diff --git a/scripts/build/build.js b/scripts/build/build.js
index bd81852f5..31730130b 100644
--- a/scripts/build/build.js
+++ b/scripts/build/build.js
@@ -53,14 +53,17 @@ const PLUGINS = fs.readdirSync(PLUGINS_PATH);
 // Build specific list of plugins to build from arguments, if any
 let pluginsToBuild = process.argv.slice(2);
 let ignoreErrors = false;
+let errors = [];
+
+const index = pluginsToBuild.indexOf('ignore-errors');
+if (index > -1) {
+  ignoreErrors = true;
+  pluginsToBuild.splice(index, 1);
+  console.log('Build will continue even if errors were thrown. Errors will be printed when build finishes.');
+}
+
 if (!pluginsToBuild.length) {
   pluginsToBuild = PLUGINS;
-} else {
-  const index = pluginsToBuild.indexOf('--ignore-errors');
-  if (index > -1) {
-    ignoreErrors = true;
-    pluginsToBuild.splice(index, 1);
-  }
 }
 
 // Create a queue to process tasks
@@ -109,12 +112,14 @@ const addPluginToQueue = pluginName => {
         exec(`${ROOT}/node_modules/.bin/ngc -p ${tsConfigPath}`, (err, stdout, stderr) => {
 
           if (err) {
-            console.log(err);
 
             if (!ignoreErrors) {
               // oops! something went wrong.
+              console.log(err);
               callback(`\n\nBuilding ${pluginName} failed.`);
               return;
+            } else {
+              errors.push(err);
             }
 
           }
@@ -137,6 +142,9 @@ QUEUE.start((err) => {
 
   if (err) {
     console.log('Error building plugins. ', err);
+  } else if (errors.length) {
+    errors.forEach(e => console.log(e.message) && console.log('\n'));
+    console.log('Build complete with errors');
   } else {
     console.log('Done processing plugins!');
   }
diff --git a/scripts/build/tsconfig-core.json b/scripts/build/tsconfig-core.json
index 44b50a3db..88250a7b8 100644
--- a/scripts/build/tsconfig-core.json
+++ b/scripts/build/tsconfig-core.json
@@ -13,7 +13,8 @@
     "skipLibCheck": true,
     "lib": ["es2015", "dom"],
     "sourceMap": true,
-    "inlineSources": true
+    "inlineSources": true,
+    "noImplicitAny": true
   },
   "files": [
     "../../src/@ionic-native/core/index.ts"
diff --git a/scripts/build/tsconfig-plugin.json b/scripts/build/tsconfig-plugin.json
index 3cfd5dca3..3e4a6d6f8 100644
--- a/scripts/build/tsconfig-plugin.json
+++ b/scripts/build/tsconfig-plugin.json
@@ -16,7 +16,8 @@
     "skipLibCheck": true,
     "lib": ["es2015", "dom"],
     "sourceMap": true,
-    "inlineSources": true
+    "inlineSources": true,
+    "noImplicitAny": true
   },
   "files": []
 }
diff --git a/src/@ionic-native/core/bootstrap.ts b/src/@ionic-native/core/bootstrap.ts
index a8557a182..09ac37f15 100644
--- a/src/@ionic-native/core/bootstrap.ts
+++ b/src/@ionic-native/core/bootstrap.ts
@@ -1,5 +1,3 @@
-declare var window;
-
 export function checkReady() {
   const DEVICE_READY_TIMEOUT = 5000;
 
@@ -16,7 +14,7 @@ export function checkReady() {
   });
 
   setTimeout(() => {
-    if (!didFireReady && window.cordova) {
+    if (!didFireReady && !!window.cordova) {
       console.warn(`Ionic Native: deviceready did not fire within ${DEVICE_READY_TIMEOUT}ms. This can happen when plugins are in an inconsistent state. Try removing plugins from plugins/ and reinstalling them.`);
     }
   }, DEVICE_READY_TIMEOUT);
diff --git a/src/@ionic-native/core/decorators.ts b/src/@ionic-native/core/decorators.ts
index a9dbab18f..3429c74c0 100644
--- a/src/@ionic-native/core/decorators.ts
+++ b/src/@ionic-native/core/decorators.ts
@@ -32,6 +32,8 @@ export interface PluginConfig {
    * Supported platforms
    */
   platforms?: string[];
+
+  [key: string]: any;
 }
 
