diff --git a/modules/@angular/common/test/forms/directives_spec.ts b/modules/@angular/common/test/forms/directives_spec.ts
index 4db365af66..53e904ded5 100644
--- a/modules/@angular/common/test/forms/directives_spec.ts
+++ b/modules/@angular/common/test/forms/directives_spec.ts
@@ -44,10 +44,10 @@ import {PromiseWrapper} from '../../src/facade/promise';
 import {SimpleChange} from '@angular/core/src/change_detection';
 
 class DummyControlValueAccessor implements ControlValueAccessor {
-  writtenValue;
+  writtenValue: any /** TODO #9100 */;
 
-  registerOnChange(fn) {}
-  registerOnTouched(fn) {}
+  registerOnChange(fn: any /** TODO #9100 */) {}
+  registerOnTouched(fn: any /** TODO #9100 */) {}
 
   writeValue(obj: any): void { this.writtenValue = obj; }
 }
@@ -56,8 +56,8 @@ class CustomValidatorDirective implements Validator {
   validate(c: Control): {[key: string]: any} { return {"custom": true}; }
 }
 
-function asyncValidator(expected, timeout = 0) {
-  return (c) => {
+function asyncValidator(expected: any /** TODO #9100 */, timeout = 0) {
+  return (c: any /** TODO #9100 */) => {
     var completer = PromiseWrapper.completer();
     var res = c.value != expected ? {"async": true} : null;
     if (timeout == 0) {
@@ -120,14 +120,14 @@ export function main() {
 
       describe("composeValidators", () => {
         it("should compose functions", () => {
-          var dummy1 = (_) => ({"dummy1": true});
-          var dummy2 = (_) => ({"dummy2": true});
+          var dummy1 = (_: any /** TODO #9100 */) => ({"dummy1": true});
+          var dummy2 = (_: any /** TODO #9100 */) => ({"dummy2": true});
           var v = composeValidators([dummy1, dummy2]);
           expect(v(new Control(""))).toEqual({"dummy1": true, "dummy2": true});
         });
 
         it("should compose validator directives", () => {
-          var dummy1 = (_) => ({"dummy1": true});
+          var dummy1 = (_: any /** TODO #9100 */) => ({"dummy1": true});
           var v = composeValidators([dummy1, new CustomValidatorDirective()]);
           expect(v(new Control(""))).toEqual({"dummy1": true, "custom": true});
         });
@@ -135,9 +135,9 @@ export function main() {
     });
 
     describe("NgFormModel", () => {
-      var form;
+      var form: any /** TODO #9100 */;
       var formModel: ControlGroup;
-      var loginControlDir;
+      var loginControlDir: any /** TODO #9100 */;
 
       beforeEach(() => {
         form = new NgFormModel([], []);
@@ -215,7 +215,7 @@ export function main() {
       });
 
       describe("addControlGroup", () => {
-        var matchingPasswordsValidator = (g) => {
+        var matchingPasswordsValidator = (g: any /** TODO #9100 */) => {
           if (g.controls["password"].value != g.controls["passwordConfirm"].value) {
             return {"differentPasswords": true};
           } else {
@@ -268,7 +268,7 @@ export function main() {
         });
 
         it("should set up a sync validator", () => {
-          var formValidator = (c) => ({"custom": true});
+          var formValidator = (c: any /** TODO #9100 */) => ({"custom": true});
           var f = new NgFormModel([formValidator], []);
           f.form = formModel;
           f.ngOnChanges({"form": new SimpleChange(null, null)});
@@ -289,10 +289,10 @@ export function main() {
     });
 
     describe("NgForm", () => {
-      var form;
+      var form: any /** TODO #9100 */;
       var formModel: ControlGroup;
-      var loginControlDir;
-      var personControlGroupDir;
+      var loginControlDir: any /** TODO #9100 */;
+      var personControlGroupDir: any /** TODO #9100 */;
 
       beforeEach(() => {
         form = new NgForm([], []);
@@ -348,7 +348,7 @@ export function main() {
       });
 
       it("should set up sync validator", fakeAsync(() => {
-           var formValidator = (c) => ({"custom": true});
+           var formValidator = (c: any /** TODO #9100 */) => ({"custom": true});
            var f = new NgForm([formValidator], []);
 
            tick();
@@ -366,8 +366,8 @@ export function main() {
     });
 
     describe("NgControlGroup", () => {
-      var formModel;
-      var controlGroupDir;
+      var formModel: any /** TODO #9100 */;
+      var controlGroupDir: any /** TODO #9100 */;
 
