Iterable tree class by @Orangetronic

iterable-tree.md

Instantiate this class around a tree-like object, e.g.

const filetree = new IterableTree({
  name : "Desktop",
  children : [
   { name : "funny.gif" },
   { name : "resume.pdf" },
   { name : "memes",
     children : [
      { name : "distracted-boyfriend.png" },
      { name : "bröther-may-i-have-some-oats.png" },
      { name : "galaxy-brain.png" },
     ]
   },
   { name : "screenshots",
     children : [
      { name : "screenshot-12-04-2019.png" },
      { name : "screenshot-14-04-2019.png" },
      { name : "screenshot-15-04-2019.png" }
     ]
   }
  ]
})

You can then iterate through your tree like this:

console.log("Your desktop contains the following nonsense")
for (const node of filetree) {
  const nodeType = node.children == null ? "file" : "folder"
  console.log(`${nodeType}: ${node.name}`)
}

You can even spread it into an array

const myFilesAndFolders = [...filetree]

iterableTree.js

class IterableTree {
  
  constructor(tree) {
    this.tree = tree;
  }

  *[Symbol.iterator]() {
    const treeReducer = (accumulator, node) => [
      ...accumulator,
      node,
      ...(node.children || []).reduce(treeReducer, [])
    ];
    yield* [this.tree].reduce(treeReducer, []);
  }

}