Function parseKeyframesNode

packages/parsers/src/gsapParser.ts:633–667

(
  node: AstNode | undefined,
  scope: ScopeBindings,
)

 */
// fallow-ignore-next-line complexity
function parseKeyframesNode(
  node: AstNode | undefined,
  scope: ScopeBindings,
): GsapKeyframesData | undefined {
  if (!node) return undefined;

  // ── Object array format: keyframes: [ { x: 0, duration: 0.5 }, ... ] ──
  if (node.type === "ArrayExpression") {
    return parseObjectArrayKeyframes(node, scope);
  }

  if (node.type !== "ObjectExpression") return undefined;

  // Distinguish percentage vs simple-array by inspecting property keys/values.
  const props = node.properties ?? [];
  let hasPercentageKey = false;
  let hasArrayValue = false;

  for (const prop of props) {
    if (prop.type !== "ObjectProperty" && prop.type !== "Property") continue;
    const key = prop.key?.value ?? prop.key?.name;
    if (typeof key === "string" && PERCENTAGE_KEY_RE.test(key)) {
      hasPercentageKey = true;
      break;
    }
    if (prop.value?.type === "ArrayExpression") {
      hasArrayValue = true;
    }
  }

  if (hasPercentageKey) return parsePercentageKeyframes(node, scope);
  if (hasArrayValue) return parseSimpleArrayKeyframes(node, scope);

  return undefined;
}

// fallow-ignore-next-line complexity
function parsePercentageKeyframes(node: AstNode, scope: ScopeBindings): GsapKeyframesData {