 export interface CordovaOptions {
@@ -182,12 +184,12 @@ export function CordovaCheck(opts: CordovaCheckOptions = {}) {
  *  }
  * ```
  */
-export function Plugin(config: PluginConfig) {
-  return function(cls) {
+export function Plugin(config: PluginConfig): ClassDecorator {
+  return function(cls: any) {
 
     // Add these fields to the class
-    for (let k in config) {
-      cls[k] = config[k];
+    for (let prop in config) {
+      cls[prop] = config[prop];
     }
 
     cls['installed'] = function(printWarning?: boolean) {
diff --git a/src/@ionic-native/core/plugin.ts b/src/@ionic-native/core/plugin.ts
index aaaeae298..f7fbedce1 100644
--- a/src/@ionic-native/core/plugin.ts
+++ b/src/@ionic-native/core/plugin.ts
@@ -7,8 +7,8 @@ import 'rxjs/add/observable/fromEvent';
 
 checkReady();
 
-declare var window;
-declare var Promise;
+// declare const window;
+// declare var Promise;
 
 
 /**
@@ -16,8 +16,8 @@ declare var Promise;
  * @return {boolean | { error: string } }
  * @private
  */
-export function checkAvailability(pluginRef: string, methodName?: string, pluginName?: string);
-export function checkAvailability(pluginObj: any, methodName?: string, pluginName?: string);
+export function checkAvailability(pluginRef: string, methodName?: string, pluginName?: string): boolean | { error: string };
+export function checkAvailability(pluginObj: any, methodName?: string, pluginName?: string): boolean | { error: string };
 export function checkAvailability(plugin: any, methodName?: string, pluginName?: string): boolean | { error: string } {
 
   let pluginRef, pluginInstance, pluginPackage;
@@ -69,7 +69,7 @@ function setIndex(args: any[], opts: any = {}, resolve?: Function, reject?: Func
     args.unshift(reject);
     args.unshift(resolve);
   } else if (opts.callbackStyle === 'node') {
-    args.push((err, result) => {
+    args.push((err: any, result: any) => {
       if (err) {
         reject(err);
       } else {
@@ -135,8 +135,8 @@ function callCordovaPlugin(pluginObj: any, methodName: string, args: any[], opts
 }
 
 function wrapPromise(pluginObj: any, methodName: string, args: any[], opts: any = {}) {
-  let pluginResult, rej;
-  const p = getPromise((resolve, reject) => {
+  let pluginResult: any, rej: Function;
+  const p = getPromise((resolve: Function, reject: Function) => {
     pluginResult = callCordovaPlugin(pluginObj, methodName, args, opts, resolve, reject);
     rej = reject;
   });
@@ -145,13 +145,13 @@ function wrapPromise(pluginObj: any, methodName: string, args: any[], opts: any
   // to error
   if (pluginResult && pluginResult.error) {
     p.catch(() => { });
-    rej(pluginResult.error);
+    typeof rej === 'function' && rej(pluginResult.error);
   }
   return p;
 }
 
 function wrapOtherPromise(pluginObj: any, methodName: string, args: any[], opts: any = {}) {
-  return getPromise((resolve, reject) => {
+  return getPromise((resolve: Function, reject: Function) => {
     const pluginResult = callCordovaPlugin(pluginObj, methodName, args, opts);
     if (pluginResult) {
       if (pluginResult.error) {
@@ -239,7 +239,7 @@ export function overrideFunction(pluginObj: any, methodName: string, args: any[]
  * @private
  */
 export const wrap = function(pluginObj: any, methodName: string, opts: CordovaOptions = {}) {
-  return (...args) => {
+  return (...args: any[]) => {
     if (opts.sync) {
       // Sync doesn't wrap the plugin with a promise or observable, it returns the result as-is
       return callCordovaPlugin(pluginObj, methodName, args, opts);
@@ -259,7 +259,7 @@ export const wrap = function(pluginObj: any, methodName: string, opts: CordovaOp
  * @private
  */
 export function wrapInstance(pluginObj: any, methodName: string, opts: any = {}) {
-  return (...args) => {
+  return (...args: any[]) => {
     if (opts.sync) {
 
       return callInstance(pluginObj, methodName, args, opts);
@@ -289,7 +289,7 @@ export function wrapInstance(pluginObj: any, methodName: string, opts: any = {})
 
     } else if (opts.otherPromise) {
 
-      return getPromise((resolve, reject) => {
+      return getPromise((resolve: Function, reject: Function) => {
         let result = callInstance(pluginObj, methodName, args, opts, resolve, reject);
         if (result && !result.error) {
           result.then(resolve, reject);
@@ -298,14 +298,14 @@ export function wrapInstance(pluginObj: any, methodName: string, opts: any = {})
 
     } else {
 
-      let pluginResult, rej;
-      const p = getPromise((resolve, reject) => {
+      let pluginResult: any, rej: Function;
+      const p = getPromise((resolve: Function, reject: Function) => {
         pluginResult = callInstance(pluginObj, methodName, args, opts, resolve, reject);
         rej = reject;
       });
       if (pluginResult && pluginResult.error) {
         p.catch(() => { });
-        rej(pluginResult.error);
+        typeof rej === 'function' && rej(pluginResult.error);
       }
       return p;
 
diff --git a/src/@ionic-native/core/util.ts b/src/@ionic-native/core/util.ts
index cfc43e5f1..31d0a4533 100644
--- a/src/@ionic-native/core/util.ts
+++ b/src/@ionic-native/core/util.ts
@@ -1,27 +1,28 @@
-declare var window: any;
+declare const window: any;
 
 /**
  * @private
  */
-export function get(obj, path) {
-  path = path.split('.');
-  for (let i = 0; i < path.length; i++) {
+export const get = (element: Element | Window, path: string): any => {
+  const paths: string[] = path.split('.');
+  let obj: any = element;
+  for (let i: number = 0; i < paths.length; i++) {
     if (!obj) { return null; }
-    obj = obj[path[i]];
+    obj = obj[paths[i]];
   }
   return obj;
-}
+};
 
 
 /**
  * @private
  */
-export function getPromise(cb) {
+export const getPromise = (callback: Function): Promise<any> => {
 
   const tryNativePromise = () => {
     if (window.Promise) {
       return new Promise((resolve, reject) => {
-        cb(resolve, reject);
+        callback(resolve, reject);
       });
     } else {
       console.error('No Promise support or polyfill found. To enable Ionic Native support, please add the es6-promise polyfill before this script, or run with a library like Angular 2 or on a recent browser.');
@@ -29,21 +30,21 @@ export function getPromise(cb) {
   };
 
   return tryNativePromise();
-}
+};
 
 /**
  * @private
  * @param pluginRef
  * @returns {null|*}
  */
-export function getPlugin(pluginRef: string): any {
+export const getPlugin = (pluginRef: string): any => {
   return get(window, pluginRef);
 };
 
 /**
  * @private
  */
-export const pluginWarn = function(pluginName: string, plugin?: string, method?: string) {
+export const pluginWarn = (pluginName: string, plugin?: string, method?: string): void => {
