diff --git a/src/public/app/widgets/type_widgets/options/advanced/database_anonymization.js b/src/public/app/widgets/type_widgets/options/advanced/database_anonymization.ts
similarity index 80%
rename from src/public/app/widgets/type_widgets/options/advanced/database_anonymization.js
rename to src/public/app/widgets/type_widgets/options/advanced/database_anonymization.ts
index e47f40b39..1b17253ea 100644
--- a/src/public/app/widgets/type_widgets/options/advanced/database_anonymization.js
+++ b/src/public/app/widgets/type_widgets/options/advanced/database_anonymization.ts
@@ -2,6 +2,7 @@ import OptionsWidget from "../options_widget.js";
 import toastService from "../../../../services/toast.js";
 import server from "../../../../services/server.js";
 import { t } from "../../../../services/i18n.js";
+import type { OptionMap } from "../../../../../../services/options_interface.js";
 
 const TPL = `
 <div class="options-section">
@@ -33,7 +34,22 @@ const TPL = `
     <ul class="existing-anonymized-databases"></ul>
 </div>`;
 
+// TODO: Deduplicate with server
+interface AnonymizeResponse {
+    success: boolean;
+    anonymizedFilePath: string;
+}
+
+interface AnonymizedDbResponse {
+    filePath: string;
+}
+
 export default class DatabaseAnonymizationOptions extends OptionsWidget {
+
+    private $anonymizeFullButton!: JQuery<HTMLElement>;
+    private $anonymizeLightButton!: JQuery<HTMLElement>;
+    private $existingAnonymizedDatabases!: JQuery<HTMLElement>;
+
     doRender() {
         this.$widget = $(TPL);
         this.$anonymizeFullButton = this.$widget.find(".anonymize-full-button");
@@ -41,7 +57,7 @@ export default class DatabaseAnonymizationOptions extends OptionsWidget {
         this.$anonymizeFullButton.on("click", async () => {
             toastService.showMessage(t("database_anonymization.creating_fully_anonymized_database"));
 
-            const resp = await server.post("database/anonymize/full");
+            const resp = await server.post<AnonymizeResponse>("database/anonymize/full");
 
             if (!resp.success) {
                 toastService.showError(t("database_anonymization.error_creating_anonymized_database"));
@@ -55,7 +71,7 @@ export default class DatabaseAnonymizationOptions extends OptionsWidget {
         this.$anonymizeLightButton.on("click", async () => {
             toastService.showMessage(t("database_anonymization.creating_lightly_anonymized_database"));
 
-            const resp = await server.post("database/anonymize/light");
+            const resp = await server.post<AnonymizeResponse>("database/anonymize/light");
 
             if (!resp.success) {
                 toastService.showError(t("database_anonymization.error_creating_anonymized_database"));
@@ -69,8 +85,8 @@ export default class DatabaseAnonymizationOptions extends OptionsWidget {
         this.$existingAnonymizedDatabases = this.$widget.find(".existing-anonymized-databases");
     }
 
-    optionsLoaded(options) {
-        server.get("database/anonymized-databases").then((anonymizedDatabases) => {
+    optionsLoaded(options: OptionMap) {
+        server.get<AnonymizedDbResponse[]>("database/anonymized-databases").then((anonymizedDatabases) => {
             this.$existingAnonymizedDatabases.empty();
 
             if (!anonymizedDatabases.length) {
diff --git a/src/public/app/widgets/type_widgets/options/advanced/database_integrity_check.js b/src/public/app/widgets/type_widgets/options/advanced/database_integrity_check.ts
similarity index 84%
rename from src/public/app/widgets/type_widgets/options/advanced/database_integrity_check.js
rename to src/public/app/widgets/type_widgets/options/advanced/database_integrity_check.ts
index 48b6927ae..ecd9c3b95 100644
--- a/src/public/app/widgets/type_widgets/options/advanced/database_integrity_check.js
+++ b/src/public/app/widgets/type_widgets/options/advanced/database_integrity_check.ts
@@ -6,22 +6,33 @@ import { t } from "../../../../services/i18n.js";
 const TPL = `
 <div class="options-section">
     <h4>${t("database_integrity_check.title")}</h4>
-    
+
     <p>${t("database_integrity_check.description")}</p>
-    
+
     <button class="check-integrity-button btn">${t("database_integrity_check.check_button")}</button>
     <button class="find-and-fix-consistency-issues-button btn">${t("consistency_checks.find_and_fix_button")}</button>
 </div>
 `;
 
