diff --git a/types/angular/angular-tests.ts b/types/angular/angular-tests.ts
index 9c0671601f..b4b626b9fa 100644
--- a/types/angular/angular-tests.ts
+++ b/types/angular/angular-tests.ts
@@ -707,7 +707,7 @@ class SampleDirective implements ng.IDirective {
     restrict = 'A';
     name = 'doh';
 
-    compile(templateElement: ng.IAugmentedJQuery) {
+    compile(templateElement: JQLite) {
         return {
             post: this.link
         };
@@ -723,7 +723,7 @@ class SampleDirective implements ng.IDirective {
 class SampleDirective2 implements ng.IDirective {
     restrict = 'EAC';
 
-    compile(templateElement: ng.IAugmentedJQuery) {
+    compile(templateElement: JQLite) {
         return {
             pre: this.link
         };
@@ -741,7 +741,7 @@ angular.module('SameplDirective', []).directive('sampleDirective', SampleDirecti
 angular.module('AnotherSampleDirective', []).directive('myDirective', ['$interpolate', '$q', ($interpolate: ng.IInterpolateService, $q: ng.IQService) => {
     return {
         restrict: 'A',
-        link: (scope: ng.IScope, el: ng.IAugmentedJQuery, attr: ng.IAttributes) => {
+        link: (scope: ng.IScope, el: JQLite, attr: ng.IAttributes) => {
             $interpolate(attr['test'])(scope);
             $interpolate('', true)(scope);
             $interpolate('', true, 'html')(scope);
@@ -869,7 +869,7 @@ angular.module('docsTimeDirective', [])
     }])
     .directive('myCurrentTime', ['$interval', 'dateFilter', ($interval: any, dateFilter: any) => {
         return {
-            link(scope: ng.IScope, element: ng.IAugmentedJQuery, attrs: ng.IAttributes) {
+            link(scope: ng.IScope, element: JQLite, attrs: ng.IAttributes) {
                 let format: any;
                 let timeoutId: any;
 
@@ -916,7 +916,7 @@ angular.module('docsTransclusionExample', [])
             transclude: true,
             scope: {},
             templateUrl: 'my-dialog.html',
-            link(scope: ng.IScope, element: ng.IAugmentedJQuery) {
+            link(scope: ng.IScope, element: JQLite) {
                 scope['name'] = 'Jeff';
             }
         };
@@ -1017,7 +1017,7 @@ angular.module('docsTabsExample', [])
             scope: {
                 title: '@'
             },
-            link(scope: ng.IScope, element: ng.IAugmentedJQuery, attrs: ng.IAttributes, tabsCtrl: any) {
+            link(scope: ng.IScope, element: JQLite, attrs: ng.IAttributes, tabsCtrl: any) {
                 tabsCtrl.addPane(scope);
             },
             templateUrl: 'my-pane.html'
@@ -1098,6 +1098,18 @@ angular.module('copyExample', [])
         $scope.reset();
     }]);
 
+// Extending IScope for a directive, see https://github.com/DefinitelyTyped/DefinitelyTyped/issues/21160
+interface IMyScope extends angular.IScope {
+    myScopeProperty: boolean;
+}
+
+angular.module('aaa').directive('directive', () => ({
+    link(scope: IMyScope) {
+        console.log(scope.myScopeProperty);
+        return;
+    }
+}));
+
 namespace locationTests {
     const $location: ng.ILocationService = null;
 
diff --git a/types/angular/index.d.ts b/types/angular/index.d.ts
index 45b9bea058..e16baf0a80 100644
--- a/types/angular/index.d.ts
+++ b/types/angular/index.d.ts
@@ -9,9 +9,6 @@
 
 /// <reference path="jqlite.d.ts" />
 
-// NOTE: @types/angular technically doesn't require TypeScript 2.3, only TypeScript 2.1.
-// It has a TypeScript 2.3 header so that merging tests with @types/jquery v3 will work.
-
 declare var angular: angular.IAngularStatic;
 
 // Support for painless dependency injection
@@ -232,8 +229,8 @@ declare namespace angular {
          * @param name Name of the directive in camel-case (i.e. ngBind which will match as ng-bind)
          * @param directiveFactory An injectable directive factory function.
          */
-        directive(name: string, directiveFactory: Injectable<IDirectiveFactory>): IModule;
-        directive(object: {[directiveName: string]: Injectable<IDirectiveFactory>}): IModule;
+        directive<TScope extends IScope>(name: string, directiveFactory: Injectable<IDirectiveFactory<TScope>>): IModule;
+        directive<TScope extends IScope>(object: {[directiveName: string]: Injectable<IDirectiveFactory<TScope>>}): IModule;
         /**
          * Register a service factory, which will be called to return the service instance. This is short for registering a service where its provider consists of only a $get property, which is the given service factory function. You should use $provide.factory(getFn) if you do not need to configure your service in a provider.
          *
@@ -1252,8 +1249,8 @@ declare namespace angular {
     }
 
     interface ICompileProvider extends IServiceProvider {
-        directive(name: string, directiveFactory: Injectable<IDirectiveFactory>): ICompileProvider;
-        directive(object: {[directiveName: string]: Injectable<IDirectiveFactory>}): ICompileProvider;
+        directive<TScope extends IScope>(name: string, directiveFactory: Injectable<IDirectiveFactory<TScope>>): ICompileProvider;
+        directive<TScope extends IScope>(object: {[directiveName: string]: Injectable<IDirectiveFactory<TScope>>}): ICompileProvider;
 
         component(name: string, options: IComponentOptions): ICompileProvider;
 