       beforeEach(() => {
         formModel = new ControlGroup({"login": new Control(null)});
@@ -391,9 +391,9 @@ export function main() {
     });
 
     describe("NgFormControl", () => {
-      var controlDir;
-      var control;
-      var checkProperties = function(control) {
+      var controlDir: any /** TODO #9100 */;
+      var control: any /** TODO #9100 */;
+      var checkProperties = function(control: any /** TODO #9100 */) {
         expect(controlDir.control).toBe(control);
         expect(controlDir.value).toBe(control.value);
         expect(controlDir.valid).toBe(control.valid);
@@ -433,7 +433,7 @@ export function main() {
     });
 
     describe("NgModel", () => {
-      var ngModel;
+      var ngModel: any /** TODO #9100 */;
 
       beforeEach(() => {
         ngModel =
@@ -468,8 +468,8 @@ export function main() {
     });
 
     describe("NgControlName", () => {
-      var formModel;
-      var controlNameDir;
+      var formModel: any /** TODO #9100 */;
+      var controlNameDir: any /** TODO #9100 */;
 
       beforeEach(() => {
         formModel = new Control("name");
diff --git a/modules/@angular/common/test/forms/form_builder_spec.ts b/modules/@angular/common/test/forms/form_builder_spec.ts
index 1d697597f1..2b2d932232 100644
--- a/modules/@angular/common/test/forms/form_builder_spec.ts
+++ b/modules/@angular/common/test/forms/form_builder_spec.ts
@@ -12,11 +12,11 @@ import {Control, FormBuilder} from '@angular/common';
 import {PromiseWrapper} from '../../src/facade/promise';
 
 export function main() {
-  function syncValidator(_) { return null; }
-  function asyncValidator(_) { return PromiseWrapper.resolve(null); }
+  function syncValidator(_: any /** TODO #9100 */): any /** TODO #9100 */ { return null; }
+  function asyncValidator(_: any /** TODO #9100 */) { return PromiseWrapper.resolve(null); }
 
   describe("Form Builder", () => {
-    var b;
+    var b: any /** TODO #9100 */;
 
     beforeEach(() => { b = new FormBuilder(); });
 
diff --git a/modules/@angular/common/test/forms/integration_spec.ts b/modules/@angular/common/test/forms/integration_spec.ts
index 90a18ca9fa..66200d83d2 100644
--- a/modules/@angular/common/test/forms/integration_spec.ts
+++ b/modules/@angular/common/test/forms/integration_spec.ts
@@ -41,7 +41,7 @@ export function main() {
   describe("integration tests", () => {
 
     it("should initialize DOM elements with the given form object",
-       inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
+       inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async: any /** TODO #9100 */) => {
          var t = `<div [ngFormModel]="form">
                 <input type="text" ngControl="login">
                </div>`;
@@ -60,7 +60,7 @@ export function main() {
        }));
 
     it("should throw if a form isn't passed into ngFormModel",
-       inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
+       inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async: any /** TODO #9100 */) => {
          var t = `<div [ngFormModel]="form">
                 <input type="text" ngControl="login">
                </div>`;
@@ -75,7 +75,7 @@ export function main() {
        }));
 
     it("should update the control group values on DOM change",
-       inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
+       inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async: any /** TODO #9100 */) => {
          var form = new ControlGroup({"login": new Control("oldValue")});
 
          var t = `<div [ngFormModel]="form">
@@ -98,7 +98,7 @@ export function main() {
        }));
 
     it("should ignore the change event for <input type=text>",
-       inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
+       inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async: any /** TODO #9100 */) => {
          var form = new ControlGroup({"login": new Control("oldValue")});
 
          var t = `<div [ngFormModel]="form">
@@ -194,7 +194,7 @@ export function main() {
       })));
 
     it("should work with single controls",
-       inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
+       inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async: any /** TODO #9100 */) => {
          var control = new Control("loginValue");
 
          var t = `<div><input type="text" [ngFormControl]="form"></div>`;
@@ -217,7 +217,7 @@ export function main() {
        }));
 
     it("should update DOM elements when rebinding the control group",
-       inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
+       inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async: any /** TODO #9100 */) => {
          var t = `<div [ngFormModel]="form">
                 <input type="text" ngControl="login">
                </div>`;
@@ -240,7 +240,7 @@ export function main() {
        }));
 
     it("should update DOM elements when updating the value of a control",
-       inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
+       inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async: any /** TODO #9100 */) => {
          var login = new Control("oldValue");
          var form = new ControlGroup({"login": login});
 
