Fix Cloudflare Worker: enable nodejs_compat_populate_process_env

The Cloudflare Workers runtime does not define `process` by default,
even with nodejs_compat enabled. Add the nodejs_compat_populate_process_env
compatibility flag so that process.env is populated from Worker bindings
(including .dev.vars in local development). This allows the identity key
env var to be read at module scope without restructuring the example.

Author: tillrohrmann

packages/examples/cloudflare/src/index.ts

@@ -24,9 +24,8 @@ const greeter = restate.service({
   },
 });
 
-// eslint-disable-next-line @typescript-eslint/no-unnecessary-condition
 const identityKeys =
-  process.env?.RESTATE_IDENTITY_KEYS?.split(",").filter(Boolean);
+  process.env.RESTATE_IDENTITY_KEYS?.split(",").filter(Boolean);
 
 export default {
   fetch: restate.createEndpointHandler({ services: [greeter], identityKeys }),

packages/examples/cloudflare/wrangler.toml

@@ -16,7 +16,7 @@ minify = false
 
 # Enable NodeJS compatibility (used by the SDK for the Node Buffer API)
 compatibility_date = "2024-05-13"
-compatibility_flags = [ "nodejs_compat" ]
+compatibility_flags = [ "nodejs_compat", "nodejs_compat_populate_process_env" ]
 
 [dev]
 ip = "0.0.0.0"