Function setReader

packages/computer/src/runtime/runtime.ts:311–315

(
            active: ReadableStreamDefaultReader<WorkspaceRuntimeEvent> | undefined,
          )

        claimed = "result";
        resultPromise ??= (async () => {
          const setReader = (
            active: ReadableStreamDefaultReader<WorkspaceRuntimeEvent> | undefined,
          ) => {
            resultReader = active;
          };
          if (resultMayUseSource && !sourceCancelled) {
            return drainModuleResult<E>(source, encoding, setReader);
          }