import { type DrrResult } from "https://deno.land/x/polkadot@0.2.40/rpc-core/util/index.ts";
definition: <T>(source$: Observable<T>) => Observable<T>
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import { type DrrResult } from "https://deno.land/x/polkadot@0.2.40/rpc-core/util/index.ts";