convert terminal from epic to saga

src/epics/index.ts

@@ -5,10 +5,9 @@ import { Epic, combineEpics } from 'redux-observable';
 import { catchError } from 'rxjs/operators';
 import ble from './ble';
 import hub from './hub';
-import terminal from './terminal';
 
 const rootEpic: Epic = (action$, store$, dependencies) =>
-    combineEpics(ble, hub, terminal)(action$, store$, dependencies).pipe(
+    combineEpics(ble, hub)(action$, store$, dependencies).pipe(
         catchError((error, source) => {
             console.error(error);
             return source;

src/epics/terminal.ts

@@ -1,32 +0,0 @@
-// SPDX-License-Identifier: MIT
-// Copyright (c) 2020 The Pybricks Authors
-
-import { AnyAction } from 'redux';
-import { Epic, combineEpics, ofType } from 'redux-observable';
-import { Subject } from 'rxjs';
-import { ignoreElements, map, tap } from 'rxjs/operators';
-import { write } from '../actions/ble';
-import { TerminalDataAction, TerminalDataActionType } from '../actions/terminal';
-
-const encoder = new TextEncoder();
-
-const terminalOutputSubject = new Subject<string>();
-export const terminalOutput = terminalOutputSubject.asObservable();
-
-// When terminal has focus this receives the input. All input is sent over BLE connection.
-const receiveTerminalData: Epic = (action$) =>
-    action$.pipe(
-        ofType<AnyAction, TerminalDataAction>(TerminalDataActionType.ReceivedData),
-        map((a) => write(encoder.encode(a.value))),
-    );
-
-// Request to write to the terminal are handled by an observable rather than
-// using redux state.
-const sendTerminalData: Epic = (action$) =>
-    action$.pipe(
-        ofType<AnyAction, TerminalDataAction>(TerminalDataActionType.SendData),
-        tap((a) => terminalOutputSubject.next(a.value)),
-        ignoreElements(),
-    );
-
-export default combineEpics(receiveTerminalData, sendTerminalData);