Enable noImplicitAny (#2895)

* Stash noImplicitAny work

* Enable noImplicitAny

* Update olm

* Fun

* Fix msgid stuff

* Fix tests

* Attempt to fix Browserify

src/browser-index.ts

@@ -0,0 +1,47 @@
+/*
+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 * as matrixcs from "./matrix";
+
+type BrowserMatrix = typeof matrixcs;
+declare global {
+    /* eslint-disable no-var, camelcase */
+    var __js_sdk_entrypoint: boolean;
+    var matrixcs: BrowserMatrix;
+    /* eslint-enable no-var */
+}
+
+if (global.__js_sdk_entrypoint) {
+    throw new Error("Multiple matrix-js-sdk entrypoints detected!");
+}
+global.__js_sdk_entrypoint = true;
+
+// just *accessing* indexedDB throws an exception in firefox with indexeddb disabled.
+let indexedDB: IDBFactory | undefined;
+try {
+    indexedDB = global.indexedDB;
+} catch (e) {}
+
+// if our browser (appears to) support indexeddb, use an indexeddb crypto store.
+if (indexedDB) {
+    matrixcs.setCryptoStoreFactory(() => new matrixcs.IndexedDBCryptoStore(indexedDB!, "matrix-js-sdk:crypto"));
+}
+
+// We export 3 things to make browserify happy as well as downstream projects.
+// It's awkward, but required.
+export * from "./matrix";
+export default matrixcs; // keep export for browserify package deps
+global.matrixcs = matrixcs;