Combine text elements in AST

combine-ast.js

let content = node.content;

 if (Array.isArray(node.content)) {
  // Combine elements of type text
   content = node.content.reduce((_content, item) => {
     const lastNodeIndex = _content.length - 1;
     const lastNode = _content[_content.length - 1];
     if (_content.length > 0 && lastNode.type === 'text' && item.type === 'text') {
       _content[lastNodeIndex].content = lastNode.content + item.content;
     } else {
       _content.push(item);
     }
     return _content;
   }, []);

   // Unpack arrays with single items
   if (content.length === 1) {
     content = content[0];
   }
 }