+// TODO: Deduplicate with server
+interface Response {
+    results: {
+        integrity_check: string;
+    }[];
+}
+
 export default class DatabaseIntegrityCheckOptions extends OptionsWidget {
+
+    private $checkIntegrityButton!: JQuery<HTMLElement>;
+    private $findAndFixConsistencyIssuesButton!: JQuery<HTMLElement>;
+
     doRender() {
         this.$widget = $(TPL);
         this.$checkIntegrityButton = this.$widget.find(".check-integrity-button");
         this.$checkIntegrityButton.on("click", async () => {
             toastService.showMessage(t("database_integrity_check.checking_integrity"));
 
-            const { results } = await server.get("database/check-integrity");
+            const { results } = await server.get<Response>("database/check-integrity");
 
             if (results.length === 1 && results[0].integrity_check === "ok") {
                 toastService.showMessage(t("database_integrity_check.integrity_check_succeeded"));
diff --git a/src/public/app/widgets/type_widgets/options/advanced/sync.js b/src/public/app/widgets/type_widgets/options/advanced/sync.ts
similarity index 81%
rename from src/public/app/widgets/type_widgets/options/advanced/sync.js
rename to src/public/app/widgets/type_widgets/options/advanced/sync.ts
index 472ff8dbd..a98a7d6c9 100644
--- a/src/public/app/widgets/type_widgets/options/advanced/sync.js
+++ b/src/public/app/widgets/type_widgets/options/advanced/sync.ts
@@ -2,16 +2,21 @@ import OptionsWidget from "../options_widget.js";
 import server from "../../../../services/server.js";
 import toastService from "../../../../services/toast.js";
 import { t } from "../../../../services/i18n.js";
+import type { OptionMap } from "../../../../../../services/options_interface.js";
 
 const TPL = `
 <div class="options-section">
     <h4>${t("sync.title")}</h4>
-    <button class="force-full-sync-button btn">${t("sync.force_full_sync_button")}</button> 
-    
+    <button class="force-full-sync-button btn">${t("sync.force_full_sync_button")}</button>
+
     <button class="fill-entity-changes-button btn">${t("sync.fill_entity_changes_button")}</button>
 </div>`;
 
 export default class AdvancedSyncOptions extends OptionsWidget {
+
+    private $forceFullSyncButton!: JQuery<HTMLElement>;
+    private $fillEntityChangesButton!: JQuery<HTMLElement>;
+
     doRender() {
         this.$widget = $(TPL);
         this.$forceFullSyncButton = this.$widget.find(".force-full-sync-button");
@@ -31,5 +36,5 @@ export default class AdvancedSyncOptions extends OptionsWidget {
         });
     }
 
-    async optionsLoaded(options) {}
+    async optionsLoaded(options: OptionMap) {}
 }
diff --git a/src/public/app/widgets/type_widgets/options/advanced/vacuum_database.js b/src/public/app/widgets/type_widgets/options/advanced/vacuum_database.ts
similarity index 94%
rename from src/public/app/widgets/type_widgets/options/advanced/vacuum_database.js
rename to src/public/app/widgets/type_widgets/options/advanced/vacuum_database.ts
index 19c4a21a8..f4b007e61 100644
--- a/src/public/app/widgets/type_widgets/options/advanced/vacuum_database.js
+++ b/src/public/app/widgets/type_widgets/options/advanced/vacuum_database.ts
@@ -6,13 +6,15 @@ import { t } from "../../../../services/i18n.js";
 const TPL = `
 <div class="options-section">
     <h4>${t("vacuum_database.title")}</h4>
-    
+
     <p>${t("vacuum_database.description")}</p>
-    
+
     <button class="vacuum-database-button btn">${t("vacuum_database.button_text")}</button>
 </div>`;
 
 export default class VacuumDatabaseOptions extends OptionsWidget {
+    private $vacuumDatabaseButton!: JQuery<HTMLElement>;
+
     doRender() {
         this.$widget = $(TPL);
         this.$vacuumDatabaseButton = this.$widget.find(".vacuum-database-button");