directoryOutput.js

/* Given a JSON object, where each entry represents a directory which have a nested entry of it's own. Create the resulting directory structure */

const directoryRoot = [
    {
      type: "folder",
      name: "root",
      path: "/root",
      children: [
        {
          type: "folder",
          name: "Downloads",
          path: "/downloads",
          children: [
            {
              type: "file",
              name: "movie.mp4",
              path: "/movie",
              children: []
            }
          ]
        },
        {
          type: "folder",
          name: "Documents",
          path: "/documents",
          children: [
            {
              type: "folder",
              name: "app",
              path: "/app",
              children: [
                {
                  type: "file",
                  name: "index.html",
                  path: "/index.html",
                  children: []
                },
                {
                  type: "folder",
                  name: "src",
                  path: "/src",
                  children: [
                    {
                      type: "file",
                      name: "index.js",
                      path: "/index.js",
                      children: []
                    }
                  ]
                }
              ]
            }
          ]
        },
        {
          type: "folder",
          name: "Pictures",
          path: "/pictures",
          children: [
            {
              type: "file",
              name: "2018-09-12.jpg",
              path: "/2018-09-12.jpg",
              children: []
            },
            {
              type: "file",
              name: "2020-19-03.jpg",
              path: "/2020-19-03.jpg",
              children: []
            }
          ]
        },
        {
          type: "folder",
          name: "Music",
          path: "/music",
          children: [
            {
              type: "folder",
              name: "hiphop",
              path: "/hiphop",
              children: [
                {
                  type: "file",
                  name: "music-hiphop.mp3",
                  path: "/music-hiphop.mp3",
                  children: []
                }
              ]
            },
            {
              type: "folder",
              name: "classical",
              path: "/classical",
              children: [
                {
                  type: "file",
                  name: "music-classical-1.mp3",
                  path: "/music-classical-1.mp3",
                  children: []
                },
                {
                  type: "file",
                  name: "music-classical-2.mp3",
                  path: "/music-classical-2.mp3",
                  children: []
                },
                {
                  type: "file",
                  name: "music-classical-3.mp3",
                  path: "/music-classical-3.mp3",
                  children: []
                }
              ]
            },
            {
              type: "folder",
              name: "desi",
              path: "/desi",
              children: [
                {
                  type: "file",
                  name: "music-desi-1.mp3",
                  path: "/music-desi-1.mp3",
                  children: []
                }
              ]
            }
          ]
        }
      ]
    }
  ];

  const recursive = function(dir, index) {
    let str = " ".repeat(index) + "├── " + dir.name;
    index += 4;
    str += `
    `;
    for (const folder of dir.children) {
      str += constructDirectory(folder, index);
    }
    return str;
  };
  
  const constructDirectory = function(root, index) {
    if (root && root.type === "file") {
      return " ".repeat(index) + "├──" + root.name + "\n\t";
    }
    return recursive(root, index);
  };
  
  console.log(constructDirectory(
    directoryRoot.pop(),
    0));