print-flat-tree

print-flat-tree

Converts a flat tree to a string

npm install print-flat-tree

Usage

var print = require('print-flat-tree')

// your tree represented as a flat tree (each index means that node exists in the tree)
var tree = [0, 1, 2, 3, 7, 8, 9, 10]
console.log(print(tree))

Running the above outputs

  0──┐
     1──┐
  2──┘  │
        3──┐
           │
           │
           │
           7
  8──┐
     9
 10──┘

As can be seen from the above diagram 7 is the parent of 3 and 3 is the parent of 1 etc.

API

str = print(tree, [opts])

Returns a string representation of the tree (represented as an array of flat tree indexes). Per default ansi colors are used to color the tree. Pass {color: false} to disable this.

Command line tool

There is also a command line tool available

npm install -g print-flat-tree
print-flat-tree 0 1 2 3 7 8 9 10 # print the above example
print-flat-tree {0..10} # print a tree with nodes 0->10

Yellow nodes are the leaf nodes and red nodes are nodes that can be fully rooted inside this tree

License

MIT