fix attribute that can be null in playgrounds

Author: dprevost-LMI

playgrounds/jasmine/package-lock.json

@@ -52,7 +52,8 @@ describe('Basic Expect Matchers', () => {
             const navLinks = await $$('nav a')
             const hrefs: string[] = []
             for (const link of navLinks) {
-                hrefs.push(await link.getAttribute('href'))
+                const href = await link.getAttribute('href')
+                if(href) hrefs.push(href)
             }
 
             await expect(hrefs).toBeInstanceOf(Array)

playgrounds/jasmine/test/specs/basic-matchers.test.ts

@@ -38,7 +38,8 @@ describe('Jasmine-Specific Features', () => {
             const navLinks = await $$('nav a')
             const hrefs: string[] = []
             for (const link of navLinks) {
-                hrefs.push(await link.getAttribute('href'))
+                const href = await link.getAttribute('href')
+                if(href) hrefs.push(href)
             }
             await expect(hrefs).toEqual(jasmine.arrayContaining(['/docs/gettingstarted']))
         })

playgrounds/jasmine/test/specs/jasmine-specific.test.ts

@@ -50,7 +50,8 @@ describe('Basic Expect Matchers', () => {
             const navLinks = await $$('nav a')
             const hrefs: string[] = []
             for (const link of navLinks) {
-                hrefs.push(await link.getAttribute('href'))
+                const href = await link.getAttribute('href')
+                if(href) hrefs.push(href)
             }
 
             expect(hrefs).toBeInstanceOf(Array)