Wrong context set when using within

[jimmy-sc]

Description

After updating to CodeceptJS version 3.6.10 (also occurring in 3.7.0), we noticed that the within functionality no longer works correctly when used with a selector like .modal-dialog. Instead of setting the context to a page or frame object, it sets it to a locator object, which causes an error when trying to execute certain functions.

The error encountered:

context.waitForFunction is not a function

This error occurred in the waitForEnabled function, which expects context to be a page object, but instead it is passed as a locator because of the changes introduced with: #4557
Other helper functions that we found that produce the same error: waitForDisabled, waitNumberOfVisibleElements, waitForValue.
We also observed other functions like waitForText not working correctly inside within (e.g. not finding text inside the within context although it was obviously there).
Specifically this line in the _getContext function breaks this use case, since it now returns this.context even if it is a locator object:

  async _getContext() {
    if ((this.context && this.context.constructor.name === 'FrameLocator') || this.context) {
      return this.context
    }
...

Everything worked fine again after reverting the changes that were introduced by this commit.

Steps to Reproduce

1. Use the within function with a selector such as .modal-dialog.
2. Attempt to run a command inside the within block, like waitForEnabled.
3. Observe the error message.

Example test case:

Feature('Modal Test');

Scenario('Test modal within', async ({ I }) => {
  I.amOnPage('https://example.com'); 
  I.click('.open-modal');
  within('.modal-dialog', async () => {
   I.waitForEnabled('.button')
  });
});

Details

• CodeceptJS version: 3.6.10 and 3.7.0
• NodeJS Version: 23.7.0
• playwright-core version: 1.49.1