[internals][js] remove legacy `options` arg for module constructors and cleanup constructor args

src/modules/database/index.js

@@ -32,17 +32,21 @@ export default class Database extends ModuleBase {
 
   _serviceUrl: string;
 
-  constructor(appOrUrl: App | string, options: Object = {}) {
+  constructor(appOrCustomUrl: App | string, customUrl?: string) {
     let app;
-    let serviceUrl;
-    if (typeof appOrUrl === 'string') {
+    let url;
+
+    if (typeof appOrCustomUrl === 'string') {
       app = firebase.app();
-      serviceUrl = appOrUrl.endsWith('/') ? appOrUrl : `${appOrUrl}/`;
+      url = appOrCustomUrl;
     } else {
-      app = appOrUrl;
-      serviceUrl = app.options.databaseURL;
+      app = appOrCustomUrl;
+      url = customUrl || app.options.databaseURL;
     }
 
+    // enforce trailing slash
+    url = url.endsWith('/') ? url : `${url}/`;
+
     super(
       app,
       {
@@ -52,15 +56,15 @@ export default class Database extends ModuleBase {
         hasCustomUrlSupport: true,
         namespace: NAMESPACE,
       },
-      serviceUrl
+      url
     );
 
     this._serverTimeOffset = 0;
     this._serviceUrl = serviceUrl;
     this._transactionHandler = new TransactionHandler(this);
 
-    if (options.persistence) {
-      getNativeModule(this).setPersistence(options.persistence);
+    if (app.options.persistence) {
+      getNativeModule(this).setPersistence(app.options.persistence);
     }
 
     // server time listener

src/modules/functions/index.js

@@ -40,16 +40,19 @@ function errorOrResult(possibleError): HttpsCallablePromise {
   return Promise.resolve(possibleError);
 }
 
+/**
+ * -------------
+ *  functions()
+ * -------------
+ */
 export default class Functions extends ModuleBase {
-  _region: string;
-
-  constructor(appOrRegion: App, region: string = 'us-central1') {
+  constructor(appOrRegion: App, region?: string = 'us-central1') {
     let _app = appOrRegion;
     let _region = region;
 
-    if (typeof appOrRegion === 'string') {
+    if (typeof _app === 'string') {
+      _region = _app;
       _app = firebase.app();
-      _region = appOrRegion;
     }
 
     super(
@@ -77,7 +80,7 @@ export default class Functions extends ModuleBase {
    */
   httpsCallable(name: string): HttpsCallable {
     return (data?: any): HttpsCallablePromise => {
-      const promise = getNativeModule(this).httpsCallable(this._region, name, {
+      const promise = getNativeModule(this).httpsCallable(name, {
         data,
       });
 

src/utils/apps.js

@@ -69,8 +69,8 @@ export default {
 
       if (!APP_MODULES[appInstanceIdentifier][namespace]) {
         APP_MODULES[appInstanceIdentifier][namespace] = new InstanceClass(
-          customUrlOrRegion || app,
-          app.options
+          app,
+          customUrlOrRegion
         );
 
         // only check once on new app namespace instance
@@ -185,9 +185,12 @@ export default {
     statics: S,
     moduleName: FirebaseModuleName
   ): FirebaseModuleAndStatics<M, S> {
-    const getModule = (appOrUrlOrRegion?: App | string): FirebaseModule => {
+    const getModule = (
+      appOrUrlOrRegion?: App | string,
+      customUrlOrRegion?: string
+    ): FirebaseModule => {
       let _app = appOrUrlOrRegion;
-      let _customUrlOrRegion: ?string = null;
+      let _customUrlOrRegion: ?string = customUrlOrRegion || null;
 
       if (typeof appOrUrlOrRegion === 'string' && namespace === 'database') {
         _app = null;

src/utils/native.js

@@ -42,7 +42,13 @@ export const initialiseNativeModule = (
   config: FirebaseModuleConfig,
   customUrlOrRegion: ?string
 ): Object => {
-  const { moduleName, hasMultiAppSupport, hasCustomUrlSupport, hasRegionsSupport, namespace } = config;
+  const {
+    moduleName,
+    hasMultiAppSupport,
+    hasCustomUrlSupport,
+    hasRegionsSupport,
+    namespace,
+  } = config;
   const nativeModule = NativeModules[moduleName];
   const key = nativeModuleKey(module);