Convert bunch of utils to TS

src/utils/createMatrixClient.ts

@@ -0,0 +1,74 @@
+/*
+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 { createClient, ICreateClientOpts } from "matrix-js-sdk/src/matrix";
+import { IndexedDBCryptoStore } from "matrix-js-sdk/src/crypto/store/indexeddb-crypto-store";
+import { WebStorageSessionStore } from "matrix-js-sdk/src/store/session/webstorage";
+import { IndexedDBStore } from "matrix-js-sdk/src/store/indexeddb";
+
+const localStorage = window.localStorage;
+
+// just *accessing* indexedDB throws an exception in firefox with
+// indexeddb disabled.
+let indexedDB;
+try {
+    indexedDB = window.indexedDB;
+} catch (e) {}
+
+/**
+ * Create a new matrix client, with the persistent stores set up appropriately
+ * (using localstorage/indexeddb, etc)
+ *
+ * @param {Object} opts  options to pass to Matrix.createClient. This will be
+ *    extended with `sessionStore` and `store` members.
+ *
+ * @property {string} indexedDbWorkerScript  Optional URL for a web worker script
+ *    for IndexedDB store operations. By default, indexeddb ops are done on
+ *    the main thread.
+ *
+ * @returns {MatrixClient} the newly-created MatrixClient
+ */
+export default function createMatrixClient(opts: ICreateClientOpts) {
+    const storeOpts: Partial<ICreateClientOpts> = {
+        useAuthorizationHeader: true,
+    };
+
+    if (indexedDB && localStorage) {
+        storeOpts.store = new IndexedDBStore({
+            indexedDB: indexedDB,
+            dbName: "riot-web-sync",
+            localStorage: localStorage,
+            workerScript: createMatrixClient.indexedDbWorkerScript,
+        });
+    }
+
+    if (localStorage) {
+        storeOpts.sessionStore = new WebStorageSessionStore(localStorage);
+    }
+
+    if (indexedDB) {
+        storeOpts.cryptoStore = new IndexedDBCryptoStore(
+            indexedDB, "matrix-js-sdk:crypto",
+        );
+    }
+
+    return createClient({
+        ...storeOpts,
+        ...opts,
+    });
+}
+
+createMatrixClient.indexedDbWorkerScript = null;