Cordova プラグインのコールバック地獄から脱却！Non-Angular アプリケーションでも Ionic Native を利用するという選択

cordova.exec(function(winParam) {},
             function(error) {},
             "service",
             "action",
             ["firstArgument", "secondArgument", 42, false]);

$ cordova create cordova-with-ionic-native
$ cd cordova-with-ionic-native/

$ cordova platform add ios
$ cordova platform add android

$ npm install babel-core babel-loader babel-preset-env webpack webpack-cli --save-dev

{
  "presets": [
    [
      "env", {
        "modules": false
      }
    ]
  ]
}

const path = require('path');
const webpack = require('webpack');

module.exports = {
  entry: './www/js/index.js',
  output: {
    path: path.resolve(__dirname, 'www/js'),
    filename: 'index.bundle.js',
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        loader: 'babel-loader',
      },
    ],
  },
  devtool: 'source-map',
};

$ npm install @angular/core @ionic-native/core rxjs --save

$ cordova plugin add cordova-plugin-geolocation --variable GEOLOCATION_USAGE_DESCRIPTION="To locate you"
$ npm install --save @ionic-native/geolocation

     <platform name="ios">
         <allow-intent href="itms:*" />
         <allow-intent href="itms-apps:*" />
+        <edit-config file="*-Info.plist" mode="merge" target="NSLocationWhenInUseUsageDescription">
+            <string>need location access to find things nearby</string>
+        </edit-config>
     </platform>

-         <script type="text/javascript" src="js/index.js"></script>
+         <script type="text/javascript" src="js/index.bundle.js"></script>

import { Geolocation } from '@ionic-native/geolocation';

document.addEventListener('deviceready', () => {
  // onSuccess Callback
  // This method accepts a Position object, which contains the
  // current GPS coordinates
  //
  const onSuccess = position => {
    alert([
      `Latitude: ${position.coords.latitude}`,
      `Longitude: ${position.coords.longitude}`,
      `Altitude: ${position.coords.altitude}`,
      `Accuracy: ${position.coords.accuracy}`,
      `Altitude Accuracy: ${position.coords.altitudeAccuracy}`,
      `Heading: ${position.coords.heading}`,
      `Speed: ${position.coords.speed}`,
      `Timestamp: ${position.timestamp}`,
    ].join('\n'));
  };

  // onError Callback receives a PositionError object
  //
  const onError = error => {
    alert([
      `code: ${error.code}`,
      `message: ${error.message}`,
    ].join('\n'));
  }

  const geolocation = new Geolocation();
  geolocation.getCurrentPosition()
    .then(onSuccess)
    .catch(onError);
}, false);

$ npm run webpack
$ cordova run ios
$ cordova run android