Handing the message to add a new item to the list component

.js

// actions gets two arguments: state and the message we send
function actions(state, message) {
  switch(message) {
    case 'updateInputValue':
      // Update state with new value:
      state.inputValue = message.value
      // Don't forget to return state:
      return state
    case 'addItem':
      // Add new item to array:
      state.fruits.push({
        key: state.newKey++,
        value: state.inputValue
      })
      // Don't forget to return state:
      return state
  }
}