   if (method) {
     console.warn('Native: tried calling ' + pluginName + '.' + method + ', but the ' + pluginName + ' plugin is not installed.');
   } else {
@@ -59,7 +60,7 @@ export const pluginWarn = function(pluginName: string, plugin?: string, method?:
  * @param pluginName
  * @param method
  */
-export const cordovaWarn = function(pluginName: string, method?: string) {
+export const cordovaWarn = (pluginName: string, method?: string): void => {
   if (method) {
     console.warn('Native: tried calling ' + pluginName + '.' + method + ', but Cordova is not available. Make sure to include cordova.js or run in a device/simulator');
   } else {
diff --git a/src/@ionic-native/plugins/app-rate/index.ts b/src/@ionic-native/plugins/app-rate/index.ts
index 46388260f..99317a02a 100644
--- a/src/@ionic-native/plugins/app-rate/index.ts
+++ b/src/@ionic-native/plugins/app-rate/index.ts
@@ -1,9 +1,6 @@
 import { Injectable } from '@angular/core';
 import { Cordova, CordovaProperty, Plugin, IonicNativePlugin } from '@ionic-native/core';
 
-
-declare var window;
-
 export interface AppRatePreferences {
 
   /**
diff --git a/src/@ionic-native/plugins/background-fetch/index.ts b/src/@ionic-native/plugins/background-fetch/index.ts
index 2812ab1dd..67bcae52a 100644
--- a/src/@ionic-native/plugins/background-fetch/index.ts
+++ b/src/@ionic-native/plugins/background-fetch/index.ts
@@ -1,9 +1,6 @@
 import { Cordova, Plugin, IonicNativePlugin } from '@ionic-native/core';
 import { Injectable } from '@angular/core';
 
-declare var window;
-
-
 export interface BackgroundFetchConfig {
 
   /**
diff --git a/src/@ionic-native/plugins/background-geolocation/index.ts b/src/@ionic-native/plugins/background-geolocation/index.ts
index aba02ed21..fc7e94e4f 100644
--- a/src/@ionic-native/plugins/background-geolocation/index.ts
+++ b/src/@ionic-native/plugins/background-geolocation/index.ts
@@ -2,8 +2,6 @@ import { Injectable } from '@angular/core';
 import { Cordova, Plugin, IonicNativePlugin } from '@ionic-native/core';
 import { Observable } from 'rxjs/Observable';
 
-declare var window;
-
 export interface BackgroundGeolocationResponse {
 
   /**
diff --git a/src/@ionic-native/plugins/code-push/index.ts b/src/@ionic-native/plugins/code-push/index.ts
index b12908925..59b5591cf 100644
--- a/src/@ionic-native/plugins/code-push/index.ts
+++ b/src/@ionic-native/plugins/code-push/index.ts
@@ -109,8 +109,8 @@ interface LocalPackage_Static {
 }
 /* tslint:enable */
 
-declare var RemotePackage: RemotePackage_Static;
-declare var LocalPackage: LocalPackage_Static;
+declare const RemotePackage: RemotePackage_Static;
+declare const LocalPackage: LocalPackage_Static;
 
 /**
  * Defines the JSON format of the current package information file.
diff --git a/src/@ionic-native/plugins/contacts/index.ts b/src/@ionic-native/plugins/contacts/index.ts
index bdb3a7e90..4e17d4a00 100644
--- a/src/@ionic-native/plugins/contacts/index.ts
+++ b/src/@ionic-native/plugins/contacts/index.ts
@@ -1,7 +1,7 @@
 import { Injectable } from '@angular/core';
 import { CordovaInstance, InstanceProperty, Plugin, getPromise, InstanceCheck, checkAvailability, CordovaCheck, IonicNativePlugin } from '@ionic-native/core';
 
-declare var window: any,
+declare const window: any,
   navigator: any;
 
 export type ContactFieldType = '*' | 'addresses' | 'birthday' | 'categories' | 'country' | 'department' | 'displayName' | 'emails' | 'familyName' | 'formatted' | 'givenName' | 'honorificPrefix' | 'honorificSuffix' | 'id' | 'ims' | 'locality' | 'middleName' | 'name' | 'nickname' | 'note' | 'organizations' | 'phoneNumbers' | 'photos' | 'postalCode' | 'region' | 'streetAddress' | 'title' | 'urls';
@@ -49,6 +49,7 @@ export interface IContactProperties {
 
   /** An array of web pages associated with the contact. */
   urls?: IContactField[];
+
 }
 
 /**
@@ -71,6 +72,8 @@ export class Contact implements IContactProperties {
   @InstanceProperty categories: IContactField[];
   @InstanceProperty urls: IContactField[];
 
+  [key: string]: any;
+
   constructor() {
     if (checkAvailability('navigator.contacts', 'create', 'Contacts') === true) {
       this._objectInstance = navigator.contacts.create();
@@ -92,8 +95,8 @@ export class Contact implements IContactProperties {
 
   @InstanceCheck()
   save(): Promise<any> {
-    return getPromise((resolve, reject) => {
-      this._objectInstance.save((contact) => {
+    return getPromise((resolve: Function, reject: Function) => {
+      this._objectInstance.save((contact: any) => {
         this._objectInstance = contact;
         resolve(this);
       }, reject);
@@ -114,7 +117,7 @@ export interface IContactError {
 /**
  * @hidden
  */
-export declare var ContactError: {
+export declare const ContactError: {
   new (code: number): IContactError;
   UNKNOWN_ERROR: number;
   INVALID_ARGUMENT_ERROR: number;
@@ -312,8 +315,8 @@ export class Contacts extends IonicNativePlugin {
    */
   @CordovaCheck()
   find(fields: ContactFieldType[], options?: IContactFindOptions): Promise<Contact[]> {
-    return getPromise((resolve, reject) => {
-      navigator.contacts.find(fields, (contacts) => {
+    return getPromise((resolve: Function, reject: Function) => {
+      navigator.contacts.find(fields, (contacts: any[]) => {
         resolve(contacts.map(processContact));
       }, reject, options);
     });
@@ -325,8 +328,8 @@ export class Contacts extends IonicNativePlugin {
    */
   @CordovaCheck()
   pickContact(): Promise<Contact> {
-    return getPromise((resolve, reject) => {
-      navigator.contacts.pickContact((contact) => resolve(processContact(contact)), reject);
+    return getPromise((resolve: Function, reject: Function) => {
+      navigator.contacts.pickContact((contact: any) => resolve(processContact(contact)), reject);
     });
   }
 
@@ -335,7 +338,7 @@ export class Contacts extends IonicNativePlugin {
 /**
  * @hidden
  */
-function processContact(contact) {
+function processContact(contact: any) {
   let newContact = new Contact();
   for (let prop in contact) {
     if (typeof contact[prop] === 'function') continue;
diff --git a/src/@ionic-native/plugins/deeplinks/index.ts b/src/@ionic-native/plugins/deeplinks/index.ts
index cea92ba02..f48dcf0ab 100644
--- a/src/@ionic-native/plugins/deeplinks/index.ts
+++ b/src/@ionic-native/plugins/deeplinks/index.ts
@@ -98,7 +98,7 @@ export class Deeplinks extends IonicNativePlugin {
   @Cordova({
     observable: true
   })
-  route(paths): Observable<DeeplinkMatch> { return; }
+  route(paths: any): Observable<DeeplinkMatch> { return; }
 
   /**
    *
@@ -121,6 +121,6 @@ export class Deeplinks extends IonicNativePlugin {
   @Cordova({
