Convert bunch of things to TypeScript

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

src/@types/global.d.ts

@@ -0,0 +1,25 @@
+/*
+Copyright 2020 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.
+*/
+
+export {};
+
+declare global {
+    namespace NodeJS {
+        interface Global {
+            localStorage: any;
+        }
+    }
+}

src/matrix.ts

@@ -17,7 +17,12 @@ limitations under the License.
 */
 
 import {MemoryCryptoStore} from "./crypto/store/memory-crypto-store";
+import {LocalStorageCryptoStore} from "./crypto/store/localStorage-crypto-store";
+import {IndexedDBCryptoStore} from "./crypto/store/indexeddb-crypto-store";
 import {MemoryStore} from "./store/memory";
+import {StubStore} from "./store/stub";
+import {LocalIndexedDBStoreBackend} from "./store/indexeddb-local-backend";
+import {RemoteIndexedDBStoreBackend} from "./store/indexeddb-remote-backend";
 import {MatrixScheduler} from "./scheduler";
 import {MatrixClient} from "./client";
 
@@ -89,6 +94,10 @@ export function wrapRequest(wrapper) {
     };
 }
 
+type Store =
+    StubStore | MemoryStore | LocalIndexedDBStoreBackend | RemoteIndexedDBStoreBackend;
+
+type CryptoStore = MemoryCryptoStore | LocalStorageCryptoStore | IndexedDBCryptoStore;
 
 let cryptoStoreFactory = () => new MemoryCryptoStore;
 
@@ -102,6 +111,15 @@ export function setCryptoStoreFactory(fac) {
     cryptoStoreFactory = fac;
 }
 
+
+interface ICreateClientOpts {
+    baseUrl: string;
+    store?: Store;
+    cryptoStore?: CryptoStore;
+    scheduler?: MatrixScheduler;
+    request?: any; // TODO
+}
+
 /**
  * Construct a Matrix Client. Similar to {@link module:client.MatrixClient}
  * except that the 'request', 'store' and 'scheduler' dependencies are satisfied.
@@ -125,10 +143,10 @@ export function setCryptoStoreFactory(fac) {
  * @see {@link module:client.MatrixClient} for the full list of options for
  * <code>opts</code>.
  */
-export function createClient(opts) {
+export function createClient(opts: ICreateClientOpts | string) {
     if (typeof opts === "string") {
         opts = {
-            "baseUrl": opts,
+            "baseUrl": opts as string,
         };
     }
     opts.request = opts.request || requestInstance;

src/utils.ts

@@ -265,7 +265,7 @@ export function checkObjectHasNoAdditionalKeys(obj: object, allowedKeys: string[
  * @param {Object} obj The object to deep copy.
  * @return {Object} A copy of the object without any references to the original.
  */
-export function deepCopy(obj: object): object {
+export function deepCopy<T>(obj: T): T {
     return JSON.parse(JSON.stringify(obj));
 }