Added a util function that checks that local/session storage is enabled. Also added tests using this function to report an error to the user if it is not enabled

web/react/components/login.jsx

@@ -21,6 +21,12 @@ var FindTeamDomain = React.createClass({
             return;
         }
 
+        if (!utils.isLocalStorageSupported()) {
+            state.server_error = "This service requires local storage to be enabled. Please enable it or exit private browsing.";
+            this.setState(state);
+            return;
+        }
+
         state.server_error = "";
         this.setState(state);
 
@@ -94,7 +100,7 @@ module.exports = React.createClass({
             return;
         }
 
-       var email = this.refs.email.getDOMNode().value.trim();
+        var email = this.refs.email.getDOMNode().value.trim();
         if (!email) {
             state.server_error = "An email is required"
             this.setState(state);
@@ -108,6 +114,12 @@ module.exports = React.createClass({
             return;
         }
 
+        if (!utils.isLocalStorageSupported()) {
+            state.server_error = "This service requires local storage to be enabled. Please enable it or exit private browsing.";
+            this.setState(state);
+            return;
+        }
+
         state.server_error = "";
         this.setState(state);
 

web/react/components/signup_team_complete.jsx

@@ -9,6 +9,10 @@ var constants = require('../utils/constants.jsx')
 
 WelcomePage = React.createClass({
     submitNext: function (e) {
+        if (!utils.isLocalStorageSupported()) {
+            this.setState({ storage_error: "This service requires local storage to be enabled. Please enable it or exit private browsing."} );
+            return;
+        }
         e.preventDefault();
         this.props.state.wizard = "team_name";
         this.props.updateParent(this.props.state);
@@ -26,6 +30,12 @@ WelcomePage = React.createClass({
         if (!email || !utils.isEmail(email)) {
             state.email_error = "Please enter a valid email address";
             this.setState(state);
+            return;
+        }
+        else if (!utils.isLocalStorageSupported()) {
+            state.email_error = "This service requires local storage to be enabled. Please enable it or exit private browsing.";
+            this.setState(state);
+            return;
         }
         else {
             state.email_error = "";
@@ -50,6 +60,7 @@ WelcomePage = React.createClass({
 
         client.track('signup', 'signup_team_01_welcome');
 
+        var storage_error = this.state.storage_error ? <label className="control-label">{ this.state.storage_error }</label> : null;
         var email_error = this.state.email_error ? <label className="control-label">{ this.state.email_error }</label> : null;
         var server_error = this.state.server_error ? <div className={ "form-group has-error" }><label className="control-label">{ this.state.server_error }</label></div> : null;
 
@@ -66,6 +77,7 @@ WelcomePage = React.createClass({
                 </p>
                 <div className="form-group">
                     <button className="btn-primary btn form-group" onClick={this.submitNext}><i className="glyphicon glyphicon-ok"></i>Yes, this address is correct</button>
+                    { storage_error }
                 </div>
                 <hr />
                 <p>If this is not correct, you can switch to a different email. We'll send you a new invite right away.</p>

web/react/utils/utils.jsx

@@ -96,6 +96,21 @@ module.exports.getCookie = function(name) {
   if (parts.length == 2) return parts.pop().split(";").shift();
 }
 
+module.exports.isLocalStorageSupported = function() {
+    try {
+        sessionStorage.setItem("testSession", '1');
+        sessionStorage.removeItem("testSession");
+
+        localStorage.setItem("testLocal", '1');
+        localStorage.removeItem("testLocal", '1');
+
+        return true;
+    } 
+    catch (e) {
+        return false;
+    }
+}
+
 module.exports.notifyMe = function(title, body, channel) {
   if ("Notification" in window && Notification.permission !== 'denied') {
     Notification.requestPermission(function (permission) {