CODE EXAMPLE FOR JAVASCRIPT

In React Native / Expo, is there any way to save a specific part of an image

takePicture = () => {
      if (this.camera) {
          this.camera.takePictureAsync({ onPictureSaved: this.onPictureSaved });
      }
   };

  onPictureSaved = photo => {
      console.log(photo);
  }