build: update jasmine for improved type safety (#8350)

* Bumps the version of Jasmine to allow for better type safety in the assertions.
* Fixes a few new compilation errors.

src/cdk/table/table.spec.ts

@@ -66,7 +66,7 @@ describe('CdkTable', () => {
     it('with a rendered header with the right number of header cells', () => {
       const header = getHeaderRow(tableElement);
 
-      expect(header).not.toBe(undefined);
+      expect(header).toBeTruthy();
       expect(header.classList).toContain('customHeaderRowClass');
       expect(getHeaderCells(tableElement).length).toBe(component.columnsToRender.length);
     });
@@ -488,7 +488,7 @@ describe('CdkTable', () => {
     ]);
 
     // Remove the data source and check to make sure the table is empty again.
-    component.dataSource = null;
+    component.dataSource = undefined;
     dynamicDataSourceFixture.detectChanges();
 
     // Expect that the old data source has been disconnected.
@@ -696,7 +696,7 @@ class BooleanDataSource extends DataSource<boolean> {
   `
 })
 class SimpleCdkTableApp {
-  dataSource: FakeDataSource | null = new FakeDataSource();
+  dataSource: FakeDataSource | undefined = new FakeDataSource();
   columnsToRender = ['column_a', 'column_b', 'column_c'];
 
   @ViewChild(CdkTable) table: CdkTable<TestData>;

src/lib/input/input.spec.ts

@@ -223,7 +223,7 @@ describe('MatInput without forms', function () {
         fixture.debugElement.query(By.css('label')).nativeElement;
 
     expect(inputElement.id).toBeTruthy();
-    expect(inputElement.id).toEqual(labelElement.getAttribute('for'));
+    expect(inputElement.id).toEqual(labelElement.getAttribute('for')!);
   });
 
   it('should add aria-owns to the label for the associated control', () => {

src/lib/input/input.ts

@@ -75,6 +75,7 @@ export class MatInput implements MatFormFieldControl<any>, OnChanges, OnDestroy,
   protected _uid = `mat-input-${nextUniqueId++}`;
   protected _previousNativeValue: any;
   private _readonly = false;
+  private _inputValueAccessor: {value: any};
 
   /** Whether the input is focused. */
   focused = false;
@@ -161,11 +162,10 @@ export class MatInput implements MatFormFieldControl<any>, OnChanges, OnDestroy,
               @Optional() protected _parentForm: NgForm,
               @Optional() protected _parentFormGroup: FormGroupDirective,
               private _defaultErrorStateMatcher: ErrorStateMatcher,
-              @Optional() @Self() @Inject(MAT_INPUT_VALUE_ACCESSOR)
-                  private _inputValueAccessor: {value: any}) {
+              @Optional() @Self() @Inject(MAT_INPUT_VALUE_ACCESSOR) inputValueAccessor: any) {
     // If no input value accessor was explicitly specified, use the element as the input value
     // accessor.
-    this._inputValueAccessor = this._inputValueAccessor || this._elementRef.nativeElement;
+    this._inputValueAccessor = inputValueAccessor || this._elementRef.nativeElement;
 
     this._previousNativeValue = this.value;
 

src/lib/menu/menu.spec.ts

@@ -203,7 +203,7 @@ describe('MatMenu', () => {
     triggerEl.click();
     fixture.detectChanges();
 
-    const panel = overlayContainerElement.querySelector('.mat-menu-panel');
+    const panel = overlayContainerElement.querySelector('.mat-menu-panel')!;
 
     expect(panel).toBeTruthy('Expected the panel to be rendered.');
     expect(document.activeElement).toBe(panel, 'Expected the panel to be focused.');

src/lib/select/select.spec.ts

@@ -1032,7 +1032,7 @@ describe('MatSelect', () => {
       fixture.detectChanges();
 
       expect(fixture.componentInstance.customAccessor.select.ngControl)
-          .toBe(null, 'Expected mat-select NOT to inherit control from parent value accessor.');
+          .toBeFalsy('Expected mat-select NOT to inherit control from parent value accessor.');
       expect(fixture.componentInstance.customAccessor.writeValue).toHaveBeenCalled();
     }));
   });