Merge pull request #4535 from segmentio/jfoskin-patch-1-1

Older browser support

Author: stayseesong

src/connections/sources/catalog/libraries/website/javascript/supported-browsers.md

@@ -18,13 +18,14 @@ The library is regularly tested and is functional with the following browsers:
 > warning "Deprecation of Analytics.js Classic"
 > Analytics.js Classic was deprecated on February 28, 2023. As of March 2023, Segment upgraded all sources to [Analytics.js 2.0](/docs/connections/sources/catalog/libraries/website/javascript/). 
 
-
 ### Internet Explorer Support
 
 Segment guarantees support for Internet Explorer 11 and later for Analytics.js. Remember that different bundled (device-mode) destinations might have different compatibility guarantees for their own products. Refer to the vendor's documentation to confirm browser compatibility.
 
+If you need to support older versions of Internet Explorer or Opera, Segment recommends you to either load a polyfill script in the head as shown [here](https://cdnjs.cloudflare.com/ajax/libs/babel-polyfill/7.7.0/polyfill.min.js){:target="_blank"}, or use the analytics-next npm package and polyfill bundle as shown in [Babel](https://babeljs.io/docs/babel-preset-env){:target="_blank"}. 
+
 > info ""
-> Classic destinations and Analytics.js support Internet Explorer 11, but some Actions destinations are not yet supported. 
+> Classic destinations and Analytics.js support Internet Explorer 11, but some Actions destinations are not yet supported.
 
 ## Tracking Protection (ITP, ETP)