I've been searching for days

Is there a solution to have a flutter emulator that changes screen size just like resizing browser window to test the responsiveness of the ui design code using flutter, in vs code or intellijIDEA ?

I only found that possible using google chrome browser by running flutter\_web project while changing the channel to flutter channel beta

And it requires as well after setting up the framework and after adjusting system environment variables that you will need to change all imported package:flutter/material.dart to flutter\_web/material.dart and so you don't just copy the library files and folders and paste them there in the flutter\_web new project

Which means you will have two separate projects and so the process of testing each responsive screen design in google chrome dynamically will be a very lengthy process to keep coping and pasting the code from that project to this project to test it on chrome browser.

There must be an emulator that just has the feature of dynamically change emulator screen size & rati,, any ideas ?