Error: Unable to resolve modulemomentfrom${rootProject}/node_modules/react-native-calendar-picker/CalendarPicker/index.js: Modulemomentdoes not exist in the Haste module map
Moment is a peer dependency, which means you need to place it in your app's package.json. It should have printed a warning that the peer dependency was not met when you ran npm install.
Error: Unable to resolve module
momentfrom
${rootProject}/node_modules/react-native-calendar-picker/CalendarPicker/index.js: Module
momentdoes not exist in the Haste module map
"react": "^16.5.0", "react-native": "^0.57.0", "react-native-calendar-picker": "^5.22.0",