E2E typing glimpses (Playwright/Cypress)
See how TypeScript types flow in E2E tests with Playwright and Cypress; add proper type support and safe selectors.
E2E typing glimpses (Playwright/Cypress) is a free TypeScript Academy lesson on CoddyKit. This is lesson 3 of 3. You can read the complete lesson below for free — then practise it hands-on in the browser with a built-in code editor and a 24/7 AI tutor. It is part of the TypeScript Academy learning path, and your progress syncs across the web and the CoddyKit app. The TypeScript Academy course includes 3 lessons in total.
Intro
Goal: Glimpse how TypeScript enhances E2E tests. We'll set up typing for Playwright and Cypress, and write tiny typed tests.
Playwright install
Playwright ships its own test runner + types. Import from @playwright/test to get typed test, expect, and page.
npm install --save-dev @playwright/testPlaywright test
In Playwright, the page and locator types are strong; misuses are caught in compilation.
// example.spec.ts
import { test, expect } from "@playwright/test";
test("home loads", async ({ page }) => {
await page.goto("/")
const title = page.getByRole("heading", { name: /welcome/i })
await expect(title).toBeVisible()
// page is fully typed: URL, locators, assertions
})Cypress types
For Cypress global types, add types: ["cypress"] to tsconfig or write a reference to the support file.
// tsconfig.json (excerpt)
{
"compilerOptions": {
"types": ["cypress"]
}
}
// or in cypress/support/e2e.d.ts
/// <reference types="cypress" />Cypress test
cy command chains, assertion chains, and plugin commands are typed with TS; IDE recommendations become clear.
// cypress/e2e/home.cy.ts
describe("home", () => {
it("loads", () => {
cy.visit("/")
cy.findByRole("heading", { name: /welcome/i }).should("be.visible")
})
})Selectors helper
Data-testid based helper functions are more stable than fragile CSS/XPath selectors and provide easy autocompletion with TS.
// helpers/selectors.ts
export const h = {
title: (name: string) => `[data-testid="title-${name}"]`,
}
// usage (Playwright)
// await expect(page.locator(h.title("home"))).toBeVisible()
// usage (Cypress)
// cy.get(h.title("home")).should("be.visible")Cypress types check
Quick check: How do you enable Cypress global types (cy, Cypress) in TS?
Recap
Recap: Playwright and Cypress provide strong types with TS. Correct setup + safe selectors make E2E tests more reliable.
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Frequently Asked Questions
Is the “E2E typing glimpses (Playwright/Cypress)” lesson free?
Yes — the full text of “E2E typing glimpses (Playwright/Cypress)” is free to read here on the web. To practise it interactively (a built-in code editor and a 24/7 AI tutor) and unlock the rest of the TypeScript Academy course, upgrade to CoddyKit PRO. The TypeScript Academy course includes 3 lessons in total.
What will I learn in “E2E typing glimpses (Playwright/Cypress)”?
See how TypeScript types flow in E2E tests with Playwright and Cypress; add proper type support and safe selectors. You practise TypeScript Academy with hands-on code you run directly in the browser, and a 24/7 AI tutor answers your questions as you work through the lesson.
Do I need any experience to start TypeScript Academy?
No prior experience is required. TypeScript Academy on CoddyKit is structured for beginners through advanced learners, so you can start here or from the beginning and move at your own pace. This is lesson 3 of 3.
How long does the “E2E typing glimpses (Playwright/Cypress)” lesson take?
Most CoddyKit lessons take about 5–10 minutes. Each one is bite-sized and interactive, so you make steady progress and pick up exactly where you left off across the web and the app.
Can I write and run code in this TypeScript Academy lesson?
Yes. Every TypeScript Academy lesson includes a built-in code editor, so you write and run real code right in your browser and get instant AI feedback — no local setup required.
All lessons in this course
- Vitest/Jest setup for TS
- Typing tests & mocks; expectTypeOf
- E2E typing glimpses (Playwright/Cypress)