     observable: true
   })
-  routeWithNavController(navController, paths): Observable<DeeplinkMatch> { return; }
+  routeWithNavController(navController: any, paths: any): Observable<DeeplinkMatch> { return; }
 
 }
diff --git a/src/@ionic-native/plugins/device/index.ts b/src/@ionic-native/plugins/device/index.ts
index 92a8cb57b..e2efd7e92 100644
--- a/src/@ionic-native/plugins/device/index.ts
+++ b/src/@ionic-native/plugins/device/index.ts
@@ -1,7 +1,7 @@
 import { Injectable } from '@angular/core';
 import { CordovaProperty, Plugin, IonicNativePlugin } from '@ionic-native/core';
 
-declare var window: any;
+declare const window: any;
 
 /**
  * @name Device
diff --git a/src/@ionic-native/plugins/dialogs/index.ts b/src/@ionic-native/plugins/dialogs/index.ts
index 72fc98d3e..04ae9166a 100644
--- a/src/@ionic-native/plugins/dialogs/index.ts
+++ b/src/@ionic-native/plugins/dialogs/index.ts
@@ -75,7 +75,7 @@ export class Dialogs extends IonicNativePlugin {
     successIndex: 1,
     errorIndex: 4
   })
-  confirm(message, title?: string, buttonLabels?: string[]): Promise<number> { return; }
+  confirm(message: string, title?: string, buttonLabels?: string[]): Promise<number> { return; }
 
   /**
    * Displays a native dialog box that is more customizable than the browser's prompt function.
diff --git a/src/@ionic-native/plugins/email-composer/index.ts b/src/@ionic-native/plugins/email-composer/index.ts
index 41c08680c..fb21df3d7 100644
--- a/src/@ionic-native/plugins/email-composer/index.ts
+++ b/src/@ionic-native/plugins/email-composer/index.ts
@@ -1,7 +1,11 @@
 import { Injectable } from '@angular/core';
 import { Cordova, Plugin, CordovaCheck, IonicNativePlugin } from '@ionic-native/core';
 
-declare var cordova: any;
+interface Cordova {
+  plugins: CordovaPlugins & { email: any };
+}
+
+declare const cordova: Cordova;
 
 export interface EmailComposerOptions {
 
@@ -88,7 +92,7 @@ export class EmailComposer extends IonicNativePlugin {
   isAvailable(app?: string): Promise<any> {
     return new Promise<boolean>((resolve, reject) => {
       if (app) {
-        cordova.plugins.email.isAvailable(app, (isAvailable) => {
+        cordova.plugins.email.isAvailable(app, (isAvailable: boolean) => {
           if (isAvailable) {
             resolve();
           } else {
@@ -96,7 +100,7 @@ export class EmailComposer extends IonicNativePlugin {
           }
         });
       } else {
-        cordova.plugins.email.isAvailable((isAvailable) => {
+        cordova.plugins.email.isAvailable((isAvailable: boolean) => {
           if (isAvailable) {
             resolve();
           } else {
diff --git a/src/@ionic-native/plugins/file-path/index.ts b/src/@ionic-native/plugins/file-path/index.ts
index 476db1c5d..29dc9b719 100644
--- a/src/@ionic-native/plugins/file-path/index.ts
+++ b/src/@ionic-native/plugins/file-path/index.ts
@@ -1,7 +1,7 @@
 import { Injectable } from '@angular/core';
 import { Plugin, Cordova, IonicNativePlugin } from '@ionic-native/core';
 
-declare var window: any;
+declare const window: any;
 
 /**
  * @name File Path
diff --git a/src/@ionic-native/plugins/file/index.ts b/src/@ionic-native/plugins/file/index.ts
index c0b5d8ba0..63d1021b9 100644
--- a/src/@ionic-native/plugins/file/index.ts
+++ b/src/@ionic-native/plugins/file/index.ts
@@ -517,6 +517,11 @@ export declare class FileReader {
   readAsBinaryString(fe: IFile): void;
   readAsArrayBuffer(fe: IFile): void;
 
+  /**
+   * @hidden
+   */
+  [key: string]: any;
+
 }
 
 interface Window extends LocalFileSystem {}
@@ -630,7 +635,7 @@ export class File extends IonicNativePlugin {
   @CordovaProperty
   sharedDirectory: string;
 
-  cordovaFileError: {} = {
+  cordovaFileError: any = {
     1: 'NOT_FOUND_ERR',
     2: 'SECURITY_ERR',
     3: 'ABORT_ERR',
diff --git a/src/@ionic-native/plugins/geofence/index.ts b/src/@ionic-native/plugins/geofence/index.ts
index 25bfbe887..b0bf3c619 100644
--- a/src/@ionic-native/plugins/geofence/index.ts
+++ b/src/@ionic-native/plugins/geofence/index.ts
@@ -2,7 +2,7 @@ import { Injectable } from '@angular/core';
 import { Cordova, Plugin, CordovaFunctionOverride, IonicNativePlugin } from '@ionic-native/core';
 import { Observable } from 'rxjs/Observable';
 
-declare var window: any;
+declare const window: any;
 
 /**
  * @name Geofence
diff --git a/src/@ionic-native/plugins/geolocation/index.ts b/src/@ionic-native/plugins/geolocation/index.ts
index 3b1c100d3..16df4619d 100644
--- a/src/@ionic-native/plugins/geolocation/index.ts
+++ b/src/@ionic-native/plugins/geolocation/index.ts
@@ -2,7 +2,7 @@ import { Injectable } from '@angular/core';
 import { Cordova, Plugin, IonicNativePlugin } from '@ionic-native/core';
 import { Observable } from 'rxjs/Observable';
 
-declare var navigator: any;
+declare const navigator: any;
 
 export interface Coordinates {
 
@@ -174,7 +174,7 @@ export class Geolocation extends IonicNativePlugin {
    * Observable changes.
    *
    * ```typescript
-   * var subscription = this.geolocation.watchPosition()
+   * const subscription = this.geolocation.watchPosition()
    *                               .filter((p) => p.coords !== undefined) //Filter Out Errors
    *                               .subscribe(position => {
    *   console.log(position.coords.longitude + ' ' + position.coords.latitude);
diff --git a/src/@ionic-native/plugins/google-analytics/index.ts b/src/@ionic-native/plugins/google-analytics/index.ts
index 49a55b6b8..7dc4cba48 100644
--- a/src/@ionic-native/plugins/google-analytics/index.ts
+++ b/src/@ionic-native/plugins/google-analytics/index.ts
@@ -1,8 +1,6 @@
 import { Injectable } from '@angular/core';
 import { Cordova, Plugin, IonicNativePlugin } from '@ionic-native/core';
 
-declare var window;
-
 /**
  * @name Google Analytics
  * @description
diff --git a/src/@ionic-native/plugins/google-maps/index.ts b/src/@ionic-native/plugins/google-maps/index.ts
index 851db1253..9d386529e 100644
--- a/src/@ionic-native/plugins/google-maps/index.ts
+++ b/src/@ionic-native/plugins/google-maps/index.ts
@@ -3,7 +3,7 @@ import { Cordova, CordovaInstance, CordovaCheck, Plugin, InstanceProperty, Insta
 import { Observable } from 'rxjs/Observable';
 import 'rxjs/add/observable/fromEvent';
 
-declare var plugin: any;
+declare const plugin: any;
 
 /**
  * @hidden
@@ -1473,7 +1473,7 @@ export class GroundOverlay {
       return Promise.reject({ error: 'plugin_not_installed' });
     }
     return new Promise<any>(
-      resolve => this._objectInstance.addListenerOnce(eventName, resolve)
+      (resolve: Function) => this._objectInstance.addListenerOnce(eventName, resolve)
     );
   }
 
@@ -1766,7 +1766,7 @@ export class Geocoder {
    */
