text: import isResolved from './isResolved'
  
  example('isResolved', () => {
    isResolved({
      ['@@redux-saga/IO']: 'op'
    })
    // => false
  
    isResolved((function() {})())
    // => false
  
    isResolved(new Promise(() => {}))
    // => false
  
    isResolved({ resolve: () => 'foo' })
    // => false
  
    isResolved(null)
    // => true
  
    isResolved(undefined)
    // => true
  
    isResolved('abc')
    // => true
  })
  