I am trying to run my reactjs app on Panasonic Vierra Smart Tv browser. I am able to load the webpage after importing core-js and babel-polyfill, but the UI is out of place. The styling is not working as expected. The same UI runs well on chrome on my laptop.
As it turns out, switching from bootstrap 4 to bootstrap 3 solved my problem. Also, some of the newer APIs like fetch are not supported by older browsers. I had to switch back to XMLHttpRequest to make network calls. Everything else, including React(with Typescript) and firebase realtime, works fine.
I found the following two websites useful:
1) https://www.whatismybrowser.com/ To check what browser or browser version you are currently using.
2) https://caniuse.com/ To check support for a particular javascript feature across different browsers.