Function collectSamplingTargets

packages/cli/src/utils/motionAudit.ts:243–265

(assertions: MotionAssertion[])

 * Selectors feed the per-element matrix; scopes feed keepsMoving liveness.
 */
export function collectSamplingTargets(assertions: MotionAssertion[]): {
  selectors: string[];
  livenessScopes: string[];
} {
  const selectors = new Set<string>();
  const scopes = new Set<string>();
  for (const assertion of assertions) {
    switch (assertion.kind) {
      case "appearsBy":
      case "staysInFrame":
        selectors.add(assertion.selector);
        break;
      case "before":
        selectors.add(assertion.a);
        selectors.add(assertion.b);
        break;
      case "keepsMoving":
        scopes.add(assertion.withinSelector ?? "*");
        break;
    }
  }
  return { selectors: [...selectors], livenessScopes: [...scopes] };
}