Function colorize

src/utils/treeify.ts:50–53

(text: string, colorKey?: keyof Theme)

  const visited = new WeakSet<object>()

  function colorize(text: string, colorKey?: keyof Theme): string {
    if (!colorKey) return text
    return color(colorKey, themeName)(text)
  }

  function growBranch(
    node: TreeNode | string,