npx hyperframes init my-video
cd my-video
preview
Start the live preview studio in your browser:
npx hyperframes preview
# Studio running at http://localhost:3002
npx hyperframes preview --port 4567
render
Render a composition to MP4. Run from the project directory; the positional
argument is the project directory (not a file), so render the project's
index.html directly, or point at a specific composition file with -c:
npx hyperframes render -o output.mp4
npx hyperframes render -c ./my-composition.html -o output.mp4
lint
Validate your Hyperframes HTML:
npx hyperframes lint ./my-composition
npx hyperframes lint ./my-composition --json # JSON output for CI/tooling
npx hyperframes lint ./my-composition --verbose # Include info-level findings
By default only errors and warnings are shown. Use --verbose to also display informational findings (e.g., external script dependency notices). Use --json for machine-readable output with errorCount, warningCount, infoCount, and a findings array.
compositions
List compositions found in the current project:
npx hyperframes compositions
benchmark
Run rendering benchmarks:
npx hyperframes benchmark ./my-composition.html
doctor
Check your environment for required dependencies (Chrome, FFmpeg, Node.js):
npx hyperframes doctor
browser
Manage the bundled Chrome/Chromium installation:
npx hyperframes browser
info
Print version and environment info:
npx hyperframes info
docs
Open the documentation in your browser:
npx hyperframes docs
upgrade
Check for updates and show upgrade instructions:
npx hyperframes upgrade
npx hyperframes upgrade --check --json # machine-readable for agents
Documentation
Full documentation: hyperframes.heygen.com/packages/cli
Related packages
@hyperframes/core— types, parsers, frame adapters@hyperframes/engine— rendering engine@hyperframes/producer— render pipeline@hyperframes/studio— composition editor UI