🐛 Class decorators break in the browser when using the init function

[stephlow]

Environment information

`[email protected]`

What happened?

In the current implementation, when you use a class decorator and a custom init configuration, the decorator will run before the init function.

Because of this, it will try to spin up a PrometheusExporter, even though we configure a push gateway in the init function.

Expected result

The class decorator should use the configuration provided in the init call

[keturiosakys]

Good catch thank you! Notably this won't just break in the browser: because the decorator resolves before any other code is run (even the first init function) - any custom exporter configuration will be ignored.