Replace x.top: experimentalSourceRewriting does not solve the issue on Cypress: "13.15.0"

[fderraz]

Current behavior

Hello,

My Cypress test fails because the home page is not loaded:

(uncaught exception)TypeError: top.getTabFrom is not a function 
(uncaught exception)TypeError: top.getParamWindow is not a function

 The following error originated from your application code, not from Cypress. > top.getTabFrom is not a function

I addedto the cypress.json file, the following params: “experimentalSourceRewriting”: true
Except that it doesn't fix my problem

Version Cypress: "13.15.0"

Any suggestions you may have to solve this problem, will be appreciated :)

Please find enclosed my code: Test.cy.js
The following code snippet corrects the loading problem, except that it's not a relevant solution because the win.top is used everywhere in the application under Test ==> it's not possible to include it after each click.

cy.window().then((win) => {
        win.top.getTabFrom = win.top[0].getTabFrom; 
        win.top.getParamWindow = win.top[0].getParamWindow; 
    });

Desired behavior

Display the content of the Home Page

Test code to reproduce

Cypress Version

13.15.0

Node version

v20.18.0

Operating System

Windows 10 Professionnel

Debug Logs

No response

Other

No response

[fderraz]

Hello Jennifer Shehane,

Could you please share with me the existing workaround that you have taged?

Thanks.

[ryanthemanuel]

I think there might be a couple of workarounds. You can ensure that workaround code gets loaded during the initial load of every window:

cy.on('window:before:load', (win) => {
    win.top.getTabFrom = win.top[0].getTabFrom; 
    win.top.getParamWindow = win.top[0].getParamWindow;
})

or if you know what script is calling those functions you could do something like:

cy.intercept('GET', '<reg-ex-to-qualify-on-script', (req) => {
  req.continue((res) => {
    res.body = res.body.replaceAll('top.getTabFrom', 'top[0].getTabFrom').replaceAll('top.getParamWindow', 'top[0].getParamWindow')
  })
})