diff --git a/public/app/core/services/backend_srv.ts b/public/app/core/services/backend_srv.ts
index 0d7d098dcea..31db2a4bdee 100644
--- a/public/app/core/services/backend_srv.ts
+++ b/public/app/core/services/backend_srv.ts
@@ -1,46 +1,55 @@
+// @ts-ignore
 import _ from 'lodash';
+import angular from 'angular';
 import coreModule from 'app/core/core_module';
 import appEvents from 'app/core/app_events';
 import config from 'app/core/config';
 import { DashboardModel } from 'app/features/dashboard/state/DashboardModel';
 import { DashboardSearchHit } from 'app/types/search';
+import { ContextSrv } from './context_srv';
+import { FolderInfo, DashboardDTO } from 'app/types';
 
 export class BackendSrv {
-  private inFlightRequests = {};
+  private inFlightRequests: { [key: string]: Array<angular.IDeferred<any>> } = {};
   private HTTP_REQUEST_CANCELED = -1;
   private noBackendCache: boolean;
 
   /** @ngInject */
-  constructor(private $http, private $q, private $timeout, private contextSrv) {}
+  constructor(
+    private $http: any,
+    private $q: angular.IQService,
+    private $timeout: angular.ITimeoutService,
+    private contextSrv: ContextSrv
+  ) {}
 
-  get(url, params?) {
-    return this.request({ method: 'GET', url: url, params: params });
+  get(url: string, params?: any) {
+    return this.request({ method: 'GET', url, params });
   }
 
-  delete(url) {
-    return this.request({ method: 'DELETE', url: url });
+  delete(url: string) {
+    return this.request({ method: 'DELETE', url });
   }
 
-  post(url, data) {
-    return this.request({ method: 'POST', url: url, data: data });
+  post(url: string, data: any) {
+    return this.request({ method: 'POST', url, data });
   }
 
-  patch(url, data) {
-    return this.request({ method: 'PATCH', url: url, data: data });
+  patch(url: string, data: any) {
+    return this.request({ method: 'PATCH', url, data });
   }
 
-  put(url, data) {
-    return this.request({ method: 'PUT', url: url, data: data });
+  put(url: string, data: any) {
+    return this.request({ method: 'PUT', url, data });
   }
 
-  withNoBackendCache(callback) {
+  withNoBackendCache(callback: any) {
     this.noBackendCache = true;
     return callback().finally(() => {
       this.noBackendCache = false;
     });
   }
 
-  requestErrorHandler(err) {
+  requestErrorHandler(err: any) {
     if (err.isHandled) {
       return;
     }
@@ -75,7 +84,7 @@ export class BackendSrv {
     throw data;
   }
 
-  request(options) {
+  request(options: any) {
     options.retry = options.retry || 0;
     const requestIsLocal = !options.url.match(/^http/);
     const firstAttempt = options.retry === 0;
@@ -92,7 +101,7 @@ export class BackendSrv {
     }
 
     return this.$http(options).then(
-      results => {
+      (results: any) => {
         if (options.method !== 'GET') {
           if (results && results.data.message) {
             if (options.showSuccessAlert !== false) {
@@ -102,7 +111,7 @@ export class BackendSrv {
         }
         return results.data;
       },
-      err => {
+      (err: any) => {
         // handle unauthorized
         if (err.status === 401 && this.contextSrv.user.isSignedIn && firstAttempt) {
           return this.loginPing()
@@ -110,7 +119,7 @@ export class BackendSrv {
               options.retry = 1;
               return this.request(options);
             })
-            .catch(err => {
+            .catch((err: any) => {
               if (err.status === 401) {
                 window.location.href = config.appSubUrl + '/logout';
                 throw err;
@@ -124,7 +133,7 @@ export class BackendSrv {
     );
   }
 
-  addCanceler(requestId, canceler) {
+  addCanceler(requestId: string, canceler: angular.IDeferred<any>) {
     if (requestId in this.inFlightRequests) {
       this.inFlightRequests[requestId].push(canceler);
     } else {
@@ -132,15 +141,15 @@ export class BackendSrv {
     }
   }
 
-  resolveCancelerIfExists(requestId) {
+  resolveCancelerIfExists(requestId: string) {
     const cancelers = this.inFlightRequests[requestId];
     if (!_.isUndefined(cancelers) && cancelers.length) {
       cancelers[0].resolve();
     }
   }
 
-  datasourceRequest(options) {
-    let canceler = null;
+  datasourceRequest(options: any) {
+    let canceler: angular.IDeferred<any> = null;
     options.retry = options.retry || 0;
 
     // A requestID is provided by the datasource as a unique identifier for a
@@ -180,13 +189,13 @@ export class BackendSrv {
     }
 
     return this.$http(options)
-      .then(response => {
+      .then((response: any) => {
         if (!options.silent) {
           appEvents.emit('ds-request-response', response);
         }
         return response;
       })
-      .catch(err => {
+      .catch((err: any) => {
         if (err.status === this.HTTP_REQUEST_CANCELED) {
           throw { err, cancelled: true };
         }
@@ -201,7 +210,7 @@ export class BackendSrv {
               }
               return this.datasourceRequest(options);
             })
-            .catch(err => {
+            .catch((err: any) => {
               if (err.status === 401) {
                 window.location.href = config.appSubUrl + '/logout';
                 throw err;
@@ -238,11 +247,11 @@ export class BackendSrv {
     return this.request({ url: '/api/login/ping', method: 'GET', retry: 1 });
   }
 