@@ -265,7 +265,7 @@ export function main() {
        }));
 
     it("should mark controls as touched after interacting with the DOM control",
-       inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
+       inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async: any /** TODO #9100 */) => {
          var login = new Control("oldValue");
          var form = new ControlGroup({"login": login});
 
@@ -292,7 +292,7 @@ export function main() {
 
     describe("different control types", () => {
       it("should support <input type=text>",
-         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
+         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async: any /** TODO #9100 */) => {
            var t = `<div [ngFormModel]="form">
                   <input type="text" ngControl="text">
                 </div>`;
@@ -316,7 +316,7 @@ export function main() {
          }));
 
       it("should support <input> without type",
-         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
+         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async: any /** TODO #9100 */) => {
            var t = `<div [ngFormModel]="form">
                   <input ngControl="text">
                 </div>`;
@@ -339,7 +339,7 @@ export function main() {
          }));
 
       it("should support <textarea>",
-         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
+         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async: any /** TODO #9100 */) => {
            var t = `<div [ngFormModel]="form">
                   <textarea ngControl="text"></textarea>
                 </div>`;
@@ -363,7 +363,7 @@ export function main() {
          }));
 
       it("should support <type=checkbox>",
-         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
+         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async: any /** TODO #9100 */) => {
            var t = `<div [ngFormModel]="form">
                   <input type="checkbox" ngControl="checkbox">
                 </div>`;
@@ -388,7 +388,7 @@ export function main() {
          }));
 
       it("should support <type=number>",
-         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
+         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async: any /** TODO #9100 */) => {
            var t = `<div [ngFormModel]="form">
                   <input type="number" ngControl="num">
                 </div>`;
@@ -412,7 +412,7 @@ export function main() {
          }));
 
       it("should support <type=number> when value is cleared in the UI",
-         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
+         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async: any /** TODO #9100 */) => {
            var t = `<div [ngFormModel]="form">
                   <input type="number" ngControl="num" required>
                 </div>`;
@@ -442,7 +442,7 @@ export function main() {
 
 
       it("should support <type=number> when value is cleared programmatically",
-         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
+         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async: any /** TODO #9100 */) => {
            var form = new ControlGroup({"num": new Control(10)});
            var t = `<div [ngFormModel]="form">
                   <input type="number" ngControl="num" [(ngModel)]="data">
@@ -463,7 +463,7 @@ export function main() {
          }));
 
       it("should support <type=radio>",
-         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
+         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async: any /** TODO #9100 */) => {
            var t = `<form [ngFormModel]="form">
                   <input type="radio" ngControl="foodChicken" name="food">
                   <input type="radio" ngControl="foodFish" name="food">
@@ -494,7 +494,7 @@ export function main() {
       describe("should support <select>", () => {
         it("with basic selection",
            inject([TestComponentBuilder, AsyncTestCompleter],
-                  (tcb: TestComponentBuilder, async) => {
+                  (tcb: TestComponentBuilder, async: any /** TODO #9100 */) => {
                     var t = `<select>
                       <option value="SF"></option>
                       <option value="NYC"></option>
@@ -516,7 +516,7 @@ export function main() {
 
         it("with basic selection and value bindings",
            inject([TestComponentBuilder, AsyncTestCompleter],
-                  (tcb: TestComponentBuilder, async) => {
+                  (tcb: TestComponentBuilder, async: any /** TODO #9100 */) => {
                     var t = `<select>
                       <option *ngFor="let city of list" [value]="city['id']">
                         {{ city['name'] }}
@@ -542,7 +542,7 @@ export function main() {
 
         it("with ngControl",
            inject([TestComponentBuilder, AsyncTestCompleter],
-                  (tcb: TestComponentBuilder, async) => {
+                  (tcb: TestComponentBuilder, async: any /** TODO #9100 */) => {
                     var t = `<div [ngFormModel]="form">
                     <select ngControl="city">
                       <option value="SF"></option>
@@ -582,7 +582,7 @@ export function main() {
                       </select>
                   </div>`;
 
