Chore: Refactor renderer package: Limit dependency on @joplin/lib and improve type safety (#9701)

packages/renderer/defaultResourceModel.ts

@@ -0,0 +1,16 @@
+import { OptionsResourceModel } from './types';
+
+// Used for tests and when no ResourceModel is provided.
+
+const defaultResourceModel: OptionsResourceModel = {
+	isResourceUrl: (_url: string) => false,
+	urlToId: _url => {
+		throw new Error('Not implemented: urlToId');
+	},
+	filename: _url => {
+		throw new Error('Not implemented: filename');
+	},
+	isSupportedImageMimeType: _type => false,
+};
+
+export default defaultResourceModel;