   @CordovaCheck()
   geocode(request: GeocoderRequest): Promise<GeocoderResult[] | any> {
-    return new Promise<GeocoderResult[]>(resolve => {
+    return new Promise<GeocoderResult[]>((resolve: Function) => {
       plugin.google.maps.Geocoder.geocode(request, resolve);
     });
   }
diff --git a/src/@ionic-native/plugins/gyroscope/index.ts b/src/@ionic-native/plugins/gyroscope/index.ts
index 84ea35cee..87af80f2a 100644
--- a/src/@ionic-native/plugins/gyroscope/index.ts
+++ b/src/@ionic-native/plugins/gyroscope/index.ts
@@ -2,7 +2,7 @@ import { Plugin, Cordova, IonicNativePlugin } from '@ionic-native/core';
 import { Observable } from 'rxjs/Observable';
 import { Injectable } from '@angular/core';
 
-declare var navigator: any;
+declare const navigator: any;
 
 /**
  *  @hidden
diff --git a/src/@ionic-native/plugins/ibeacon/index.ts b/src/@ionic-native/plugins/ibeacon/index.ts
index a29961256..66c7fbc77 100644
--- a/src/@ionic-native/plugins/ibeacon/index.ts
+++ b/src/@ionic-native/plugins/ibeacon/index.ts
@@ -2,7 +2,7 @@ import { Injectable } from '@angular/core';
 import { Cordova, Plugin, CordovaCheck, IonicNativePlugin } from '@ionic-native/core';
 import { Observable } from 'rxjs/Observable';
 
-declare var cordova: any;
+declare const cordova: any;
 
 export interface Beacon {
   /**
diff --git a/src/@ionic-native/plugins/in-app-browser/index.ts b/src/@ionic-native/plugins/in-app-browser/index.ts
index 8a9ab0ef9..922bddbe9 100644
--- a/src/@ionic-native/plugins/in-app-browser/index.ts
+++ b/src/@ionic-native/plugins/in-app-browser/index.ts
@@ -3,7 +3,7 @@ import { Plugin, CordovaInstance, IonicNativePlugin } from '@ionic-native/core';
 import { Observable } from 'rxjs/Observable';
 import 'rxjs/add/observable/fromEvent';
 
-declare var cordova: any;
+declare const cordova: Cordova & { InAppBrowser: any; };
 
 export interface InAppBrowserOptions {
   /** Set to yes or no to turn the InAppBrowser's location bar on or off. */
@@ -48,6 +48,11 @@ export interface InAppBrowserOptions {
   /** (Windows only) Set to yes to create the browser control without a border around it.
    * Please note that if location=no is also specified, there will be no control presented to user to close IAB window. */
   fullscreen?: 'yes';
+
+  /**
+   * @hidden
+   */
+  [key: string]: any;
 }
 export interface InAppBrowserEvent extends Event {
   /** the eventname, either loadstart, loadstop, loaderror, or exit. */
@@ -80,12 +85,18 @@ export class InAppBrowserObject {
    */
   constructor(url: string, target?: string, options?: string | InAppBrowserOptions) {
     try {
-      if (options && typeof options !== 'string')
-        options = Object.keys(options).map(key => `${key}=${options[key]}`).join(',');
+
+      if (options && typeof options !== 'string') {
+        options = Object.keys(options).map((key: string) => `${key}=${(<InAppBrowserOptions>options)[key]}`).join(',');
+      }
+
       this._objectInstance = cordova.InAppBrowser.open(url, target, options);
+
     } catch (e) {
-      window.open(url);
+
+      window.open(url, target);
       console.warn('Native: InAppBrowser is not installed or you are running on a browser. Falling back to window.open.');
+
     }
   }
 
diff --git a/src/@ionic-native/plugins/intel-security/index.ts b/src/@ionic-native/plugins/intel-security/index.ts
index 5b5df381d..9b28c5bc2 100644
--- a/src/@ionic-native/plugins/intel-security/index.ts
+++ b/src/@ionic-native/plugins/intel-security/index.ts
@@ -1,7 +1,7 @@
 import { Plugin, Cordova, IonicNativePlugin } from '@ionic-native/core';
 import { Injectable } from '@angular/core';
 
-declare var window: any;
+declare const window: any;
 
 export interface IntelSecurityDataOptions {
   /** Non-empty string. **/
diff --git a/src/@ionic-native/plugins/jins-meme/index.ts b/src/@ionic-native/plugins/jins-meme/index.ts
index 7f99c5c68..349a905aa 100644
--- a/src/@ionic-native/plugins/jins-meme/index.ts
+++ b/src/@ionic-native/plugins/jins-meme/index.ts
@@ -2,7 +2,7 @@ import { Injectable } from '@angular/core';
 import { Plugin, Cordova, CordovaCheck, IonicNativePlugin } from '@ionic-native/core';
 import { Observable } from 'rxjs/Observable';
 
-declare var cordova: any;
+declare const cordova: any;
 
 /**
  * @name Jins Meme
diff --git a/src/@ionic-native/plugins/media-capture/index.ts b/src/@ionic-native/plugins/media-capture/index.ts
index 301a39344..136380184 100644
--- a/src/@ionic-native/plugins/media-capture/index.ts
+++ b/src/@ionic-native/plugins/media-capture/index.ts
@@ -2,7 +2,7 @@ import { Injectable } from '@angular/core';
 import { Cordova, CordovaProperty, Plugin, IonicNativePlugin } from '@ionic-native/core';
 import { Observable } from 'rxjs/Observable';
 
-declare var navigator: any;
+declare const navigator: any;
 
 export interface MediaFile {
   /**
@@ -33,7 +33,7 @@ export interface MediaFile {
    * @param {Function} successCallback
    * @param {Function} errorCallback
    */
-  getFormatData(successCallback: (data: MediaFileData) => any, errorCallback?: (err: any) => any);
+  getFormatData(successCallback: (data: MediaFileData) => any, errorCallback?: (err: any) => any): void;
 }
 
 export interface MediaFileData {
diff --git a/src/@ionic-native/plugins/media/index.ts b/src/@ionic-native/plugins/media/index.ts
index 576442f86..ac18d6717 100644
--- a/src/@ionic-native/plugins/media/index.ts
+++ b/src/@ionic-native/plugins/media/index.ts
@@ -1,7 +1,7 @@
 import { Injectable } from '@angular/core';
 import { CordovaInstance, Plugin, CordovaCheck, IonicNativePlugin } from '@ionic-native/core';
 
-declare var Media: any;
+declare const Media: any;
 
 
 /**
@@ -169,7 +169,7 @@ export type MediaErrorCallback = (error: MediaError) => void;
  *   window.setTimeout(() => file.stopRecord(), 10000);
  * });
  * ```
- * 
+ *
  * You can find the reasons here: https://github.com/driftyco/ionic-native/issues/1452#issuecomment-299605906
  *
  * @usage
diff --git a/src/@ionic-native/plugins/paypal/index.ts b/src/@ionic-native/plugins/paypal/index.ts
index 73005120d..1f8fecd52 100644
--- a/src/@ionic-native/plugins/paypal/index.ts
+++ b/src/@ionic-native/plugins/paypal/index.ts
@@ -1,5 +1,6 @@
 import { Injectable } from '@angular/core';
 import { Plugin, Cordova, IonicNativePlugin } from '@ionic-native/core';
+
 /**
  * @name PayPal
  * @description
@@ -383,6 +384,11 @@ export interface PayPalConfigurationOptions {
    * PIN to use for sandbox if 'forceDefaultsInSandbox' is set.
    */
   sandboxUserPin?: string;
+
+  /**
+   * @hidden
+   */
+  [key: string]: any;
 }
 /**
  * @hidden
@@ -413,7 +419,7 @@ export class PayPalConfiguration implements PayPalConfigurationOptions {
     };
 
