Convert LifecycleStore to Typescript

src/stores/LifecycleStore.ts

@@ -0,0 +1,87 @@
+/*
+Copyright 2017-2021 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { Store } from 'flux/utils';
+
+import dis from '../dispatcher/dispatcher';
+import { ActionPayload } from "../dispatcher/payloads";
+
+interface IState {
+    deferredAction: any;
+}
+
+const INITIAL_STATE = {
+    deferredAction: null,
+};
+
+/**
+ * A class for storing application state to do with authentication. This is a simple flux
+ * store that listens for actions and updates its state accordingly, informing any
+ * listeners (views) of state changes.
+ */
+class LifecycleStore extends Store<ActionPayload> {
+    private state: IState = INITIAL_STATE;
+
+    constructor() {
+        super(dis);
+    }
+
+    private setState(newState: Partial<IState>) {
+        this.state = Object.assign(this.state, newState);
+        this.__emitChange();
+    }
+
+    protected __onDispatch(payload: ActionPayload) {
+        switch (payload.action) {
+            case 'do_after_sync_prepared':
+                this.setState({
+                    deferredAction: payload.deferred_action,
+                });
+                break;
+            case 'cancel_after_sync_prepared':
+                this.setState({
+                    deferredAction: null,
+                });
+                break;
+            case 'syncstate': {
+                if (payload.state !== 'PREPARED') {
+                    break;
+                }
+                if (!this.state.deferredAction) break;
+                const deferredAction = Object.assign({}, this.state.deferredAction);
+                this.setState({
+                    deferredAction: null,
+                });
+                dis.dispatch(deferredAction);
+                break;
+            }
+            case 'on_client_not_viable':
+            case 'on_logged_out':
+                this.reset();
+                break;
+        }
+    }
+
+    private reset() {
+        this.state = Object.assign({}, INITIAL_STATE);
+    }
+}
+
+let singletonLifecycleStore = null;
+if (!singletonLifecycleStore) {
+    singletonLifecycleStore = new LifecycleStore();
+}
+export default singletonLifecycleStore;