use common vars in router, minor clean up (#551)

Signed-off-by: Roman <ixrock@gmail.com>

types/mocks.d.ts

@@ -1,5 +1,17 @@
+// Black-boxed modules without type safety
 declare module "electron-promise-ipc"
 declare module "mac-ca"
 declare module "win-ca"
 declare module "@hapi/call"
 declare module "@hapi/subtext"
+
+// Support import for custom module extensions
+// https://www.typescriptlang.org/docs/handbook/modules.html#wildcard-module-declarations
+declare module "*.scss" {
+  const content: string;
+  export = content;
+}
+declare module "*.ttf" {
+  const content: string;
+  export = content;
+}