-  search(query): Promise<DashboardSearchHit[]> {
+  search(query: any): Promise<DashboardSearchHit[]> {
     return this.get('/api/search', query);
   }
 
-  getDashboardBySlug(slug) {
+  getDashboardBySlug(slug: string) {
     return this.get(`/api/dashboards/db/${slug}`);
   }
 
@@ -254,7 +263,7 @@ export class BackendSrv {
     return this.get(`/api/folders/${uid}`);
   }
 
-  saveDashboard(dash, options) {
+  saveDashboard(dash: DashboardModel, options: any) {
     options = options || {};
 
     return this.post('/api/dashboards/db/', {
@@ -269,11 +278,11 @@ export class BackendSrv {
     return this.post('/api/folders', payload);
   }
 
-  deleteFolder(uid: string, showSuccessAlert) {
+  deleteFolder(uid: string, showSuccessAlert: boolean) {
     return this.request({ method: 'DELETE', url: `/api/folders/${uid}`, showSuccessAlert: showSuccessAlert === true });
   }
 
-  deleteDashboard(uid, showSuccessAlert) {
+  deleteDashboard(uid: string, showSuccessAlert: boolean) {
     return this.request({
       method: 'DELETE',
       url: `/api/dashboards/uid/${uid}`,
@@ -281,7 +290,7 @@ export class BackendSrv {
     });
   }
 
-  deleteFoldersAndDashboards(folderUids, dashboardUids) {
+  deleteFoldersAndDashboards(folderUids: string[], dashboardUids: string[]) {
     const tasks = [];
 
     for (const folderUid of folderUids) {
@@ -295,14 +304,14 @@ export class BackendSrv {
     return this.executeInOrder(tasks, []);
   }
 
-  moveDashboards(dashboardUids, toFolder) {
+  moveDashboards(dashboardUids: string[], toFolder: FolderInfo) {
     const tasks = [];
 
     for (const uid of dashboardUids) {
       tasks.push(this.createTask(this.moveDashboard.bind(this), true, uid, toFolder));
     }
 
-    return this.executeInOrder(tasks, []).then(result => {
+    return this.executeInOrder(tasks, []).then((result: any) => {
       return {
         totalCount: result.length,
         successCount: _.filter(result, { succeeded: true }).length,
@@ -311,10 +320,10 @@ export class BackendSrv {
     });
   }
 
-  private moveDashboard(uid, toFolder) {
+  private moveDashboard(uid: string, toFolder: FolderInfo) {
     const deferred = this.$q.defer();
 
-    this.getDashboardByUid(uid).then(fullDash => {
+    this.getDashboardByUid(uid).then((fullDash: DashboardDTO) => {
       const model = new DashboardModel(fullDash.dashboard, fullDash.meta);
 
       if ((!fullDash.meta.folderId && toFolder.id === 0) || fullDash.meta.folderId === toFolder.id) {
@@ -332,7 +341,7 @@ export class BackendSrv {
         .then(() => {
           deferred.resolve({ succeeded: true });
         })
-        .catch(err => {
+        .catch((err: any) => {
           if (err.data && err.data.status === 'plugin-dashboard') {
             err.isHandled = true;
             options.overwrite = true;
@@ -341,7 +350,7 @@ export class BackendSrv {
               .then(() => {
                 deferred.resolve({ succeeded: true });
               })
-              .catch(err => {
+              .catch((err: any) => {
                 deferred.resolve({ succeeded: false });
               });
           } else {
@@ -353,14 +362,14 @@ export class BackendSrv {
     return deferred.promise;
   }
 
-  private createTask(fn, ignoreRejections, ...args: any[]) {
-    return result => {
+  private createTask(fn: Function, ignoreRejections: boolean, ...args: any[]) {
+    return (result: any) => {
       return fn
         .apply(null, args)
-        .then(res => {
+        .then((res: any) => {
           return Array.prototype.concat(result, [res]);
         })
-        .catch(err => {
+        .catch((err: any) => {
           if (ignoreRejections) {
             return result;
           }
@@ -370,7 +379,7 @@ export class BackendSrv {
     };
   }
 
-  private executeInOrder(tasks, initialValue) {
+  private executeInOrder(tasks: any[], initialValue: any[]) {
     return tasks.reduce(this.$q.when, initialValue);
   }
 }
diff --git a/public/app/core/specs/backend_srv.test.ts b/public/app/core/specs/backend_srv.test.ts
index a6cb5a7d331..f7af6c89e32 100644
--- a/public/app/core/specs/backend_srv.test.ts
+++ b/public/app/core/specs/backend_srv.test.ts
@@ -1,4 +1,6 @@
+import angular from 'angular';
 import { BackendSrv } from 'app/core/services/backend_srv';
+import { ContextSrv } from '../services/context_srv';
 jest.mock('app/core/store');
 
 describe('backend_srv', () => {
@@ -9,7 +11,12 @@ describe('backend_srv', () => {
     return Promise.resolve({});
   };
 
-  const _backendSrv = new BackendSrv(_httpBackend, {}, {}, {});
+  const _backendSrv = new BackendSrv(
+    _httpBackend,
+    {} as angular.IQService,
+    {} as angular.ITimeoutService,
+    {} as ContextSrv
+  );
 
   describe('when handling errors', () => {
     it('should return the http status code', async () => {