Unleash NextJS not working on old browser like Chrome v50

[chenxeed]

Describe the bug

Hi! 👋

Firstly, thanks for your work on this project! 🙂

I have an issue on trying to use unleash on my client side.

I'm supporting old browser up to Chrome v50, and I got an error that the page cannot load due to the usage of async await in the updateContext:

Steps to reproduce the bug

1. Use @unleash/nextjs which also rely on @unleash/proxy-client-react
2. Build the app in nextJS
3. Open the app in old browser like Chrome v50

Expected behavior

No unsupported syntax on old browser that triggers error.

Logs, error output, etc.

Uncaught SyntaxError: Unexpected identifier

Screenshots

Additional context

No response

Unleash version

v4.3.0

Subscription type

Open source

Hosting type

Self-hosted

SDK information (language and version)

frontend SDK

[gastonfournier]

Hi @chenxeed thanks for the issue and the contribution! We'll look into it!