feat: Improved error filtering and reporting (#1293)

app/utils/ApiClient.js

@@ -4,6 +4,14 @@ import { map, trim } from 'lodash';
 import invariant from 'invariant';
 import stores from 'stores';
 import download from './download';
+import {
+  AuthorizationError,
+  NetworkError,
+  NotFoundError,
+  OfflineError,
+  RequestError,
+  UpdateRequiredError,
+} from './errors';
 
 type Options = {
   baseUrl?: string,
@@ -62,9 +70,9 @@ class ApiClient {
       });
     } catch (err) {
       if (window.navigator.onLine) {
-        throw new Error('A network error occurred, try again?');
+        throw new NetworkError('A network error occurred, try again?');
       } else {
-        throw new Error('No internet connection available');
+        throw new OfflineError('No internet connection available');
       }
     }
 
@@ -104,9 +112,18 @@ class ApiClient {
 
     if (response.status === 400 && error.error === 'editor_update_required') {
       window.location.reload(true);
+      throw new UpdateRequiredError(error.message);
     }
 
-    throw new Error(error.message);
+    if (response.status === 403) {
+      throw new AuthorizationError(error.message);
+    }
+
+    if (response.status === 404) {
+      throw new NotFoundError(error.message);
+    }
+
+    throw new RequestError(error.message);
   };
 
   get = (path: string, data: ?Object, options?: Object) => {

app/utils/errors.js

@@ -0,0 +1,9 @@
+// @flow
+import ExtendableError from 'es6-error';
+
+export class AuthorizationError extends ExtendableError {}
+export class NetworkError extends ExtendableError {}
+export class NotFoundError extends ExtendableError {}
+export class OfflineError extends ExtendableError {}
+export class RequestError extends ExtendableError {}
+export class UpdateRequiredError extends ExtendableError {}