Hotwired uses a lot of relatively modern web standards. Some are packaged in @stimulus/polyfills but a lot are left out. In order to use stimulus/turbo with browsers as old as IE11 you will need more then that. This package tries to help by bundling some of the polyfills. For a full IE 11 support you will need the following list :
- dom4
- core-js/stable
- @stimulus/polyfills
- turbo-polyfills
- whatwg-fetch
- yet-another-abortcontroller-polyfill
yarn add -D turbo-polyfills