gistfile1.txt

const currentMonth = 8;

const data = [{
    employee: 70,
    month: 0,
    year: 2017,
    id: 3,
    createdAt: '2017-09-15T09:42:37.000Z',
    updatedAt: '2017-09-15T09:42:37.000Z',
    organization: 41,
    version: 1
},
{
    employee: 70,
    month: 4,
    year: 2017,
    id: 4,
    createdAt: '2017-09-15T09:59:28.000Z',
    updatedAt: '2017-09-15T09:59:28.000Z',
    organization: 41,
    version: 2
},
{
    employee: 70,
    month: 4,
    year: 2017,
    id: 5,
    createdAt: '2017-09-15T10:00:35.000Z',
    updatedAt: '2017-09-15T10:00:35.000Z',
    organization: 41,
    version: 3
},
{
    employee: 70,
    month: 4,
    year: 2017,
    id: 6,
    createdAt: '2017-09-15T10:01:18.000Z',
    updatedAt: '2017-09-15T10:01:18.000Z',
    organization: 41,
    version: 4
},
{
    employee: 70,
    month: 4,
    year: 2017,
    id: 7,
    createdAt: '2017-09-15T10:07:11.000Z',
    updatedAt: '2017-09-15T10:07:11.000Z',
    organization: 41,
    version: 5
},
{
    employee: 70,
    month: 4,
    year: 2017,
    id: 8,
    createdAt: '2017-09-15T10:40:11.000Z',
    updatedAt: '2017-09-15T10:40:11.000Z',
    organization: 41,
    version: 6
},
{
    employee: 70,
    month: 4,
    year: 2017,
    id: 9,
    createdAt: '2017-09-15T10:40:58.000Z',
    updatedAt: '2017-09-15T10:40:58.000Z',
    organization: 41,
    version: 7
}, {
    employee: 70,
    month: 7,
    year: 2017,
    id: 10,
    createdAt: '2017-09-15T10:40:58.000Z',
    updatedAt: '2017-09-15T10:40:58.000Z',
    organization: 41,
    version: 6
}, {
    employee: 70,
    month: 7,
    year: 2017,
    id: 11,
    createdAt: '2017-09-15T10:40:58.000Z',
    updatedAt: '2017-09-15T10:40:58.000Z',
    organization: 41,
    version: 7
}, {
    employee: 73,
    month: 8,
    year: 2017,
    id: 11,
    createdAt: '2017-09-15T10:40:58.000Z',
    updatedAt: '2017-09-15T10:40:58.000Z',
    organization: 41,
    version: 1
}];

// here there is employee 73 for moth 8 only, so it should return this month only,
// if i enter a new record for same employee,
// suppose 

{
    employee: 73,
    month: 4,
    year: 2017,
    id: 11,
    createdAt: '2017-09-15T10:40:58.000Z',
    updatedAt: '2017-09-15T10:40:58.000Z',
    organization: 41,
    version: 1
}

// then the same process goes on, if current month is 5 give me record of month 4, if current month is 3 then there is no
// lowest closet record to it, so take closet highest record which is of month 4