Fix type annotations for strict

src/helpers/app-store.helper.ts

@@ -3,23 +3,23 @@ import { IAppleStoreInfos, IAppleStoreResult } from '../interfaces'
 import { ResponseHelper } from './'
 
 export class AppStoreHelper {
-  static getAppInfos(bundleID, countryCode?) {
+  static getAppInfos(bundleID: string, countryCode?: string): Promise<IAppleStoreResult | null> {
     return AppStoreHelper._getLookupFile(bundleID, countryCode)
       .then(ResponseHelper.handleErrorStatus)
       .then(response => response.json())
       .then(AppStoreHelper._parseResource)
   }
 
-  private static _getLookupFile(bundleID, countryCode?) {
+  private static _getLookupFile(bundleID: string, countryCode?: string) {
     return fetch(AppStoreHelper._getItunesLookupUrl(bundleID, countryCode))
   }
 
-  private static _parseResource(resource: IAppleStoreInfos): IAppleStoreResult {
+  private static _parseResource(resource: IAppleStoreInfos): IAppleStoreResult | null {
     if (resource.resultCount === 0) return null
     return resource.results[0]
   }
 
-  private static _getItunesLookupUrl(bundleId, countryCode?): string {
+  private static _getItunesLookupUrl(bundleId: string, countryCode?: string): string {
     let url = `${AppStoreConstants.ITUNES_BASE_URL}/lookup?bundleId=${bundleId}`
     if (countryCode) {
       url += `&hl=${countryCode}`

src/helpers/google-play.helper.ts

@@ -3,28 +3,28 @@ import { IGoogleStoreResult } from '../interfaces'
 import { ResponseHelper } from './'
 
 export class GooglePlayHelper {
-  static getAppInfos(bundleId, countryCode?) {
+  static getAppInfos(bundleId: string, countryCode?: string): Promise<IGoogleStoreResult> {
     return GooglePlayHelper._getAppPage(bundleId, countryCode)
       .then(ResponseHelper.handleErrorStatus)
       .then(response => response.text())
       .then(GooglePlayHelper._parseResource)
   }
 
-  private static _getAppPage(bundleId, countryCode?) {
+  private static _getAppPage(bundleId: string, countryCode?: string): Promise<Response> {
     return fetch(GooglePlayHelper._getStoreAppUrl(bundleId, countryCode))
   }
 
-  private static _parseResource(page): IGoogleStoreResult {
+  private static _parseResource(page: string): IGoogleStoreResult {
     const infos: any = {}
     Object.keys(GooglePlayConstants.REGEX).map(key => {
       // we force a new regex creation to allow multiple calls on the same regex
-      const regEx = new RegExp(GooglePlayConstants.REGEX[key].source, 'gm').exec(page)
+      const regEx = new RegExp(GooglePlayConstants.REGEX[key as keyof typeof GooglePlayConstants.REGEX].source, 'gm').exec(page)
       infos[key.toLowerCase()] = regEx ? regEx[1] : null
     })
     return infos
   }
 
-  private static _getStoreAppUrl(bundleId, countryCode?): string {
+  private static _getStoreAppUrl(bundleId: string, countryCode?: string): string {
     let url = `${GooglePlayConstants.PLAY_STORE_ROOT_WEB}?id=${bundleId}`
     if (countryCode) {
       url += `&hl=${countryCode}`

src/helpers/locales.helper.ts

@@ -2,7 +2,7 @@ export class LocalesHelper {
   static currentLang = 'en'
 
   private static _defaultLang = 'en'
-  private static _translations = {
+  private static _translations: { [langKey: string]: any; } = {
     en: require('../i18n/en.json'),
     fr: require('../i18n/fr.json'),
     es: require('../i18n/es.json')

src/helpers/response.helper.ts

@@ -1,3 +1,4 @@
+/// <reference lib="dom" />
 export class ResponseHelper {
   static handleErrorStatus(response: Response): Response {
     if (response.status >= 400) {