Repository navigation
render: --variables-file (and --variables <path>) fails with "io.readFile is not a function" since 0.8.212 #6830
Description
Describe the bug
hyperframes render --variables-file <file> fails before rendering on every version from 0.8.212 to 0.8.221 (latest at the time of writing). The same failure hits --variables <path> and --variables - (stdin). Inline JSON (--variables '{"title":"x"}') and --batch <file> still work.
Minimal reproduction
Any project with data-composition-variables:
echo '{}' > /tmp/vars.json
npx -y [email protected] render . --variables-file /tmp/vars.json -o /tmp/out.mp4✗ Could not read the variables JSON
/tmp/vars.json: io.readFile is not a function
| Version | --variables-file |
|---|---|
| 0.8.210, 0.8.211 | reads the file, render proceeds |
| 0.8.212, 0.8.213, 0.8.216, 0.8.221 | io.readFile is not a function |
Linux (WSL2 Ubuntu), Node 24.19.0.
Cause (from the published dist of 0.8.221)
resolveVariablesArg(inline, filePath) calls parseVariablesArg(inline, filePath) with no readFile / readStdin, so it passes { readFile: undefined, readStdin: undefined } to readJsonFlagText:
function readJsonFlagText(value, partialIo = {}) {
const io = { ...defaultIO, ...partialIo }; // undefined overrides the defaults
...
return trimmed === "-" ? io.readStdin() : io.readFile(value);An object spread copies keys whose value is undefined, so io.readFile is undefined.
Steps to reproduce
echo '{}' > /tmp/vars.json
npx -y [email protected] render . --variables-file /tmp/vars.json -o /tmp/out.mp4Expected behavior
A rendered mp4 using the variables file is created
Actual behavior
◆ Rendering variables-fixture → C:\node_projects\hftemptest\out.mp4
30fps · standard · auto workers (16 cores detected)
GPU: browser GPU (auto-detect)
✗ Could not read the variables JSON
vars.json: io.readFile is not a function
Environment
The failed checks (unzip, FFmpeg, optional tools) are unrelated: the error is thrown while the flag is parsed, before any browser or encoder is touched.
hyperframes doctor
✓ Version 0.8.221 (latest)
✓ Node.js v24.19.0 (linux x64)
✓ CPU 16 cores · Intel(R) Core(TM) Ultra 7 265H
✓ Memory 15.6 GB total · 6.0 GB available
✓ Disk 925.5 GB free
✓ Frames cache /tmp/hyperframes-extract-cache-1000 · 925.5 GB free at /tmp · default
✗ Archive extractor Not found
✓ Settings lock Not locked
✓ /dev/shm 7995 MB
✓ Environment WSL · non-TTY
✗ whisper-cpp Not found (optional — needed for transcription)
✗ TTS (Kokoro) Not installed (optional — local voice fallback)
✗ BGM (MusicGen) Not installed (optional — local music fallback)
✓ onnxruntime-node Not installed (installs on first use)
✓ @google/genai Not installed (installs on first use)
✗ FFmpeg FFmpeg is required to encode video.
✗ FFprobe FFprobe is required to probe media assets.
✓ Chrome cache: ~/.cache/hyperframes/chrome/chrome-headless-shell/linux-152.0.7977.30/...
✓ Docker Docker version 29.6.2, build dfc4efb
✗ Docker running Not runningAdditional context
No response
Activity