How to use the @redux-saga/core/effects.fork function in @redux-saga/core

const rootSaga = function*() {
            yield all([
                yield fork(battle, _this.turnSimulator, _this.turnCount, _this.turnDuration),
                yield takeEvery(
                    BATTLE_FINISHED,
                    function*() {
                        _this.onServerFinishMatch();
                    }
                )
            ]);
        };

const rootSaga = function*() {
        yield all([
            yield fork(evolutionSagaFactory())
        ]);
    };

export const notifications = function*() {
    yield all([
        yield fork(sendNotifications),
        yield fork(clearNotifications)
    ]);
};

yield put(joinLobbyAction(
                response.playerId,
                response.lobbyId,
                response.players,
                response.startTimestamp,
                response.isHost
            ));
            break;
        }

        yield put(joinGameError(error));
        action = yield take([FIND_GAME, JOIN_GAME, CREATE_GAME]);
    }

    yield fork(writeActionsToPackets);
    yield fork(writePacketsToSocket, socket);
};

if (!error) {
            yield put(joinLobbyAction(
                response.playerId,
                response.lobbyId,
                response.players,
                response.startTimestamp,
                response.isHost
            ));
            break;
        }

        yield put(joinGameError(error));
        action = yield take([FIND_GAME, JOIN_GAME, CREATE_GAME]);
    }

    yield fork(writeActionsToPackets);
    yield fork(writePacketsToSocket, socket);
};

export const rootSaga = function*() {
    yield all([
        yield fork(networking),
        yield fork(phaseTimer),
        yield fork(lobbyTimer),
        yield fork(announcement),
        yield fork(gamePhase),
        yield fork(preventAccidentalClose),
        yield fork(cardShop),
        yield fork(evolutionSagaFactory()),
        yield fork(battle, new TurnSimulator(new DefinitionProvider()), DEFAULT_TURN_COUNT, DEFAULT_TURN_DURATION)
    ]);
};

export const rootSaga = function*() {
    yield all([
        yield fork(networking),
        yield fork(phaseTimer),
        yield fork(lobbyTimer),
        yield fork(announcement),
        yield fork(gamePhase),
        yield fork(preventAccidentalClose),
        yield fork(cardShop),
        yield fork(evolutionSagaFactory()),
        yield fork(battle, new TurnSimulator(new DefinitionProvider()), DEFAULT_TURN_COUNT, DEFAULT_TURN_DURATION)
    ]);
};

export const notifications = function*() {
    yield all([
        yield fork(sendNotifications),
        yield fork(clearNotifications)
    ]);
};

export const rootSaga = function*() {
    yield all([
        yield fork(networking),
        yield fork(phaseTimer),
        yield fork(lobbyTimer),
        yield fork(announcement),
        yield fork(gamePhase),
        yield fork(preventAccidentalClose),
        yield fork(cardShop),
        yield fork(evolutionSagaFactory()),
        yield fork(battle, new TurnSimulator(new DefinitionProvider()), DEFAULT_TURN_COUNT, DEFAULT_TURN_DURATION)
    ]);
};

export const rootSaga = function*() {
    yield all([
        yield fork(networking),
        yield fork(phaseTimer),
        yield fork(lobbyTimer),
        yield fork(announcement),
        yield fork(gamePhase),
        yield fork(preventAccidentalClose),
        yield fork(cardShop),
        yield fork(evolutionSagaFactory()),
        yield fork(battle, new TurnSimulator(new DefinitionProvider()), DEFAULT_TURN_COUNT, DEFAULT_TURN_DURATION)
    ]);
};