-             var fixture;
+             var fixture: any /** TODO #9100 */;
              tcb.overrideTemplate(MyComp8, t)
                  .createAsync(MyComp8)
                  .then((compFixture) => fixture = compFixture);
@@ -601,7 +601,7 @@ export function main() {
 
         it("with option values that are objects",
            inject([TestComponentBuilder, AsyncTestCompleter],
-                  (tcb: TestComponentBuilder, async) => {
+                  (tcb: TestComponentBuilder, async: any /** TODO #9100 */) => {
                     var t = `<div>
                       <select [(ngModel)]="selectedCity">
                         <option *ngFor="let c of list" [ngValue]="c">{{c['name']}}</option>
@@ -635,7 +635,7 @@ export function main() {
 
         it("when new options are added (selection through the model)",
            inject([TestComponentBuilder, AsyncTestCompleter],
-                  (tcb: TestComponentBuilder, async) => {
+                  (tcb: TestComponentBuilder, async: any /** TODO #9100 */) => {
                     var t = `<div>
                       <select [(ngModel)]="selectedCity">
                         <option *ngFor="let c of list" [ngValue]="c">{{c['name']}}</option>
@@ -665,7 +665,7 @@ export function main() {
 
         it("when new options are added (selection through the UI)",
             inject([TestComponentBuilder, AsyncTestCompleter],
-                (tcb: TestComponentBuilder, async) => {
+                (tcb: TestComponentBuilder, async: any /** TODO #9100 */) => {
                   var t = `<div>
                       <select [(ngModel)]="selectedCity">
                         <option *ngFor="let c of list" [ngValue]="c">{{c['name']}}</option>
@@ -698,7 +698,7 @@ export function main() {
 
         it("when options are removed",
            inject([TestComponentBuilder, AsyncTestCompleter],
-                  (tcb: TestComponentBuilder, async) => {
+                  (tcb: TestComponentBuilder, async: any /** TODO #9100 */) => {
                     var t = `<div>
                       <select [(ngModel)]="selectedCity">
                         <option *ngFor="let c of list" [ngValue]="c">{{c}}</option>
@@ -726,7 +726,7 @@ export function main() {
 
         it("when option values change identity while tracking by index",
            inject([TestComponentBuilder, AsyncTestCompleter],
-                  (tcb: TestComponentBuilder, async) => {
+                  (tcb: TestComponentBuilder, async: any /** TODO #9100 */) => {
                     var t = `<div>
                       <select [(ngModel)]="selectedCity">
                         <option *ngFor="let c of list; trackBy:customTrackBy" [ngValue]="c">{{c}}</option>
@@ -758,7 +758,7 @@ export function main() {
 
         it("with duplicate option values",
            inject([TestComponentBuilder, AsyncTestCompleter],
-                  (tcb: TestComponentBuilder, async) => {
+                  (tcb: TestComponentBuilder, async: any /** TODO #9100 */) => {
                     var t = `<div>
                       <select [(ngModel)]="selectedCity">
                         <option *ngFor="let c of list" [ngValue]="c">{{c}}</option>
@@ -789,7 +789,7 @@ export function main() {
 
         it("when option values have same content, but different identities",
            inject([TestComponentBuilder, AsyncTestCompleter],
-                  (tcb: TestComponentBuilder, async) => {
+                  (tcb: TestComponentBuilder, async: any /** TODO #9100 */) => {
                     var t = `<div>
                       <select [(ngModel)]="selectedCity">
                         <option *ngFor="let c of list" [ngValue]="c">{{c['name']}}</option>
@@ -819,7 +819,7 @@ export function main() {
       });
 
       it("should support custom value accessors",
-         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
+         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async: any /** TODO #9100 */) => {
            var t = `<div [ngFormModel]="form">
                   <input type="text" ngControl="name" wrapped-value>
                 </div>`;
@@ -842,7 +842,7 @@ export function main() {
          }));
 
       it("should support custom value accessors on non builtin input elements that fire a change event without a 'target' property",
-         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
+         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async: any /** TODO #9100 */) => {
            var t = `<div [ngFormModel]="form">
                   <my-input ngControl="name"></my-input>
                 </div>`;
@@ -870,7 +870,7 @@ export function main() {
 
     describe("validations", () => {
       it("should use sync validators defined in html",
-         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
+         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async: any /** TODO #9100 */) => {
            var form = new ControlGroup(
                {"login": new Control(""), "min": new Control(""), "max": new Control("")});
 
@@ -924,7 +924,7 @@ export function main() {
                     <input type="text" ngControl="login" uniq-login-validator="expected">
                  </div>`;
 
-           var rootTC;
+           var rootTC: any /** TODO #9100 */;
            tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((root) => rootTC = root);
            tick();
 
@@ -946,7 +946,7 @@ export function main() {
          })));
 
       it("should use sync validators defined in the model",
-         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
+         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async: any /** TODO #9100 */) => {
            var form = new ControlGroup({"login": new Control("aa", Validators.required)});
 
            var t = `<div [ngFormModel]="form">
@@ -979,7 +979,7 @@ export function main() {
                   <input type="text" ngControl="login">
                  </div>`;
 
