Selecting from a list of options

In web applications, you typically use the <select> element to let the user choose from a list of options. React Native comes with a <Picker> component, which works on both iOS and Android. There is some trickery involved with styling this component based on which platform the user is on, so let's hide all of this inside of a generic Select component. Here's the Select.ios.js module:

import React from "react";
import PropTypes from "prop-types";
import { View, Picker, Text } from "react-native";
import styles from "./styles";

export default function Select(props) {
  return (
    <View style={styles.pickerHeight}>
      <View style={styles.pickerContainer}>
        <Text style={styles.pickerLabel}>{props.label}</Text>
        <Picker style={styles.picker} {...props}>
          {props.items.map(i => (
            <Picker.Item key={i.label} {...i} />
          ))}
  ...