Split electron-main into smaller chunks (#377)

* Split electron-main into smaller chunks

* Affix @types/node version and upgrade electron-store

* Iterate PR

* tidy up

* Actually run the split out code

src/keytar.ts

@@ -0,0 +1,31 @@
+/*
+Copyright 2022 New Vector Ltd
+
+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 type * as Keytar from "keytar"; // Hak dependency type
+
+let keytar: typeof Keytar | undefined;
+try {
+    // eslint-disable-next-line @typescript-eslint/no-var-requires
+    keytar = require('keytar');
+} catch (e) {
+    if (e.code === "MODULE_NOT_FOUND") {
+        console.log("Keytar isn't installed; secure key storage is disabled.");
+    } else {
+        console.warn("Keytar unexpected error:", e);
+    }
+}
+
+export { keytar };