Update to use async check in examples

Author: ankur22

docs/sources/v0.52.x/using-k6-browser/recommended-practices/simulate-user-input-delay.md

@@ -34,12 +34,12 @@ The browser module predominantly provides asynchronous APIs, so it's best to avo
 
 In the browser modules there are various asynchronous APIs that can be used to wait for certain states:
 
-| Method                                           | Description                                                                   |
-| ------------------------------------------------ | ----------------------------------------------------------------------------- |
-| [page.waitForFunction](#pagewaitforfunction)     | Waits for the given function to return a truthy value.                        |
-| [page.waitForLoadState](#pagewaitforloadstate)   | Waits for the specified page life cycle event.                                |
-| [page.waitForNavigation](#pagewaitfornavigation) | Waits for the navigation to complete after one starts.                        |
-| [locator.waitFor](#locatorwaitfor)               | Wait for the element to be in a particular state.                             |
+| Method                                           | Description                                                                 |
+| ------------------------------------------------ | --------------------------------------------------------------------------- |
+| [page.waitForFunction](#pagewaitforfunction)     | Waits for the given function to return a truthy value.                      |
+| [page.waitForLoadState](#pagewaitforloadstate)   | Waits for the specified page life cycle event.                              |
+| [page.waitForNavigation](#pagewaitfornavigation) | Waits for the navigation to complete after one starts.                      |
+| [locator.waitFor](#locatorwaitfor)               | Wait for the element to be in a particular state.                           |
 | [page.waitForTimeout](#pagewaitfortimeout)       | Waits the given time. _Use this instead of `sleep` in your frontend tests_. |
 
 ## page.waitForFunction
@@ -52,7 +52,7 @@ In the browser modules there are various asynchronous APIs that can be used to w
 
 ```javascript
 import { browser } from 'k6/browser';
-import { check } from 'k6';
+import { check } from 'https://jslib.k6.io/k6-utils/1.5.0/index.js';
 
 export const options = {
   scenarios: {
@@ -87,8 +87,9 @@ export default async function () {
       timeout: 2000,
     });
 
-    const innerHTML = await ok.innerHTML();
-    check(ok, { 'waitForFunction successfully resolved': innerHTML == 'Hello' });
+    await check(ok, {
+      'waitForFunction successfully resolved': async (ok) => (await ok.innerHTML()) == 'Hello',
+    });
   } finally {
     await page.close();
   }
@@ -104,7 +105,6 @@ export default async function () {
 {{< code >}}
 
 ```javascript
-import { check } from 'k6';
 import { browser } from 'k6/browser';
 
 export const options = {
@@ -148,7 +148,6 @@ It's important to call this in a [Promise.all](https://developer.mozilla.org/en-
 {{< code >}}
 
 ```javascript
-import { check } from 'k6';
 import { browser } from 'k6/browser';
 
 export const options = {

docs/sources/v0.53.x/using-k6-browser/recommended-practices/simulate-user-input-delay.md

@@ -52,7 +52,7 @@ In the browser modules there are various asynchronous APIs that can be used to w
 
 ```javascript
 import { browser } from 'k6/browser';
-import { check } from 'k6';
+import { check } from 'https://jslib.k6.io/k6-utils/1.5.0/index.js';
 
 export const options = {
   scenarios: {
@@ -87,8 +87,9 @@ export default async function () {
       timeout: 2000,
     });
 
-    const innerHTML = await ok.innerHTML();
-    check(ok, { 'waitForFunction successfully resolved': innerHTML == 'Hello' });
+    await check(ok, {
+      'waitForFunction successfully resolved': async (ok) => (await ok.innerHTML()) == 'Hello',
+    });
   } finally {
     await page.close();
   }
@@ -104,7 +105,6 @@ export default async function () {
 {{< code >}}
 
 ```javascript
-import { check } from 'k6';
 import { browser } from 'k6/browser';
 
 export const options = {
@@ -148,7 +148,6 @@ It's important to call this in a [Promise.all](https://developer.mozilla.org/en-
 {{< code >}}
 
 ```javascript
-import { check } from 'k6';
 import { browser } from 'k6/browser';
 
 export const options = {