Sorting of empty strings / null value is wrong

[vladshcherbin]

Code:

const sort = require('deep-sort');

const emptyStringTestArray = [
  { title: 'b' },
  { title: '' },
  { title: 'a' }
]

const nullTestArray = [
  { title: 'b' },
  { title: null },
  { title: 'a' }
]

console.log(sort(emptyStringTestArray, 'title'))
console.log(sort(nullTestArray, 'title'))

Output:

[
  { title: '' },
  { title: 'a' },
  { title: 'b' }
]

[
  { title: 'b' },
  { title: null },
  { title: 'a' }
]

Expected output:

[
  { title: 'a' },
  { title: 'b' },
  { title: '' }
]

[
  { title: 'a' },
  { title: 'b' },
  { title: null }
]

Since it's sorting by string alphabetically, I'd expect to see empty string or null values at the end of the array.