Expected and Received constructor is the same but not passed the test in Jest

Question

I'm not sure what is wrong here, but it seems to not being able to pass the test. Function returns an array, so it's an instance of an Object, right ?

This is what I got as an output from Jest:

 FAIL  src/services/database.spec.js
  ● should be able to get an item from a table by id

    expect(received).toBeInstanceOf(expected)

    Expected constructor: Object (<--- this is green)
    Received constructor: Object (<--- this is red)

      77 |   const user = await service.getById('users', 1)
      78 |
    > 79 |   expect(user).toBeInstanceOf(Object)
         |                ^
      80 |   expect(user).toHaveProperty('id')
      81 |   expect(user).toHaveProperty('email')
      82 |   expect(user).toHaveProperty('password')

I'm using a KNEX.js ORM to interact with database:

// this.orm is an instance of knex()
  async getById (table, id) {
    const item = await this.orm(table).where('id', id)

    return item[0]
  }