diff --git a/app/assets/javascripts/directives/functional/autofocus.js b/app/assets/javascripts/directives/functional/autofocus.js
deleted file mode 100644
index 46fc64ec1..000000000
--- a/app/assets/javascripts/directives/functional/autofocus.js
+++ /dev/null
@@ -1,16 +0,0 @@
-/* @ngInject */
-export function autofocus($timeout) {
-  return {
-    restrict: 'A',
-    scope: {
-      shouldFocus: '='
-    },
-    link: function($scope, $element) {
-      $timeout(function() {
-        if ($scope.shouldFocus) {
-          $element[0].focus();
-        }
-      });
-    }
-  };
-}
diff --git a/app/assets/javascripts/directives/functional/autofocus.ts b/app/assets/javascripts/directives/functional/autofocus.ts
new file mode 100644
index 000000000..a2173fc0d
--- /dev/null
+++ b/app/assets/javascripts/directives/functional/autofocus.ts
@@ -0,0 +1,19 @@
+/* @ngInject */
+export function autofocus($timeout: ng.ITimeoutService) {
+  return {
+    restrict: 'A',
+    scope: {
+      shouldFocus: '='
+    },
+    link: function (
+      $scope: ng.IScope,
+      $element: JQLite
+    ) {
+      $timeout(() => {
+        if (($scope as any).shouldFocus) {
+          $element[0].focus();
+        }
+      });
+    }
+  };
+}
diff --git a/app/assets/javascripts/directives/functional/click-outside.js b/app/assets/javascripts/directives/functional/click-outside.ts
similarity index 89%
rename from app/assets/javascripts/directives/functional/click-outside.js
rename to app/assets/javascripts/directives/functional/click-outside.ts
index 15342c2bb..4f7d2e2c8 100644
--- a/app/assets/javascripts/directives/functional/click-outside.js
+++ b/app/assets/javascripts/directives/functional/click-outside.ts
@@ -1,9 +1,9 @@
 /* @ngInject */
-export function clickOutside($document) {
+export function clickOutside($document: ng.IDocumentService) {
   return {
     restrict: 'A',
     replace: false,
-    link: function ($scope, $element, attrs) {
+    link: function ($scope: ng.IScope, $element: JQLite, attrs: any) {
       // Causes memory leak as-is:
       // let didApplyClickOutside = false;
 
diff --git a/app/assets/javascripts/directives/functional/delay-hide.js b/app/assets/javascripts/directives/functional/delay-hide.js
deleted file mode 100644
index e03b54580..000000000
--- a/app/assets/javascripts/directives/functional/delay-hide.js
+++ /dev/null
@@ -1,44 +0,0 @@
-import angular from 'angular';
-
-/* @ngInject */
-export function delayHide($timeout) {
-  return {
-    restrict: 'A',
-    scope: {
-      show: '=',
-      delay: '@'
-    },
-    link: function(scope, elem, attrs) {
-      showElement(false);
-
-      // This is where all the magic happens!
-      // Whenever the scope variable updates we simply
-      // show if it evaluates to 'true' and hide if 'false'
-      scope.$watch('show', function(newVal) {
-        newVal ? showSpinner() : hideSpinner();
-      });
-
-      function showSpinner() {
-        if (scope.hidePromise) {
-          $timeout.cancel(scope.hidePromise);
-          scope.hidePromise = null;
-        }
-        showElement(true);
-      }
-
-      function hideSpinner() {
-        scope.hidePromise = $timeout(showElement.bind(this, false), getDelay());
-      }
-
-      function showElement(show) {
-        show ? elem.css({ display: '' }) : elem.css({ display: 'none' });
-      }
-
-      function getDelay() {
-        var delay = parseInt(scope.delay);
-
-        return angular.isNumber(delay) ? delay : 200;
-      }
-    }
-  };
-}
diff --git a/app/assets/javascripts/directives/functional/delay-hide.ts b/app/assets/javascripts/directives/functional/delay-hide.ts
new file mode 100644
index 000000000..8625c4c21
--- /dev/null
+++ b/app/assets/javascripts/directives/functional/delay-hide.ts
@@ -0,0 +1,45 @@
+import angular from 'angular';
+
+/* @ngInject */
+export function delayHide($timeout: ng.ITimeoutService) {
+  return {
+    restrict: 'A',
+    scope: {
+      show: '=',
+      delay: '@'
+    },
+    link: function (scope: ng.IScope, elem: JQLite) {
+      const scopeAny = scope as any;
+      const showSpinner = () => {
+        if (scopeAny.hidePromise) {
+          $timeout.cancel(scopeAny.hidePromise);
+          scopeAny.hidePromise = null;
+        }
+        showElement(true);
+      }
