features/*.feature
step_definitions/*.steps.ts
support/
├── hooks.ts          # Browser lifecycle
├── world.ts          # Shared page context
cucumber.js

// support/world.ts
import { setWorldConstructor, World } from '@cucumber/cucumber'
import { BrowserContext, Page } from '@playwright/test'

export class PlaywrightWorld extends World {
  context!: BrowserContext
  page!: Page
}

setWorldConstructor(PlaywrightWorld)

// support/hooks.ts
import { Before, After, BeforeAll, AfterAll } from '@cucumber/cucumber'
import { chromium, Browser } from '@playwright/test'

let browser: Browser

BeforeAll(async () => { browser = await chromium.launch() })
AfterAll(async () => { await browser.close() })

Before(async function (this: PlaywrightWorld) {
  this.context = await browser.newContext()
  this.page = await this.context.newPage()
})

After(async function (this: PlaywrightWorld) {
  await this.context.close()
})

// GOOD: Role-based
await this.page.getByRole('button', { name: 'Login' }).click()
await this.page.getByTestId('email-input').fill(email)

// BAD: CSS selectors
await this.page.click('.btn-submit')

Given('I am on the login page', async function (this: PlaywrightWorld) {
  await this.page.goto('/login')
})

import { expect } from '@playwright/test'

await expect(this.page).toHaveURL('/dashboard')
await expect(this.page.getByText(message)).toBeVisible()

npx cucumber-js
npx cucumber-js --tags "@smoke"
npx cucumber-js features/login.feature