fix: add guard for navigator for use in envs that do no support navigator (#542)

Author: kevinpagtakhan

package.json

@@ -20,7 +20,7 @@
     "@babel/runtime": "^7.3.4",
     "blueimp-md5": "^2.10.0",
     "query-string": "5",
-    "@amplitude/analytics-connector": "1.4.3"
+    "@amplitude/analytics-connector": "1.4.4"
   },
   "devDependencies": {
     "@amplitude/eslint-plugin-amplitude": "^1.0.1",

src/amplitude-client.js

@@ -39,7 +39,6 @@ var AmplitudeClient = function AmplitudeClient(instanceName) {
   this._instanceName = utils.isEmptyString(instanceName) ? Constants.DEFAULT_INSTANCE : instanceName.toLowerCase();
   this._unsentEvents = [];
   this._unsentIdentifys = [];
-  this._ua = new UAParser(navigator.userAgent).getResult();
   this.options = { ...DEFAULT_OPTIONS, trackingOptions: { ...DEFAULT_OPTIONS.trackingOptions } };
   this.cookieStorage = new cookieStorage().getStorage();
   this._q = []; // queue for proxied functions before script load
@@ -61,7 +60,8 @@ var AmplitudeClient = function AmplitudeClient(instanceName) {
   // used to integrate with experiment SDK (client-side exposure tracking & real-time user properties)
   this._connector = null;
 
-  this._userAgent = (navigator && navigator.userAgent) || null;
+  this._userAgent = (typeof navigator !== 'undefined' && navigator && navigator.userAgent) || null;
+  this._ua = new UAParser(this._userAgent).getResult();
 };
 
 AmplitudeClient.prototype.Identify = Identify;
@@ -249,7 +249,7 @@ AmplitudeClient.prototype.init = function init(apiKey, opt_userId, opt_config, o
     }
 
     const onExitPage = this.options.onExitPage;
-    if (type(onExitPage) === 'function') {
+    if (type(onExitPage) === 'function' && GlobalScope.addEventListener) {
       if (!this.pageHandlersAdded) {
         this.pageHandlersAdded = true;
 
@@ -1865,7 +1865,7 @@ AmplitudeClient.prototype.sendEvents = function sendEvents() {
     checksum: md5(Constants.API_VERSION + this.options.apiKey + events + uploadTime),
   };
 
-  if (this.options.transport === Constants.TRANSPORT_BEACON) {
+  if (this.options.transport === Constants.TRANSPORT_BEACON && typeof navigator !== 'undefined') {
     const success = navigator.sendBeacon(url, new URLSearchParams(data));
 
     if (success) {

src/get-host.js

@@ -1,18 +1,19 @@
 import GlobalScope from './global-scope';
 
 const getHost = (url) => {
+  const defaultHostname = GlobalScope.location ? GlobalScope.location.hostname : '';
   if (url) {
     if (typeof document !== 'undefined') {
       const a = document.createElement('a');
       a.href = url;
-      return a.hostname || GlobalScope.location.hostname;
+      return a.hostname || defaultHostname;
     }
     if (typeof URL === 'function') {
       const u = new URL(url);
-      return u.hostname || GlobalScope.location.hostname;
+      return u.hostname || defaultHostname;
     }
   }
-  return GlobalScope.location.hostname;
+  return defaultHostname;
 };
 
 export default getHost;

src/metadata-storage.js

@@ -35,8 +35,8 @@ class MetadataStorage {
     this.expirationDays = expirationDays;
 
     this.cookieDomain = '';
-
-    const writableTopDomain = topDomain(getLocation().href);
+    const loc = getLocation() ? getLocation().href : undefined;
+    const writableTopDomain = topDomain(loc);
     this.cookieDomain = domain || (writableTopDomain ? '.' + writableTopDomain : null);
 
     if (storageOptionExists[storage]) {

src/utils.js

@@ -119,7 +119,7 @@ const validateTransport = function validateTransport(transport) {
     return false;
   }
 
-  if (transport !== constants.TRANSPORT_HTTP && !navigator.sendBeacon) {
+  if (transport !== constants.TRANSPORT_HTTP && typeof navigator !== 'undefined' && !navigator.sendBeacon) {
     log.error(`browser does not support sendBeacon, so transport must be HTTP`);
     return false;
   }

yarn.lock

@@ -2,10 +2,10 @@
 # yarn lockfile v1
 
 
-"@amplitude/analytics-connector@1.4.3":
-  version "1.4.3"
-  resolved "https://registry.yarnpkg.com/@amplitude/analytics-connector/-/analytics-connector-1.4.3.tgz#cb9098cb8adfbd39b2c71ad71a7c758504a745a7"
-  integrity sha512-Ghu1UJn55Rn9eglF+ED7yOGXaeX3KY2qkQi9W9yqC02ItPvKfrybeVndweI1XtsiW0LvRpdA3uQEjuZEGunyLw==
+"@amplitude/analytics-connector@1.4.4":
+  version "1.4.4"
+  resolved "https://registry.yarnpkg.com/@amplitude/analytics-connector/-/analytics-connector-1.4.4.tgz#3bed72b0b3190a4426a529473ced962892706116"
+  integrity sha512-6JcE1nxrprJt6pHqqDQb7FXRqJmFHG7KJPe0jNZaAvfll4mWKVqZu8W9IV3XiN1P+xgHIV1NN+i3PLOAZWEhXg==
   dependencies:
     "@amplitude/ua-parser-js" "0.7.31"