@@ -1961,13 +1958,13 @@ declare namespace angular {
     // and http://docs.angularjs.org/guide/directive
     ///////////////////////////////////////////////////////////////////////////
 
-    interface IDirectiveFactory {
-        (...args: any[]): IDirective | IDirectiveLinkFn;
+    interface IDirectiveFactory<TScope extends IScope = IScope> {
+        (...args: any[]): IDirective<TScope> | IDirectiveLinkFn<TScope>;
     }
 
-    interface IDirectiveLinkFn {
+    interface IDirectiveLinkFn<TScope extends IScope = IScope> {
         (
-            scope: IScope,
+            scope: TScope,
             instanceElement: JQLite,
             instanceAttributes: IAttributes,
             controller?: IController | IController[] | {[key: string]: IController},
@@ -1975,12 +1972,12 @@ declare namespace angular {
         ): void;
     }
 
-    interface IDirectivePrePost {
-        pre?: IDirectiveLinkFn;
-        post?: IDirectiveLinkFn;
+    interface IDirectivePrePost<TScope extends IScope> {
+        pre?: IDirectiveLinkFn<TScope>;
+        post?: IDirectiveLinkFn<TScope>;
     }
 
-    interface IDirectiveCompileFn {
+    interface IDirectiveCompileFn<TScope extends IScope> {
         (
             templateElement: JQLite,
             templateAttributes: IAttributes,
@@ -1991,11 +1988,11 @@ declare namespace angular {
              * that is passed to the link function instead.
              */
             transclude: ITranscludeFunction
-        ): void | IDirectiveLinkFn | IDirectivePrePost;
+        ): void | IDirectiveLinkFn<TScope> | IDirectivePrePost<TScope>;
     }
 
-    interface IDirective {
-        compile?: IDirectiveCompileFn;
+    interface IDirective<TScope extends IScope = IScope> {
+        compile?: IDirectiveCompileFn<TScope>;
         controller?: string | Injectable<IControllerConstructor>;
         controllerAs?: string;
         /**
@@ -2004,7 +2001,7 @@ declare namespace angular {
          * relies upon bindings inside a $onInit method on the controller, instead.
          */
         bindToController?: boolean | {[boundProperty: string]: string};
-        link?: IDirectiveLinkFn | IDirectivePrePost;
+        link?: IDirectiveLinkFn<TScope> | IDirectivePrePost<TScope>;
         multiElement?: boolean;
         priority?: number;
         /**
@@ -2077,9 +2074,7 @@ declare namespace angular {
             get<T>(name: '$xhrFactory'): IXhrFactory<T>;
             has(name: string): boolean;
             instantiate<T>(typeConstructor: {new(...args: any[]): T}, locals?: any): T;
-            invoke(inlineAnnotatedFunction: any[], context?: any, locals?: any): any;
-            invoke<T>(func: (...args: any[]) => T, context?: any, locals?: any): T;
-            invoke(func: Function, context?: any, locals?: any): any;
+            invoke<T = any>(func: Injectable<Function | ((...args: any[]) => T)>, context?: any, locals?: any): T;
             strictDi: boolean;
         }
 
diff --git a/types/angular/tsconfig.json b/types/angular/tsconfig.json
index 92d1e026c3..5ce810f938 100644
--- a/types/angular/tsconfig.json
+++ b/types/angular/tsconfig.json
@@ -16,7 +16,7 @@
         "noImplicitAny": false,
         "noImplicitThis": false,
         "strictNullChecks": false,
-        "strictFunctionTypes": false,
+        "strictFunctionTypes": true,
         "baseUrl": "../",
         "typeRoots": [
             "../"
@@ -25,4 +25,4 @@
         "noEmit": true,
         "forceConsistentCasingInFileNames": true
     }
-}
\ No newline at end of file
+}
diff --git a/types/ngprogress-lite/ngprogress-lite-tests.ts b/types/ngprogress-lite/ngprogress-lite-tests.ts
index c4b903d78b..2cdfa53661 100644
--- a/types/ngprogress-lite/ngprogress-lite-tests.ts
+++ b/types/ngprogress-lite/ngprogress-lite-tests.ts
@@ -4,7 +4,7 @@ app.config(
     ['ngProgressLiteProvider',
         (ngProgressLiteProvider: ng.progressLite.INgProgressLiteProvider) => {
             ngProgressLiteProvider.settings.ease = 'ease';
-            ngProgressLiteProvider.settings.minimum = 0.08,
+            ngProgressLiteProvider.settings.minimum = 0.08;
             ngProgressLiteProvider.settings.speed = 300;
             ngProgressLiteProvider.settings.trickleRate = 0.02;
             ngProgressLiteProvider.settings.trickleSpeed = 500;