message: 100% code coverage for formatDuration API
diff: @@ -76,4 +76,9 @@ describe('formatDuration', () => {
  '9 months, 2 days'
  )
  })
  +
  + it('throws TypeError exception if passed less than 1 argument', () => {
  + // @ts-expect-error
  + assert.throws(formatDuration.bind(null), TypeError)
  + })
  })
  