add jsdoc

Author: annieyw

src/cdk/testing/text-filtering.ts

@@ -1,3 +1,8 @@
+/**
+ * Gets text of element excluding certain selectors within the element.
+ * @param element Element to get text from,
+ * @param excludeSelector Selector identifying which elements to exclude,
+ */
 export function getTextWithExcludedElements(element: Element, excludeSelector: string) {
   const clone = element.cloneNode(true) as Element;
   const exclusions = clone.querySelectorAll(excludeSelector);

tools/public_api_guard/cdk/testing.d.ts

@@ -131,9 +131,7 @@ export interface TestElement {
     sendKeys(...keys: (string | TestKey)[]): Promise<void>;
     sendKeys(modifiers: ModifierKeys, ...keys: (string | TestKey)[]): Promise<void>;
     setInputValue?(value: string): Promise<void>;
-    text(options?: {
-        exclude?: string;
-    }): Promise<string>;
+    text(options?: TextOptions): Promise<string>;
 }
 
 export declare enum TestKey {