-           var fixture;
+           var fixture: any /** TODO #9100 */;
            tcb.overrideTemplate(MyComp8, t).createAsync(MyComp8).then((root) => fixture = root);
            tick();
 
@@ -1007,7 +1007,7 @@ export function main() {
 
     describe("nested forms", () => {
       it("should init DOM with the given form object",
-         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
+         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async: any /** TODO #9100 */) => {
            var form =
                new ControlGroup({"nested": new ControlGroup({"login": new Control("value")})});
 
@@ -1030,7 +1030,7 @@ export function main() {
          }));
 
       it("should update the control group values on DOM change",
-         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
+         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async: any /** TODO #9100 */) => {
            var form =
                new ControlGroup({"nested": new ControlGroup({"login": new Control("value")})});
 
@@ -1141,7 +1141,7 @@ export function main() {
          })));
 
       it("should not create a template-driven form when ngNoForm is used",
-         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
+         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async: any /** TODO #9100 */) => {
            var t = `<form ngNoForm>
                </form>`;
 
@@ -1322,7 +1322,7 @@ export function main() {
 
     describe("setting status classes", () => {
       it("should work with single fields",
-         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
+         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async: any /** TODO #9100 */) => {
            var form = new Control("", Validators.required);
 
            var t = `<div><input type="text" [ngFormControl]="form"></div>`;
@@ -1353,7 +1353,7 @@ export function main() {
          }));
 
       it("should work with complex model-driven forms",
-         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
+         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async: any /** TODO #9100 */) => {
            var form = new ControlGroup({"name": new Control("", Validators.required)});
 
            var t = `<form [ngFormModel]="form"><input type="text" ngControl="name"></form>`;
@@ -1384,7 +1384,7 @@ export function main() {
          }));
 
       it("should work with ngModel",
-         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
+         inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async: any /** TODO #9100 */) => {
            var t = `<div><input [(ngModel)]="name" required></div>`;
 
            tcb.overrideTemplate(MyComp8, t)
@@ -1486,17 +1486,17 @@ export function main() {
   host: {'(input)': 'handleOnInput($event.target.value)', '[value]': 'value'}
 })
 class WrappedValue implements ControlValueAccessor {
-  value;
+  value: any /** TODO #9100 */;
   onChange: Function;
 
   constructor(cd: NgControl) { cd.valueAccessor = this; }
 
-  writeValue(value) { this.value = `!${value}!`; }
+  writeValue(value: any /** TODO #9100 */) { this.value = `!${value}!`; }
 
-  registerOnChange(fn) { this.onChange = fn; }
-  registerOnTouched(fn) {}
+  registerOnChange(fn: any /** TODO #9100 */) { this.onChange = fn; }
+  registerOnTouched(fn: any /** TODO #9100 */) {}
 
-  handleOnInput(value) { this.onChange(value.substring(1, value.length - 1)); }
+  handleOnInput(value: any /** TODO #9100 */) { this.onChange(value.substring(1, value.length - 1)); }
 }
 
 @Component({selector: "my-input", template: ''})
@@ -1506,11 +1506,11 @@ class MyInput implements ControlValueAccessor {
 
   constructor(cd: NgControl) { cd.valueAccessor = this; }
 
-  writeValue(value) { this.value = `!${value}!`; }
+  writeValue(value: any /** TODO #9100 */) { this.value = `!${value}!`; }
 
-  registerOnChange(fn) { ObservableWrapper.subscribe(this.onInput, fn); }
+  registerOnChange(fn: any /** TODO #9100 */) { ObservableWrapper.subscribe(this.onInput, fn); }
 
-  registerOnTouched(fn) {}
+  registerOnTouched(fn: any /** TODO #9100 */) {}
 
   dispatchChangeEvent() {
     ObservableWrapper.callEmit(this.onInput, this.value.substring(1, this.value.length - 1));
@@ -1518,7 +1518,7 @@ class MyInput implements ControlValueAccessor {
 }
 
 function uniqLoginAsyncValidator(expectedValue: string) {
-  return (c) => {
+  return (c: any /** TODO #9100 */) => {
     var completer = PromiseWrapper.completer();
     var res = (c.value == expectedValue) ? null : {"uniqLogin": true};
     completer.resolve(res);
@@ -1550,9 +1550,9 @@ class LoginIsEmptyValidator {
   ]
 })
 class UniqLoginValidator implements Validator {
-  @Input('uniq-login-validator') expected;
+  @Input('uniq-login-validator') expected: any /** TODO #9100 */;
 
