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How to use the @polkadot/rpc-core/rxjs.drr function in @polkadot/rpc-core

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polkadot-js / api / packages / api-derive / src / util / memo.ts View on Github

(...params: any[]): Observable =&gt;
      Observable.create((observer: Observer): VoidCallback =&gt; {
        const sub = inner(...params).subscribe(observer);

        return (): void =&gt; {
          cached.delete(...params);
          sub.unsubscribe();
        };
      }).pipe(drr()),
    { normalizer }