map2tree(someMap, options = {
  key: 'state',      // the name you want for as the root node of the output tree
  pushMethod: 'push' // use 'unshift' to change the order children nodes are added
})

const someMap = {
  someReducer: {
    todos: [
     {title: 'map', someNestedObject: {foo: 'bar'}},
     {title: 'to', someNestedArray: ['foo', 'bar']},
     {title: 'tree'},
     {title: 'map2tree'}
    ],
    completedCount: 1
  },
  otherReducer: {
    foo: 0,
    bar:{key: 'value'}
  }
};

{
  name: `${options.key}`,
  children: [
    {
      name: 'someReducer',
      children: [
        {
          name: 'todos',
          children: [
            {
              name: 'todo[0]',
              object: {
                title: 'map',
                someNestedObject: {foo: 'bar'}
              }
            },
            {
              name: 'todo[1]',
              object: {
                title: 'to',
                someNestedArray: ['foo', 'bar']
              }
            },
            // ...
          ]
        },
        // ...
      ]
    },
    {
      name: 'otherReducer',
      children: [
        {
          name: 'foo',
          value: 0
        },
        {
          name: 'bar',
          object: {
            key: 'value'
          }
        }
      ]
    }
  ]
}