+
+      const hideSpinner = () => {
+        scopeAny.hidePromise = $timeout(
+          showElement.bind(this as any, false),
+          getDelay()
+        );
+      }
+
+      const showElement = (show: boolean) => {
+        show ? elem.css({ display: '' }) : elem.css({ display: 'none' });
+      }
+
+      const getDelay = () => {
+        const delay = parseInt(scopeAny.delay);
+        return angular.isNumber(delay) ? delay : 200;
+      }
+
+      showElement(false);
+      // Whenever the scope variable updates we simply
+      // show if it evaluates to 'true' and hide if 'false'
+      scope.$watch('show', function (newVal) {
+        newVal ? showSpinner() : hideSpinner();
+      });
+    }
+  };
+}
diff --git a/app/assets/javascripts/directives/functional/elemReady.js b/app/assets/javascripts/directives/functional/elemReady.ts
similarity index 64%
rename from app/assets/javascripts/directives/functional/elemReady.js
rename to app/assets/javascripts/directives/functional/elemReady.ts
index 1b7809406..2387f0083 100644
--- a/app/assets/javascripts/directives/functional/elemReady.js
+++ b/app/assets/javascripts/directives/functional/elemReady.ts
@@ -1,8 +1,8 @@
 /* @ngInject */
-export function elemReady($parse) {
+export function elemReady($parse: ng.IParseService) {
   return {
     restrict: 'A',
-    link: function($scope, elem, attrs) {
+    link: function($scope: ng.IScope, elem: JQLite, attrs: any) {
       elem.ready(function() {
         $scope.$apply(function() {
           var func = $parse(attrs.elemReady);
diff --git a/app/assets/javascripts/directives/functional/file-change.js b/app/assets/javascripts/directives/functional/file-change.js
deleted file mode 100644
index 1cd82d284..000000000
--- a/app/assets/javascripts/directives/functional/file-change.js
+++ /dev/null
@@ -1,16 +0,0 @@
-/* @ngInject */
-export function fileChange() {
-  return {
-    restrict: 'A',
-    scope: {
-      handler: '&'
-    },
-    link: function(scope, element) {
-      element.on('change', function(event) {
-        scope.$apply(function() {
-          scope.handler({ files: event.target.files });
-        });
-      });
-    }
-  };
-}
diff --git a/app/assets/javascripts/directives/functional/file-change.ts b/app/assets/javascripts/directives/functional/file-change.ts
new file mode 100644
index 000000000..3f29bee6e
--- /dev/null
+++ b/app/assets/javascripts/directives/functional/file-change.ts
@@ -0,0 +1,19 @@
+/* @ngInject */
+export function fileChange() {
+  return {
+    restrict: 'A',
+    scope: {
+      handler: '&'
+    },
+    link: function (scope: ng.IScope, element: JQLite) {
+      element.on('change', (event) => {
+        scope.$apply(() => {
+          const files = (event.target as HTMLInputElement).files;
+          (scope as any).handler({
+            files: files
+          });
+        });
+      });
+    }
+  };
+}
diff --git a/app/assets/javascripts/directives/functional/index.js b/app/assets/javascripts/directives/functional/index.ts
similarity index 100%
rename from app/assets/javascripts/directives/functional/index.js
rename to app/assets/javascripts/directives/functional/index.ts
diff --git a/app/assets/javascripts/directives/functional/infiniteScroll.js b/app/assets/javascripts/directives/functional/infiniteScroll.ts
similarity index 63%
rename from app/assets/javascripts/directives/functional/infiniteScroll.js
rename to app/assets/javascripts/directives/functional/infiniteScroll.ts
index d1057d842..e7aa91b50 100644
--- a/app/assets/javascripts/directives/functional/infiniteScroll.js
+++ b/app/assets/javascripts/directives/functional/infiniteScroll.ts
@@ -1,10 +1,11 @@
 /* @ngInject */
 export function infiniteScroll() {
   return {
-    link: function(scope, elem, attrs) {
+    link: function (scope: ng.IScope, elem: JQLite, attrs: any) {
+      const scopeAny = scope as any;
       const offset = parseInt(attrs.threshold) || 0;
       const e = elem[0];
-      scope.onScroll = () => {
+      scopeAny.onScroll = () => {
         if (
           scope.$eval(attrs.canLoad) &&
           e.scrollTop + e.offsetHeight >= e.scrollHeight - offset
@@ -12,9 +13,9 @@ export function infiniteScroll() {
           scope.$apply(attrs.infiniteScroll);
         }
       };
