message: fixed images validation
diff: @@ -154,7 +154,7 @@ class Pass extends EventEmitter {
  }
  for (const j in REQUIRED_IMAGES) {
  const k2 = REQUIRED_IMAGES[j];
  - if (!this.images[k2]) throw new Error(`Missing image ${k2}.png`);
  + if (!this.images.map.has(k2)) throw new Error(`Missing image ${k2}.png`);
  }
  }
  