-  validate(c) { return uniqLoginAsyncValidator(this.expected)(c); }
+  validate(c: any /** TODO #9100 */) { return uniqLoginAsyncValidator(this.expected)(c); }
 }
 
 @Component({
@@ -1577,7 +1577,7 @@ class MyComp8 {
   customTrackBy(index: number, obj: any): number { return index; };
 }
 
-function sortedClassList(el) {
+function sortedClassList(el: any /** TODO #9100 */) {
   var l = getDOM().classList(el);
   ListWrapper.sort(l);
   return l;
diff --git a/modules/@angular/common/test/forms/model_spec.ts b/modules/@angular/common/test/forms/model_spec.ts
index 4d20589b89..1133e1c178 100644
--- a/modules/@angular/common/test/forms/model_spec.ts
+++ b/modules/@angular/common/test/forms/model_spec.ts
@@ -17,10 +17,10 @@ import {PromiseWrapper} from '../../src/facade/promise';
 import {TimerWrapper, ObservableWrapper, EventEmitter} from '../../src/facade/async';
 
 export function main() {
-  function asyncValidator(expected, timeouts = /*@ts2dart_const*/ {}) {
-    return (c) => {
+  function asyncValidator(expected: any /** TODO #9100 */, timeouts = /*@ts2dart_const*/ {}) {
+    return (c: any /** TODO #9100 */) => {
       var completer = PromiseWrapper.completer();
-      var t = isPresent(timeouts[c.value]) ? timeouts[c.value] : 0;
+      var t = isPresent((timeouts as any /** TODO #9100 */)[c.value]) ? (timeouts as any /** TODO #9100 */)[c.value] : 0;
       var res = c.value != expected ? {"async": true} : null;
 
       if (t == 0) {
@@ -33,7 +33,7 @@ export function main() {
     };
   }
 
-  function asyncValidatorReturningObservable(c) {
+  function asyncValidatorReturningObservable(c: any /** TODO #9100 */) {
     var e = new EventEmitter();
     PromiseWrapper.scheduleMicrotask(() => ObservableWrapper.callEmit(e, {"async": true}));
     return e;
@@ -140,7 +140,7 @@ export function main() {
       });
 
       describe("updateValue", () => {
-        var g, c;
+        var g: any /** TODO #9100 */, c: any /** TODO #9100 */;
         beforeEach(() => {
           c = new Control("oldValue");
           g = new ControlGroup({"one": c});
@@ -152,8 +152,8 @@ export function main() {
         });
 
         it("should invoke ngOnChanges if it is present", () => {
-          var ngOnChanges;
-          c.registerOnChange((v) => ngOnChanges = ["invoked", v]);
+          var ngOnChanges: any /** TODO #9100 */;
+          c.registerOnChange((v: any /** TODO #9100 */) => ngOnChanges = ["invoked", v]);
 
           c.updateValue("newValue");
 
@@ -161,8 +161,8 @@ export function main() {
         });
 
         it("should not invoke on change when explicitly specified", () => {
-          var onChange = null;
-          c.registerOnChange((v) => onChange = ["invoked", v]);
+          var onChange: any /** TODO #9100 */ = null;
+          c.registerOnChange((v: any /** TODO #9100 */) => onChange = ["invoked", v]);
 
           c.updateValue("newValue", {emitModelToViewChange: false});
 
@@ -197,12 +197,12 @@ export function main() {
       });
 
       describe("valueChanges & statusChanges", () => {
-        var c;
+        var c: any /** TODO #9100 */;
 
         beforeEach(() => { c = new Control("old", Validators.required); });
 
         it("should fire an event after the value has been updated",
-           inject([AsyncTestCompleter], (async) => {
+           inject([AsyncTestCompleter], (async: any /** TODO #9100 */) => {
              ObservableWrapper.subscribe(c.valueChanges, (value) => {
                expect(c.value).toEqual('new');
                expect(value).toEqual('new');
@@ -224,7 +224,7 @@ export function main() {
         it("should fire an event after the status has been updated to pending", fakeAsync(() => {
              var c = new Control("old", Validators.required, asyncValidator("expected"));
 
-             var log = [];
+             var log: any[] /** TODO #9100 */ = [];
              ObservableWrapper.subscribe(c.valueChanges, (value) => log.push(`value: '${value}'`));
              ObservableWrapper.subscribe(c.statusChanges,
                                          (status) => log.push(`status: '${status}'`));
@@ -253,8 +253,8 @@ export function main() {
         // TODO: remove the if statement after making observable delivery sync
         if (!IS_DART) {
           it("should update set errors and status before emitting an event",
-             inject([AsyncTestCompleter], (async) => {
-               c.valueChanges.subscribe(value => {
+             inject([AsyncTestCompleter], (async: any /** TODO #9100 */) => {
+               c.valueChanges.subscribe((value: any /** TODO #9100 */) => {
                  expect(c.valid).toEqual(false);
                  expect(c.errors).toEqual({"required": true});
                  async.done();
@@ -263,7 +263,7 @@ export function main() {
              }));
         }
 
