function treeFormat(obj = {}, rootName){
  const nl = /\r\n|\r|\n/,
  INDENT     = " │",  CHILD = " ├",
  LAST_CHILD = " └",  BLANK = "  ",
  formatTreeChildren = (node, indentStr) => {
    const keys = Object.keys(node);
    let output = "";
    for (let i = 0; i < keys.length; i++) {
      const isLastChild = i === keys.length - 1,
        key = keys[i],
        val = node[key],
        // support keys with newlines in them
        keylines = key.split(nl),
        child = isLastChild ? LAST_CHILD : CHILD,
        nextIndent = indentStr + (isLastChild ? BLANK : INDENT);
      output += `${indentStr}${child}${keylines[0]}`;
      for (let j = 1; j < keylines.length; j++)
        output += nextIndent + keylines[j];
      if (typeof val === "object") output += formatTreeChildren(val, nextIndent);
      else if (val) output += " : " + val;
    }
    return output;
  },
  // If our object has only one property, and no explicit name for the root
  // has been given, we turn that one property into the root of the tree
  rootKeys = Object.keys(obj);
  if (rootKeys.length === 1 && !rootName && typeof obj[rootKeys[0]] === "object") {
    obj = obj[rootName = rootKeys[0]];
  } else if (!rootName) { rootName = "▓▓▓"; }
  return rootName + formatTreeChildren(obj, "\n");
}