     if (options && typeof options === 'object') {
-      for (var i in options) {
+      for (let i in options) {
         if (defaults.hasOwnProperty(i)) {
           defaults[i] = options[i];
         }
diff --git a/src/@ionic-native/plugins/screen-orientation/index.ts b/src/@ionic-native/plugins/screen-orientation/index.ts
index 3baf6c7a4..5f79cb42a 100644
--- a/src/@ionic-native/plugins/screen-orientation/index.ts
+++ b/src/@ionic-native/plugins/screen-orientation/index.ts
@@ -2,8 +2,6 @@ import { Injectable } from '@angular/core';
 import { Cordova, CordovaProperty, Plugin, IonicNativePlugin } from '@ionic-native/core';
 import { Observable } from 'rxjs/Observable';
 
-declare var window;
-
 /**
  * @name Screen Orientation
  * @description
diff --git a/src/@ionic-native/plugins/screenshot/index.ts b/src/@ionic-native/plugins/screenshot/index.ts
index 7e4926948..0ee4c620b 100644
--- a/src/@ionic-native/plugins/screenshot/index.ts
+++ b/src/@ionic-native/plugins/screenshot/index.ts
@@ -1,8 +1,8 @@
 import { Injectable } from '@angular/core';
 import { Plugin, IonicNativePlugin } from '@ionic-native/core';
 
