text: import test from 'ava'
  import {removeEmpty} from './remove-empty'
  
  test('removeEmpty should remove undefined values out of an array', t => {
    t.deepEqual(removeEmpty([undefined, 0, 1, 2, undefined, 3, undefined, null]), [0, 1, 2, 3, null])
  })
  
  test('removeEmpty should remove keys whose values are `undefined` out of an object', t => {
    t.deepEqual(
      removeEmpty({a: 1, b: 'b', c: undefined, d: null}),
      {a: 1, b: 'b', d: null}
    )
  })
  