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 export function *incrementSaga() {
   let counter;
   while (true) {
     yield take('COUNT_UP');
     counter = 1;

     while (true) {
       const { inc } = yield race({
         inc: take('COUNT_UP'),
         timeout: call(delay, 5000),
       });

       if (inc) {
         counter++;
       }
       else {
         yield put({ type: 'USER_COUNTED', value: counter });
         break;
       }
     }
   }
 }

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