-        it("should return a cold observable", inject([AsyncTestCompleter], (async) => {
+        it("should return a cold observable", inject([AsyncTestCompleter], (async: any /** TODO #9100 */) => {
              c.updateValue("will be ignored");
              ObservableWrapper.subscribe(c.valueChanges, (value) => {
                expect(value).toEqual('new');
@@ -380,7 +380,7 @@ export function main() {
 
       describe("errors", () => {
         it("should run the validator when the value changes", () => {
-          var simpleValidator = (c) =>
+          var simpleValidator = (c: any /** TODO #9100 */) =>
               c.controls["one"].value != "correct" ? {"broken": true} : null;
 
           var c = new Control(null);
@@ -399,7 +399,7 @@ export function main() {
       });
 
       describe("dirty", () => {
-        var c, g;
+        var c: any /** TODO #9100 */, g: any /** TODO #9100 */;
 
         beforeEach(() => {
           c = new Control('value');
@@ -417,7 +417,7 @@ export function main() {
 
       describe("optional components", () => {
         describe("contains", () => {
-          var group;
+          var group: any /** TODO #9100 */;
 
           beforeEach(() => {
             group = new ControlGroup(
@@ -473,7 +473,7 @@ export function main() {
       });
 
       describe("valueChanges", () => {
-        var g, c1, c2;
+        var g: any /** TODO #9100 */, c1: any /** TODO #9100 */, c2: any /** TODO #9100 */;
 
         beforeEach(() => {
           c1 = new Control("old1");
@@ -482,7 +482,7 @@ export function main() {
         });
 
         it("should fire an event after the value has been updated",
-           inject([AsyncTestCompleter], (async) => {
+           inject([AsyncTestCompleter], (async: any /** TODO #9100 */) => {
              ObservableWrapper.subscribe(g.valueChanges, (value) => {
                expect(g.value).toEqual({'one': 'new1', 'two': 'old2'});
                expect(value).toEqual({'one': 'new1', 'two': 'old2'});
@@ -492,7 +492,7 @@ export function main() {
            }));
 
         it("should fire an event after the control's observable fired an event",
-           inject([AsyncTestCompleter], (async) => {
+           inject([AsyncTestCompleter], (async: any /** TODO #9100 */) => {
              var controlCallbackIsCalled = false;
 
              ObservableWrapper.subscribe(c1.valueChanges,
@@ -507,7 +507,7 @@ export function main() {
            }));
 
         it("should fire an event when a control is excluded",
-           inject([AsyncTestCompleter], (async) => {
+           inject([AsyncTestCompleter], (async: any /** TODO #9100 */) => {
              ObservableWrapper.subscribe(g.valueChanges, (value) => {
                expect(value).toEqual({'one': 'old1'});
                async.done();
@@ -517,7 +517,7 @@ export function main() {
            }));
 
         it("should fire an event when a control is included",
-           inject([AsyncTestCompleter], (async) => {
+           inject([AsyncTestCompleter], (async: any /** TODO #9100 */) => {
              g.exclude("two");
 
              ObservableWrapper.subscribe(g.valueChanges, (value) => {
@@ -529,8 +529,8 @@ export function main() {
            }));
 
         it("should fire an event every time a control is updated",
-           inject([AsyncTestCompleter], (async) => {
-             var loggedValues = [];
+           inject([AsyncTestCompleter], (async: any /** TODO #9100 */) => {
+             var loggedValues: any[] /** TODO #9100 */ = [];
 
