Playwright TypeScript | TypeScript vs JavaScript in Playwright
TOPICS
✅ Why TypeScript ＞ JavaScript for tests
✅ Catch errors before running code
✅ Use types for safer locators & actions
✅ Avoid missing await / promise bugs
Watch the full course here: • Playwright TypeScript Tutorial for Beginne...
🔹 Hands-on coding
🔹 Real test execution
🔹 Intentional error demos
🔹 Compile-time vs runtime comparison
In this step-by-step session, we build a working Playwright TypeScript test, convert it to JavaScript, and then compare both to understand the power of TypeScript in automation testing
00:00 Introduction and Topics
01:08 Step 1 - Create a login test in a file login.spec.ts Also create login.spec.js for comparison
17:32 Step 2 - Invalid Method on Page: page.gotourl('https://google.com');
18:42 Step 3 - Random Method Injection: page.randomemethod();
19:33 Step 4 - Typed Locator Immutability: const username: Locator = page.locator('#user-name');
21:17 Step 5 - Wrong Argument Type: page.locator(123);
22:22 Step 6 - Method Parameter Type Safety: username.fill('standard_user');
23:12 Step 7 - Method Availability Based on Type: await loginButton.click();
24:28 Step 8 - Page vs Locator Method Separation: page.goto('https://google.com');
25:04 Step 9 - Smart Assertions (Type-aware expect): await expect(page).toHaveURL('...');
26:45 Step 10 - TS + ESLint ＞ Promise Safety: await page.goto('https://google.com');
28:46 QUIZ - https://forms.gle/yHBRjeNAS8paNkJK8
Let me know your score in the comments
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