How to convert bson to json in node.js?

Question

How to convert bson to json in node.js?

I'm checking the difference between two different obj, this shows an error because it wants JSON. (Data fatch from Mongodb)

I'm using below link fast-json-patch but its not working.

see difference

i am using this for bson to json

   var job = objjob;
   var job2 = objreq; 
   var delta = diffpatcher.diff(job ,job2 );
   console.log(delta);

JOB1 BELOW DATA: I WANT TO COMPARE JOB 1 AND JOB 2

  [ { name: 'Tape',
        cost: 10,
        datetime: 2016-12-29T14:28:06.846Z,
        update_by: '',
        _id: 58651d762cd7d2f00cc2de26,
        image_path: null },  

     { name: 'Wire',
        cost: 100,
        datetime: 2016-12-29T14:28:06.845Z,
        update_by: '',
        _id: 58651d762cd7d2f00cc2de24,
        image_path: null } ]

JOB 2..

[ { image_path: null,
    _id: '58651d762cd7d2f00cc2de26',
    update_by: '',
    datetime: '2016-12-29T14:28:06.846Z',
    cost: 10,
    name: 'Tape',
    id: '58651d762cd7d2f00cc2de26' },

  { image_path: null,
    _id: '58651d762cd7d2f00cc2de24',
    update_by: '',
    datetime: '2016-12-29T14:28:06.845Z',
    cost: 100,
    name: 'Wire',
    id: '58651d762cd7d2f00cc2de24' } ]