minimal reproduction of issue https://github.com/vitalets/playwright-bdd/issues/163

steps/fixtures.ts

@@ -1,5 +1,6 @@
 import { test as base } from 'playwright-bdd';
+import { MyFixture} from "./my-fixture";
 
-export const test = base.extend({
-  // add your fixtures here
-});
+export const test = base.extend<{ myFixture: MyFixture}>({
+  myFixture: async ({ page }, use) => await use(new MyFixture(page)),
+});

steps/index.ts

@@ -4,8 +4,9 @@ import { test } from './fixtures';
 
 const { Given, When, Then } = createBdd(test);
 
-Given('I am on Playwright home page', async ({ page }) => {
+Given('I am on Playwright home page', async ({ page, myFixture }) => {
   await page.goto('https://playwright.dev');
+  await myFixture.page.goto('https://playwright.dev');
 });
 
 When('I click link {string}', async ({ page }, name: string) => {

steps/my-fixture.ts

@@ -0,0 +1,8 @@
+import { Page } from "@playwright/test";
+
+export class MyFixture {
+    public page: Page;
+    constructor(page: Page) {
+        this.page = page;
+    }
+}

tsconfig.json

@@ -2,7 +2,7 @@
   "compilerOptions": {
     "target": "es2021",
     "module": "commonjs",
-    "strict": true,
+    "strict": false,
     "noEmit": true,
     "useUnknownInCatchVariables": false,
     "forceConsistentCasingInFileNames": true,