-      elem.on('scroll', scope.onScroll);
+      elem.on('scroll', scopeAny.onScroll);
       scope.$on('$destroy', () => {
-        elem.off('scroll', scope.onScroll);;
+        elem.off('scroll', scopeAny.onScroll);;
       });
     }
   };
diff --git a/app/assets/javascripts/directives/functional/lowercase.js b/app/assets/javascripts/directives/functional/lowercase.js
deleted file mode 100644
index e4f7f9781..000000000
--- a/app/assets/javascripts/directives/functional/lowercase.js
+++ /dev/null
@@ -1,19 +0,0 @@
-/* @ngInject */
-export function lowercase() {
-  return {
-    require: 'ngModel',
-    link: function(scope, element, attrs, modelCtrl) {
-      var lowercase = function(inputValue) {
-        if (inputValue === undefined) inputValue = '';
-        var lowercased = inputValue.toLowerCase();
-        if (lowercased !== inputValue) {
-          modelCtrl.$setViewValue(lowercased);
-          modelCtrl.$render();
-        }
-        return lowercased;
-      };
-      modelCtrl.$parsers.push(lowercase);
-      lowercase(scope[attrs.ngModel]);
-    }
-  };
-}
diff --git a/app/assets/javascripts/directives/functional/lowercase.ts b/app/assets/javascripts/directives/functional/lowercase.ts
new file mode 100644
index 000000000..95b0a27a1
--- /dev/null
+++ b/app/assets/javascripts/directives/functional/lowercase.ts
@@ -0,0 +1,24 @@
+/* @ngInject */
+export function lowercase() {
+  return {
+    require: 'ngModel',
+    link: function (
+      scope: ng.IScope,
+      _: JQLite,
+      attrs: any,
+      ctrl: ng.IController
+    ) {
+      const lowercase = (inputValue: string) => {
+        if (inputValue === undefined) inputValue = '';
+        const lowercased = inputValue.toLowerCase();
+        if (lowercased !== inputValue) {
+          ctrl.$setViewValue(lowercased);
+          ctrl.$render();
+        }
+        return lowercased;
+      };
+      ctrl.$parsers.push(lowercase);
+      lowercase((scope as any)[attrs.ngModel]);
+    }
+  };
+}
diff --git a/app/assets/javascripts/directives/functional/selectOnClick.js b/app/assets/javascripts/directives/functional/selectOnClick.js
deleted file mode 100644
index b657ba422..000000000
--- a/app/assets/javascripts/directives/functional/selectOnClick.js
+++ /dev/null
@@ -1,14 +0,0 @@
-/* @ngInject */
-export function selectOnClick($window) {
-  return {
-    restrict: 'A',
-    link: function(scope, element, attrs) {
-      element.on('focus', function() {
-        if (!$window.getSelection().toString()) {
-          /** Required for mobile Safari */
-          this.setSelectionRange(0, this.value.length);
-        }
-      });
-    }
-  };
-}
diff --git a/app/assets/javascripts/directives/functional/selectOnClick.ts b/app/assets/javascripts/directives/functional/selectOnClick.ts
new file mode 100644
index 000000000..25df0da1f
--- /dev/null
+++ b/app/assets/javascripts/directives/functional/selectOnClick.ts
@@ -0,0 +1,15 @@
+/* @ngInject */
+export function selectOnClick($window: ng.IWindowService) {
+  return {
+    restrict: 'A',
+    link: function(scope: ng.IScope, element: JQLite) {
+      element.on('focus', function() {
+        if (!$window.getSelection()!.toString()) {
+          const input = element as any;
+          /** Required for mobile Safari */
+          input.setSelectionRange(0, input.value.length);
+        }
+      });
+    }
+  };
+}
diff --git a/app/assets/javascripts/directives/functional/snEnter.js b/app/assets/javascripts/directives/functional/snEnter.ts
similarity index 53%
rename from app/assets/javascripts/directives/functional/snEnter.js
rename to app/assets/javascripts/directives/functional/snEnter.ts
index de91a89b1..5dd934756 100644
--- a/app/assets/javascripts/directives/functional/snEnter.js
+++ b/app/assets/javascripts/directives/functional/snEnter.ts
@@ -1,9 +1,13 @@
 /* @ngInject */
 export function snEnter() {
-  return function(scope, element, attrs) {
-    element.bind('keydown keypress', function(event) {
+  return function (
+    scope: ng.IScope,
+    element: JQLite,
+    attrs: any
+  ) {
+    element.bind('keydown keypress', function (event) {
       if (event.which === 13) {
-        scope.$apply(function() {
+        scope.$apply(function () {
           scope.$eval(attrs.snEnter, { event: event });
         });