+declare const navigator: any;
 
-declare var navigator: any;
 /**
  * @name Screenshot
  * @description Captures a screen shot
@@ -44,7 +44,7 @@ export class Screenshot extends IonicNativePlugin {
     return new Promise<any>(
       (resolve, reject) => {
         navigator.screenshot.save(
-          (error, result) => {
+          (error: any, result: any) => {
             if (error) {
               reject(error);
             } else {
@@ -70,7 +70,7 @@ export class Screenshot extends IonicNativePlugin {
     return new Promise<any>(
       (resolve, reject) => {
         navigator.screenshot.URI(
-          (error, result) => {
+          (error: any, result: any) => {
             if (error) {
               reject(error);
             } else {
diff --git a/src/@ionic-native/plugins/status-bar/index.ts b/src/@ionic-native/plugins/status-bar/index.ts
index f0f6780d4..efeaaf169 100644
--- a/src/@ionic-native/plugins/status-bar/index.ts
+++ b/src/@ionic-native/plugins/status-bar/index.ts
@@ -1,9 +1,6 @@
 import { Injectable } from '@angular/core';
 import { Cordova, CordovaProperty, Plugin, IonicNativePlugin } from '@ionic-native/core';
 
-
-declare var window;
-
 /**
  * @name Status Bar
  * @description
diff --git a/src/@ionic-native/plugins/transfer/index.ts b/src/@ionic-native/plugins/transfer/index.ts
index 2d063a117..bf1cc0d92 100644
--- a/src/@ionic-native/plugins/transfer/index.ts
+++ b/src/@ionic-native/plugins/transfer/index.ts
@@ -1,7 +1,7 @@
 import { Injectable } from '@angular/core';
 import { CordovaInstance, Plugin, InstanceCheck, checkAvailability, IonicNativePlugin } from '@ionic-native/core';
 
