fix: Include undefined in the return type of get (#2392)

src/api/attributes.spec.ts

@@ -996,7 +996,8 @@ describe('$(...)', () => {
     it('(fn) : should work with no initial class attribute', () => {
       const $inputs = cheerio.load(inputs);
       $inputs('input, select').toggleClass(function () {
-        return $inputs(this).get(0).tagName === 'select'
+        // eslint-disable-next-line @typescript-eslint/no-non-null-assertion -- `get` should never return undefined here.
+        return $inputs(this).get(0)!.tagName === 'select'
           ? 'selectable'
           : 'inputable';
       });

src/api/manipulation.spec.ts

@@ -738,16 +738,16 @@ describe('$(...)', () => {
       const $style = $('<style>.foo {}</style>');
       $fruits.prepend($style);
       const styleTag = $fruits.children().get(0);
-      expect(styleTag.tagName).toBe('style');
-      expect(styleTag.children[0]).toHaveProperty('data', '.foo {}');
+      expect(styleTag?.tagName).toBe('style');
+      expect(styleTag?.children[0]).toHaveProperty('data', '.foo {}');
     });
 
     it('($(...)) : should add script element as first child', () => {
       const $script = $('<script>var foo;</script>');
       $fruits.prepend($script);
       const scriptTag = $fruits.children().get(0);
-      expect(scriptTag.tagName).toBe('script');
-      expect(scriptTag.children[0]).toHaveProperty('data', 'var foo;');
+      expect(scriptTag?.tagName).toBe('script');
+      expect(scriptTag?.children[0]).toHaveProperty('data', 'var foo;');
     });
 
     it('(Node) : should add node as first child', () => {

src/api/traversing.ts

@@ -910,7 +910,7 @@ export function eq<T>(this: Cheerio<T>, i: number): Cheerio<T> {
  * @returns The element at the `i`th position.
  * @see {@link https://api.jquery.com/get/}
  */
-export function get<T>(this: Cheerio<T>, i: number): T;
+export function get<T>(this: Cheerio<T>, i: number): T | undefined;
 /**
  * Retrieve all elements matched by the Cheerio object, as an array.
  *