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packages/api/src/util/create-authenticated-handler.ts

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+import serverless from 'serverless-http';
+import { APIGatewayProxyEventBase } from 'aws-lambda';
+import { Authorizer, RequestContext } from './request-context.type';
+import { Application } from 'express';
+
+const createAuthenticatedHandler = (app: Application) => {
+  const handler = serverless(app, {
+    request(
+      request: RequestContext,
+      event: APIGatewayProxyEventBase<Authorizer>,
+    ) {
+      request.context = event.requestContext;
+      request.currentUserSub = `${request.context?.authorizer?.claims?.sub}`;
+    },
+  });
+  return handler;
+};
+
+export default createAuthenticatedHandler;