-declare var FileTransfer;
+declare const FileTransfer: any;
 
 export interface FileUploadOptions {
 
diff --git a/src/@ionic-native/plugins/video-capture-plus/index.ts b/src/@ionic-native/plugins/video-capture-plus/index.ts
index 25a1e479b..1daaf6132 100644
--- a/src/@ionic-native/plugins/video-capture-plus/index.ts
+++ b/src/@ionic-native/plugins/video-capture-plus/index.ts
@@ -28,9 +28,9 @@ export interface MediaFile {
   /**
    * Retrieves the format information of the media file.
    * @param {Function} successCallback
-   * @param {Function} errorCallback
+   * @param {Function} [errorCallback]
    */
-  getFormatData(successCallback: (data: MediaFileData) => any, errorCallback?: (err: any) => any);
+  getFormatData(successCallback: (data: MediaFileData) => any, errorCallback?: (err: any) => any): any;
 }
 
 export interface MediaFileData {
diff --git a/src/@ionic-native/plugins/web-intent/index.ts b/src/@ionic-native/plugins/web-intent/index.ts
index de003179a..cf98d0dca 100644
--- a/src/@ionic-native/plugins/web-intent/index.ts
+++ b/src/@ionic-native/plugins/web-intent/index.ts
@@ -2,8 +2,6 @@ import { Injectable } from '@angular/core';
 import { Cordova, CordovaProperty, Plugin, IonicNativePlugin } from '@ionic-native/core';
 import { Observable } from 'rxjs/Observable';
 
-declare var window;
-
 /**
  * @beta
  * @name Web Intent
diff --git a/tsconfig.json b/tsconfig.json
index 30a6d65e8..9c5e2615a 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -5,6 +5,7 @@
     "stripInternal": true,
     "experimentalDecorators": true,
     "emitDecoratorMetadata": true,
+    "noImplicitAny": true,
     "module": "es2015",
     "moduleResolution": "node",
     "paths": {