Test typescriptification - room-member and room-state (#2601)

* renamed:    spec/MockStorageApi.js -> spec/MockStorageApi.ts

* renamed:    spec/olm-loader.js -> spec/olm-loader.t

* renamed:    spec/unit/room-state.spec.js -> spec/unit/room-state.spec.ts

* ts fixes in room-state.spec

* renamed:    spec/unit/room-member.spec.js -> spec/unit/room-member.spec.ts

* ts fixes in room-member.spec

* strict mode fixes for MockStorageApi

* strict ts fixes in room-state

* strict errors

spec/olm-loader.ts

@@ -0,0 +1,37 @@
+/*
+Copyright 2017 Vector creations Ltd
+Copyright 2019 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 { logger } from '../src/logger';
+import * as utils from "../src/utils";
+
+// try to load the olm library.
+try {
+    // eslint-disable-next-line @typescript-eslint/no-var-requires
+    global.Olm = require('@matrix-org/olm');
+    logger.log('loaded libolm');
+} catch (e) {
+    logger.warn("unable to run crypto tests: libolm not available");
+}
+
+// also try to set node crypto
+try {
+    // eslint-disable-next-line @typescript-eslint/no-var-requires
+    const crypto = require('crypto');
+    utils.setCrypto(crypto);
+} catch (err) {
+    logger.log('nodejs was compiled without crypto support: some tests will fail');
+}