score:2

Accepted answer
var data = [{type:"heading-one",children:[{text:"Introduction"}]},{type:"paragraph",children:[{text:"By creating an Account on our service, you agree to subscribe to newsletters, marketing or promotional materials and other information we may send. You may opt out of receiving any, or all, of these communications from us by following the unsubscribe link or instructions provided in any email we send."}]},{type:"paragraph",children:[{text:"By creating an Account on our service, you agree to subscribe to newsletters, marketing or promotional materials and other information we may send. You may opt out of receiving any, or all, of these communications from us by following the unsubscribe link or instructions provided in any email we send."}]},{type:"heading-one",children:[{text:"The Challenge"}]},{type:"paragraph",children:[{text:"By creating an Account on our service, you agree to subscribe to newsletters, marketing or promotional materials and other information we may send. You may opt out of receiving any, or all, of these communications from us by following the unsubscribe link or instructions provided in any email we send."}]},{type:"paragraph",children:[{text:"By creating an Account on our service, you agree to subscribe to newsletters, marketing or promotional materials and other information we may send. You may opt out of receiving any, or all, of these communications from us by following the unsubscribe link or instructions provided in any email we send."}]},{type:"heading-one",children:[{text:"The result"}]},{type:"image",image:"https://manifestcmsc17f0d6ef1e94ccd9a9ff71aa6de1f0a164427-develop.s3.us-west-2.amazonaws.com/public/682a6e8c-f773-4868-9541-1cf6ce052d62/2021-10-19T16:36:45.514Z-tkabg-background-png.png",children:[{text:""}]},{type:"image",image:"https://manifestcmsc17f0d6ef1e94ccd9a9ff71aa6de1f0a164427-develop.s3.us-west-2.amazonaws.com/public/682a6e8c-f773-4868-9541-1cf6ce052d62/2021-10-19T16:36:45.516Z-58nhz-background-png.png",children:[{text:""}]},{type:"image",image:"https://manifestcmsc17f0d6ef1e94ccd9a9ff71aa6de1f0a164427-develop.s3.us-west-2.amazonaws.com/public/682a6e8c-f773-4868-9541-1cf6ce052d62/2021-10-19T16:36:45.517Z-1wwvq-background-png.png",children:[{text:""}]},{type:"heading-one",children:[{text:"Conclusion"}]},{type:"paragraph",children:[{text:"By creating an Account on our service, you agree to subscribe to newsletters, marketing or promotional materials and other information we may send. You may opt out of receiving any, or all, of these communications from us by following the unsubscribe link or instructions provided in any email we send."}]}];

// This will be the final result
var merged_data = [];

// For each item in the data array..
for(i=0; i<data.length; i++){
  
  // If the current item is an image...
  if(data[i].type === "image"){
  
    // If the last item on the merged array was not an array of images
    if(merged_data[merged_data.length-1].type !== "image"){
      
      // Add an empty image array to the end of the merged array
      merged_data.push({type: "image", images: []});
    }
    
    // Add our current image to the array on the end of the merged array
    merged_data[merged_data.length-1].images.push(data[i].image);
    
  }else{
  
    // The current item isn't an image, add it to the merged array as is
    merged_data.push(data[i]);
  }
}

console.log(merged_data);

score:0

var data = [{type:"heading-one",children:[{text:"Introduction"}]},{type:"paragraph",children:[{text:"By creating an Account on our service, you agree to subscribe to newsletters, marketing or promotional materials and other information we may send. You may opt out of receiving any, or all, of these communications from us by following the unsubscribe link or instructions provided in any email we send."}]},{type:"paragraph",children:[{text:"By creating an Account on our service, you agree to subscribe to newsletters, marketing or promotional materials and other information we may send. You may opt out of receiving any, or all, of these communications from us by following the unsubscribe link or instructions provided in any email we send."}]},{type:"heading-one",children:[{text:"The Challenge"}]},{type:"paragraph",children:[{text:"By creating an Account on our service, you agree to subscribe to newsletters, marketing or promotional materials and other information we may send. You may opt out of receiving any, or all, of these communications from us by following the unsubscribe link or instructions provided in any email we send."}]},{type:"paragraph",children:[{text:"By creating an Account on our service, you agree to subscribe to newsletters, marketing or promotional materials and other information we may send. You may opt out of receiving any, or all, of these communications from us by following the unsubscribe link or instructions provided in any email we send."}]},{type:"heading-one",children:[{text:"The result"}]},{type:"image",image:"https://manifestcmsc17f0d6ef1e94ccd9a9ff71aa6de1f0a164427-develop.s3.us-west-2.amazonaws.com/public/682a6e8c-f773-4868-9541-1cf6ce052d62/2021-10-19T16:36:45.514Z-tkabg-background-png.png",children:[{text:""}]},{type:"image",image:"https://manifestcmsc17f0d6ef1e94ccd9a9ff71aa6de1f0a164427-develop.s3.us-west-2.amazonaws.com/public/682a6e8c-f773-4868-9541-1cf6ce052d62/2021-10-19T16:36:45.516Z-58nhz-background-png.png",children:[{text:""}]},{type:"image",image:"https://manifestcmsc17f0d6ef1e94ccd9a9ff71aa6de1f0a164427-develop.s3.us-west-2.amazonaws.com/public/682a6e8c-f773-4868-9541-1cf6ce052d62/2021-10-19T16:36:45.517Z-1wwvq-background-png.png",children:[{text:""}]},{type:"heading-one",children:[{text:"Conclusion"}]},{type:"paragraph",children:[{text:"By creating an Account on our service, you agree to subscribe to newsletters, marketing or promotional materials and other information we may send. You may opt out of receiving any, or all, of these communications from us by following the unsubscribe link or instructions provided in any email we send."}]}];

const transformArray = (givenArray) => {
  let imagesArray = givenArray.filter((item) => item.type === "image");
  let withoutImageArray = givenArray.filter((item) => item.type !== "image");
  let arrayOfImageLinks = imagesArray.map((item) => item.image);
  return [...withoutImageArray, { type: "images", images: arrayOfImageLinks }];
};

console.log(transformArray(data));

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