              ObservableWrapper.subscribe(g.valueChanges, (value) => {
                loggedValues.push(value);
@@ -547,7 +547,7 @@ export function main() {
            }));
 
         xit("should not fire an event when an excluded control is updated",
-            inject([AsyncTestCompleter], (async) => {
+            inject([AsyncTestCompleter], (async: any /** TODO #9100 */) => {
                                              // hard to test without hacking zones
                                          }));
       });
@@ -609,7 +609,7 @@ export function main() {
     describe("ControlArray", () => {
       describe("adding/removing", () => {
         var a: ControlArray;
-        var c1, c2, c3;
+        var c1: any /** TODO #9100 */, c2: any /** TODO #9100 */, c3: any /** TODO #9100 */;
 
         beforeEach(() => {
           a = new ControlArray([]);
@@ -658,7 +658,7 @@ export function main() {
 
       describe("errors", () => {
         it("should run the validator when the value changes", () => {
-          var simpleValidator = (c) => c.controls[0].value != "correct" ? {"broken": true} : null;
+          var simpleValidator = (c: any /** TODO #9100 */) => c.controls[0].value != "correct" ? {"broken": true} : null;
 
           var c = new Control(null);
           var g = new ControlArray([c], simpleValidator);
@@ -725,7 +725,7 @@ export function main() {
 
       describe("valueChanges", () => {
         var a: ControlArray;
-        var c1, c2;
+        var c1: any /** TODO #9100 */, c2: any /** TODO #9100 */;
 
         beforeEach(() => {
           c1 = new Control("old1");
@@ -734,7 +734,7 @@ export function main() {
         });
 
         it("should fire an event after the value has been updated",
-           inject([AsyncTestCompleter], (async) => {
+           inject([AsyncTestCompleter], (async: any /** TODO #9100 */) => {
              ObservableWrapper.subscribe(a.valueChanges, (value) => {
                expect(a.value).toEqual(['new1', 'old2']);
                expect(value).toEqual(['new1', 'old2']);
@@ -744,7 +744,7 @@ export function main() {
            }));
 
         it("should fire an event after the control's observable fired an event",
-           inject([AsyncTestCompleter], (async) => {
+           inject([AsyncTestCompleter], (async: any /** TODO #9100 */) => {
              var controlCallbackIsCalled = false;
 
              ObservableWrapper.subscribe(c1.valueChanges,
@@ -759,7 +759,7 @@ export function main() {
            }));
 
         it("should fire an event when a control is removed",
-           inject([AsyncTestCompleter], (async) => {
+           inject([AsyncTestCompleter], (async: any /** TODO #9100 */) => {
              ObservableWrapper.subscribe(a.valueChanges, (value) => {
                expect(value).toEqual(['old1']);
                async.done();
@@ -768,7 +768,7 @@ export function main() {
              a.removeAt(1);
            }));
 
-        it("should fire an event when a control is added", inject([AsyncTestCompleter], (async) => {
+        it("should fire an event when a control is added", inject([AsyncTestCompleter], (async: any /** TODO #9100 */) => {
              a.removeAt(1);
 
              ObservableWrapper.subscribe(a.valueChanges, (value) => {
diff --git a/modules/@angular/common/test/forms/validators_spec.ts b/modules/@angular/common/test/forms/validators_spec.ts
index 0aa5c89b82..33ba2c0cfd 100644
--- a/modules/@angular/common/test/forms/validators_spec.ts
+++ b/modules/@angular/common/test/forms/validators_spec.ts
@@ -17,7 +17,7 @@ export function main() {
   function validator(key: string, error: any) {
     return function(c: AbstractControl) {
       var r = {};
-      r[key] = error;
+      (r as any /** TODO #9100 */)[key] = error;
       return r;
     }
   }
@@ -111,8 +111,8 @@ export function main() {
     });
 
     describe("composeAsync", () => {
-      function asyncValidator(expected, response) {
-        return (c) => {
+      function asyncValidator(expected: any /** TODO #9100 */, response: any /** TODO #9100 */) {
+        return (c: any /** TODO #9100 */) => {
           var emitter = new EventEmitter();
           var res = c.value != expected ? response : null;
 
@@ -136,7 +136,7 @@ export function main() {
              asyncValidator("expected", {"two": true})
            ]);
 
-           var value = null;
+           var value: any /** TODO #9100 */ = null;
            (<Promise<any>>c(new Control("invalid"))).then(v => value = v);
 
            tick(1);
@@ -147,7 +147,7 @@ export function main() {
       it("should return null when no errors", fakeAsync(() => {
            var c = Validators.composeAsync([asyncValidator("expected", {"one": true})]);
 
-           var value = null;
+           var value: any /** TODO #9100 */ = null;
            (<Promise<any>>c(new Control("expected"))).then(v => value = v);
 
            tick(1);
@@ -158,7 +158,7 @@ export function main() {
       it("should ignore nulls", fakeAsync(() => {
            var c = Validators.composeAsync([asyncValidator("expected", {"one": true}), null]);
 
-           var value = null;
+           var value: any /** TODO #9100 */ = null;
            (<Promise<any>>c(new Control("invalid"))).then(v => value = v);
 
            tick(1);