Files
hyperframes/packages/core
WaterrrForeverandClaude Opus 4.8 4db708eb4a fix(core): register sub-composition timelines after async build + lint rule (#1638)
* fix(core): register sub-composition timelines after async build + lint rule

When a composition builds its GSAP timeline inside document.fonts.ready (or any
async callback), registering window.__timelines[id] BEFORE the build leaves an
EMPTY timeline registered. The runtime's sub-composition readiness gate treats
"key present" as "ready" and nests the child once — an empty timeline gets
nested empty and is never re-nested, so the frame renders blank when used as a
sub-composition.

- registry/blocks/code-{diff,highlight,morph,scroll,typing}: register the
  timeline AFTER the fonts.ready build completes, then call
  window.__hfForceTimelineRebind() to re-nest now that it is populated.
- core lint: add rule gsap_timeline_registered_before_async_build to flag the
  early-registration anti-pattern, with tests.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* test(studio): import commitGsapPositionFromDrag from its actual module

The function was split out into gsapDragPositionCommit.ts in #1605, but the
test kept importing it from ./gsapDragCommit, which no longer exports it —
yielding 'is not a function' at runtime. Import from the correct module.

Inherited main breakage (same fix as #1631/#1635); fixes the Test CI check on
this branch independently of merge order.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-22 22:50:04 +08:00
..
2026-06-21 17:59:01 -04:00
2026-03-21 22:43:56 -07:00

@hyperframes/core

Types, parsers, generators, compiler, linter, runtime, and frame adapters for the Hyperframes video framework.

Install

npm install @hyperframes/core

Most users don't need to install core directly — the CLI, producer, and studio packages depend on it internally.

What's inside

Module Description
Types TimelineElement, CompositionSpec, Asset, canvas dimensions, defaults
Parsers parseHtml — extract timeline elements from HTML; parseGsapScript — parse GSAP animations
Generators generateHyperframesHtml — produce valid Hyperframes HTML from a composition spec
Compiler compileTimingAttrs — resolve data-start / data-duration into absolute times
Linter lintHyperframeHtml — validate Hyperframes HTML (missing attributes, overlapping tracks, etc.)
Runtime IIFE script injected into the browser — manages seek, media playback, and the window.__hf protocol
Frame Adapters Pluggable animation drivers (GSAP, Lottie, CSS, or custom)

Frame Adapters

A frame adapter tells the engine how to seek your animation to a specific frame:

import { createGSAPFrameAdapter } from "@hyperframes/core";

const adapter = createGSAPFrameAdapter({
  getTimeline: () => gsap.timeline(),
  compositionId: "my-video",
});

Implement FrameAdapter for custom animation runtimes:

import type { FrameAdapter } from "@hyperframes/core";

const myAdapter: FrameAdapter = {
  id: "my-adapter",
  getDurationFrames: () => 300,
  seekFrame: (frame) => {
    /* seek your animation */
  },
};

Parsing and generating HTML

import { parseHtml, generateHyperframesHtml } from "@hyperframes/core";

const { elements, metadata } = parseHtml(htmlString);
const html = generateHyperframesHtml(spec);

Linting

import { lintHyperframeHtml } from "@hyperframes/core/lint";

const result = lintHyperframeHtml(htmlString);
// result.findings: { severity, message, elementId }[]

Documentation

Full documentation: hyperframes.heygen.com/packages/core