Function parseStageZoomKeyframes

packages/parsers/src/htmlParser.ts:452–484

(doc: Document)

}

function parseStageZoomKeyframes(doc: Document): StageZoomKeyframe[] {
  const zoomContainer = doc.getElementById("stage-zoom-container");
  if (!zoomContainer) {
    return [];
  }

  const zoomKeyframesAttr = zoomContainer.getAttribute("data-zoom-keyframes");
  if (!zoomKeyframesAttr) {
    return [];
  }

  try {
    const parsed = JSON.parse(zoomKeyframesAttr);
    if (Array.isArray(parsed)) {
      return parsed.filter(
        (kf): kf is StageZoomKeyframe =>
          typeof kf === "object" &&
          kf !== null &&
          typeof kf.id === "string" &&
          typeof kf.time === "number" &&
          typeof kf.zoom === "object" &&
          kf.zoom !== null &&
          typeof kf.zoom.scale === "number" &&
          typeof kf.zoom.focusX === "number" &&
          typeof kf.zoom.focusY === "number",
      );
    }
  } catch {
    // skip invalid zoom keyframes
  }

  return [];
}

function normalizeKeyframes(
  keyframes: Keyframe[],