fix: support rendering on unsupported platforms (#629)

src/DatePickerAndroid.js

@@ -1,16 +1,17 @@
 import React from 'react'
-import { NativeModules, requireNativeComponent } from 'react-native'
+import { NativeModules, requireNativeComponent, Platform } from 'react-native'
 import { shouldCloseModal, shouldOpenModal } from './modal'
 
 function addMinutes(date, minutesToAdd) {
   return new Date(date.valueOf() + minutesToAdd * 60 * 1000)
 }
 
-const NativeDatePicker = requireNativeComponent(
-  `DatePickerManager`,
-  DatePickerAndroid,
-  { nativeOnly: { onChange: true } }
-)
+const NativeDatePicker =
+  Platform.OS === 'android'
+    ? requireNativeComponent(`DatePickerManager`, DatePickerAndroid, {
+        nativeOnly: { onChange: true },
+      })
+    : null
 
 const height = 180
 const timeModeWidth = 240

src/DatePickerIOS.js

@@ -1,8 +1,9 @@
 import React from 'react'
-import { StyleSheet, requireNativeComponent, NativeModules } from 'react-native'
+import { StyleSheet, requireNativeComponent, NativeModules, Platform } from 'react-native'
 import { shouldCloseModal, shouldOpenModal } from './modal'
 
-const RCTDatePickerIOS = requireNativeComponent('RNDatePicker')
+const RCTDatePickerIOS =
+  Platform.OS === 'ios' ? requireNativeComponent('RNDatePicker') : null
 
 export default class DatePickerIOS extends React.Component {
   _picker = null

src/index.js

@@ -1,14 +1,15 @@
 import React from 'react'
-import { Platform, Appearance } from 'react-native'
-import DatePickerIOS from './DatePickerIOS'
+import { Platform, Appearance, Text } from 'react-native'
 import DatePickerAndroid from './DatePickerAndroid'
 import propTypes from './propTypes'
 import { colorToHex } from './colorToHex'
 import { throwIfInvalidProps } from './propChecker'
+import DatePickerIOS from './DatePickerIOS'
 
 const DatePicker = Platform.select({
   android: DatePickerAndroid,
   ios: DatePickerIOS,
+  default: () => <Text>DatePicker is not supported on this platform.</Text>,
 })
 
 DatePicker.propTypes = propTypes