@amplitude/plugin-session-replay-browser does not support older Safari versions (<17)

[markmssd]

Expected Behavior

It should load on older Safari browsers too (<16)

Current Behavior

It crashes with error

SyntaxError: Invalid regular expression: invalid group specifier name

Here's a related SO post: https://stackoverflow.com/questions/51568821/works-in-chrome-but-breaks-in-safari-invalid-regular-expression-invalid-group

Possible Solution

Compile rrweb and rrweb-snapshot properly in @amplitude/plugin-session-replay-browser should fix the issue.

Steps to Reproduce

Using @amplitude/analytics-browser, @amplitude/plugin-web-attribution-browser, or @amplitude/experiment-js-client causes no issues. When we use @amplitude/plugin-session-replay-browser, it causes the problem.

I boiled it down to the amplitude/rrweb dependency, which does not support older browser versions. You can see at https://browsersl.ist/#q=%22browserslist%22%3A+%5B%0A++%22defaults%22%2C%0A++%22not+op_mini+all%22%0A%5D that Safari <17 are not supported.

Environment

• JS SDK Version: 2.9.3
• Installation Method: Yarn
• Browser and Version: Safari 16

[lewgordon-amplitude]

Hey @markmssd thanks for reporting this. We think we may have a fix for this and will be looking into this soon!

[markmssd]

Awesome thanks! Let me know if I can provide more details to help :)

[kwalker3690]

This has been fixed in the latest version!

[markmssd]

Thanks @kwalker3690 and @lewgordon-amplitude ! It's indeed working properly now. There is still the issue happening, around ~20x a day instead of thousands, but I personally can't reproduce anymore. I'm suspecting Ad Blockers blocking some scripts and causing this maybe?