* fix(cli): stop dropping queued telemetry when process.exit races the final flush Two exit-path defects introduced by the 0.7.65 process-lifecycle refactor: 1. The 'exit' handler returned early once finalizeCli had started, which also skipped the flushSync() fallback. When an agent-pipe EPIPE killed the process mid-flush (the NORMAL teardown under Claude Code / Codex), the still-queued render_complete was silently dropped — fleet delivery fell from ~90% (0.7.55-0.7.64) to ~35%. flushSync() is now unconditional: empty queue is a no-op, event uuids dedupe re-sends. 2. The EPIPE handlers set commandFailed unconditionally, so every piped successful render scored success:false in cli_command_result (fleet success rate collapsed 89% -> 5-25%). EPIPE now only marks failure when the pipe died before the render artifact was validated, matching the existing isRenderSucceeded() exemption on the uncaughtException path. Regression tests cover both: flushSync-after-finalize, and EPIPE before/after artifact validation. * fix(cli): don't score a validated render as failed due to pre-artifact noise Review follow-up: commandFailed can be set by noise that precedes artifact validation — a stray unhandledRejection mid-render, or an EPIPE firing before markRenderSucceeded on a run that still completes. Once the artifact validates, that earlier noise must not flip the run's cli_command_result to success:false. Genuine failures keep a non-zero exit code and are still caught by the exitCode check. Extracted commandSucceededForTelemetry() and applied it at both tracking sites (finalizeCli and the exit handler), with a regression test. * test(cli): pin the production-reachable producer of the stale-failure override Review note: the pre-artifact-noise test drives the scenario with an EPIPE, which only reaches 'render validates afterwards' because process.exit is mocked — that sequence can't occur in production. Add a test for the reachable producer: an unhandledRejection before validation (the handler deliberately does not exit), followed by a validated render, must score success:true at exit code 0. Verified red on the pre-override cli.ts.
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