function easeOut(functionName) {
    return functionsMap$1[functionName.toLowerCase().trim()];
  }
String to represent common easing functions as demonstrated here: (github.com/jaukia/easie).

@example
// Styles as object usage
const styles = {
  'transitionTimingFunction': easeOut('quad')
}

// styled-components usage
 const div = styled.div`
  transitionTimingFunction: ${easeOut('quad')};
`

// CSS as JS Output

'div': {
  'transitionTimingFunction': 'cubic-bezier(0.250,  0.460, 0.450, 0.940)',
}