Function emitInteractionX

src/core/createRenderCoordinator.ts:2023–2026

(nextX: number | null, source?: unknown)

    | null = null;

  const emitInteractionX = (nextX: number | null, source?: unknown): void => {
    const snapshot = Array.from(interactionXListeners);
    for (const cb of snapshot) cb(nextX, source);
  };

  const setInteractionXInternal = (nextX: number | null, source?: unknown): void => {
    const normalized = nextX !== null && Number.isFinite(nextX) ? nextX : null;