[Workers Analytics Engine] Type AnalyticsEngine is not wrapped correctly.

[VergeDX]

Demo:

from workers import WorkerEntrypoint, Response


class Default(WorkerEntrypoint):
    async def fetch(self, request):
        try:
            self.env.ANALYTICS.writeDataPoint(
                {
                    "blobs": ["blob1", "blob2"],
                    "doubles": [1.0, 2.5],
                    "indexes": ["idx"],
                }
            )

        except Exception as inst:
            return Response(str(inst))

        return Response("Hello world!")

After wrangler deploy, curl says:

TypeError: Incorrect type for the 'indexes' field on 'AnalyticsEngineEvent': the provided value is not of type 'Array'.

[VergeDX]

Actually, I noticed:

from workers import WorkerEntrypoint, Response


class Default(WorkerEntrypoint):
    async def fetch(self, request):
        return Response(str(type(self.env.ANALYTICS)))

will return:

<class 'pyodide.ffi.JsProxy'>

Which should be a _BindingWrapper:

https://github.com/cloudflare/workers-py/blob/main/packages/cli/tests/bindings-test/src/test_analytics_engine.py

[VergeDX]

FYI: https://github.com/cloudflare/workerd/blob/main/src/workerd/api/analytics-engine.h