ukimsanov
6e3cc75883
Real-AI-test ran capture against heygen.com twice and both runs died with:
✗ Capture failed: Unexpected token '^' at the "Extracting design tokens" stage.
And, after the first regex fix, again with:
⚠ Asset cataloging failed (no images will be downloaded):
SyntaxError: Unexpected token '^'
Root cause introduced by my commit 02f95f95 (broadening isLogo detection).
In two separate places I added a regex to detect "site-root href" anchors:
/^https?:\/\/[^/]+\/?$/.test(href)
The regex is correct when written in a plain `.ts` file. But the
capture pipeline ships both files as JavaScript strings INSIDE template
literals that get handed to `page.evaluate()`:
const EXTRACT_SCRIPT = `(() => { ... ${regex} ... })()`
const assets = await page.evaluate(`(() => { ... ${regex} ... })()`)
JavaScript template literals consume `\/` as just `/` (the backslash
is not preserved for any character that isn't a recognized escape).
So by the time the string reaches puppeteer's V8, the regex has become
/^https?:////[^/]+//?$/
— and `//` reads as a JS line comment, severing the regex at `[^` and
producing the "Unexpected token '^'" parse error.
The fix is to double-escape so the template literal yields the intended
single backslash:
/^https?:\\/\\/[^/]+\\/?$/.test(href)
^^ ^^ ^^
User applied the fix on the fly during their build to unstick capture
(I had to delete + re-run capture twice). This commit makes the fix
permanent in both locations.
Verified: smoke-tested via `node -e \`var s = `var test = /^https?:\\\\/\\\\/[^/]+\\\\/?$/.test('http://example.com/');`; eval(s);\`` — the template literal now emits the correct regex (`/^https?:\/\/[^/]+\/?$/`) and the test returns true.
Audited the other page.evaluate template literals across
animationCataloger.ts, contentExtractor.ts, designStyleExtractor.ts,
htmlExtractor.ts, mediaCapture.ts for the same pattern. None other
instances found — only my two from 02f95f95 had the bug.
Cost during the lived run: 3 full capture attempts before a usable
output, ~32 assets the first time vs ~100 after both fixes. Logged in
the factual error log from the heygen-showcase build.
Two files, one-character-times-six edit each. No semantic change.
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:
npx hyperframes render ./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