transformAll.js

function transformAll({ type = '', style = {}, children = [] }) {
  const result = { type, style: transformStyleObject(style), children }
  
  if (Array.isArray(result.children)) {
    for (let index = 0; index < result.children.length; index++) {
      const child = result.children[index]
      child.style = transformStyleObject(child.style)
      
      if (Array.isArray(child.children)) {
        for (
          let childIndex = 0;
          childIndex < child.children.length;
          childIndex++
        ) {
          const childsChildren = child.children[childIndex]
          childsChildren.style = transformStyleObject(childsChildren.style)
          
          if (Array.isArray(childsChildren.children)) {
            for (
              let childsChildsChildrenIndex = 0;
              childsChildsChildrenIndex < childsChildren.children.length;
              childsChildsChildrenIndex++
            ) {
              const childsChildsChild =
                childsChildren.children[childsChildsChildrenIndex]
              // ...etc
            }
          }
        }
      }
    }
  }
  
  return result
}