Mongoose Unilevel Query

Question

How can I do unilevel query with mongoose.

Example collection :

ID	NAME	PARENT ID
1	Alex	0
2	Michael	1
3	George	2
4	Yuri	1

Example output :

[{ id:1, name:Alex, parentId:0},{ id:2, Michael, parentId:1},{ id:3, name:George, parentId:2},{ id:4, name:Yuri, parentId:1}]

Thanks for helps.