diff --git a/package-lock.json b/package-lock.json
index a64daab..da6648c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,10 +1,12 @@
 {
   "name": "rappli",
+  "version": "0.0.1",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "rappli",
+      "version": "0.0.1",
       "license": "MIT",
       "dependencies": {
         "solid-start": "v0.1.0-alpha.89",
@@ -19,6 +21,8 @@
         "@tailwindcss/typography": "^0.5.2",
         "@thisbeyond/solid-select": "^0.11.0",
         "@types/big.js": "^6.1.3",
+        "@types/qrcode": "^1.4.2",
+        "@types/sortablejs": "^1.13.0",
         "autoprefixer": "^10.4.2",
         "autosize": "^5.0.1",
         "big.js": "^6.2.0",
@@ -1915,6 +1919,15 @@
       "integrity": "sha512-Gj7cI7z+98M282Tqmp2K5EIsoouUEzbBJhQQzDE3jSIRk6r9gsz0oUokqIUR4u1R3dMHo0pDHM7sNOHyhulypw==",
       "dev": true
     },
+    "node_modules/@types/qrcode": {
+      "version": "1.4.2",
+      "resolved": "https://registry.npmjs.org/@types/qrcode/-/qrcode-1.4.2.tgz",
+      "integrity": "sha512-7uNT9L4WQTNJejHTSTdaJhfBSCN73xtXaHFyBJ8TSwiLhe4PRuTue7Iph0s2nG9R/ifUaSnGhLUOZavlBEqDWQ==",
+      "dev": true,
+      "dependencies": {
+        "@types/node": "*"
+      }
+    },
     "node_modules/@types/resolve": {
       "version": "1.17.1",
       "resolved": "https://registry.npmjs.org/@types/resolve/-/resolve-1.17.1.tgz",
@@ -1923,6 +1936,12 @@
         "@types/node": "*"
       }
     },
+    "node_modules/@types/sortablejs": {
+      "version": "1.13.0",
+      "resolved": "https://registry.npmjs.org/@types/sortablejs/-/sortablejs-1.13.0.tgz",
+      "integrity": "sha512-C3064MH72iEfeGCYEGCt7FCxXoAXaMPG0QPnstcxvPmbl54erpISu06d++FY37Smja64iWy5L8wOyHHBghWbJQ==",
+      "dev": true
+    },
     "node_modules/@types/unist": {
       "version": "2.0.6",
       "resolved": "https://registry.npmjs.org/@types/unist/-/unist-2.0.6.tgz",
@@ -9500,6 +9519,15 @@
       "integrity": "sha512-Gj7cI7z+98M282Tqmp2K5EIsoouUEzbBJhQQzDE3jSIRk6r9gsz0oUokqIUR4u1R3dMHo0pDHM7sNOHyhulypw==",
       "dev": true
     },
+    "@types/qrcode": {
+      "version": "1.4.2",
+      "resolved": "https://registry.npmjs.org/@types/qrcode/-/qrcode-1.4.2.tgz",
+      "integrity": "sha512-7uNT9L4WQTNJejHTSTdaJhfBSCN73xtXaHFyBJ8TSwiLhe4PRuTue7Iph0s2nG9R/ifUaSnGhLUOZavlBEqDWQ==",
+      "dev": true,
+      "requires": {
+        "@types/node": "*"
+      }
+    },
     "@types/resolve": {
       "version": "1.17.1",
       "resolved": "https://registry.npmjs.org/@types/resolve/-/resolve-1.17.1.tgz",
@@ -9508,6 +9536,12 @@
         "@types/node": "*"
       }
     },
+    "@types/sortablejs": {
+      "version": "1.13.0",
+      "resolved": "https://registry.npmjs.org/@types/sortablejs/-/sortablejs-1.13.0.tgz",
+      "integrity": "sha512-C3064MH72iEfeGCYEGCt7FCxXoAXaMPG0QPnstcxvPmbl54erpISu06d++FY37Smja64iWy5L8wOyHHBghWbJQ==",
+      "dev": true
+    },
     "@types/unist": {
       "version": "2.0.6",
       "resolved": "https://registry.npmjs.org/@types/unist/-/unist-2.0.6.tgz",
diff --git a/package.json b/package.json
index 2f16103..0517d35 100644
--- a/package.json
+++ b/package.json
@@ -24,6 +24,8 @@
     "@tailwindcss/typography": "^0.5.2",
     "@thisbeyond/solid-select": "^0.11.0",
     "@types/big.js": "^6.1.3",
+    "@types/qrcode": "^1.4.2",
+    "@types/sortablejs": "^1.13.0",
     "autoprefixer": "^10.4.2",
     "autosize": "^5.0.1",
     "big.js": "^6.2.0",
diff --git a/src/components/QrCode.tsx b/src/components/QrCode.tsx
index a85716a..1decf7f 100644
--- a/src/components/QrCode.tsx
+++ b/src/components/QrCode.tsx
@@ -28,13 +28,13 @@ const QrCode: Component<
       return qrcode.toString(value, {
         type: "svg",
         margin: props.margin,
-        errorCorrectionLevel: props.errorCorrectionLevel,
+        errorCorrectionLevel: props.errorCorrectionLevel as any,
       });
     }
   );
 
   createEffect(() => {
-    const html = svg();
+    const html = svg() || "";
     requestAnimationFrame(function () {
       ref.innerHTML = html;
     });
diff --git a/src/components/Settings/Positions.tsx b/src/components/Settings/Positions.tsx
index 6783335..57c49a5 100644
--- a/src/components/Settings/Positions.tsx
+++ b/src/components/Settings/Positions.tsx
@@ -72,12 +72,16 @@ export const PositionsSettings: Component = () => {
           ghostClass: "sortable-ghost-card",
           filter: ".drag-disabled",
           // forceFallback: true,
-          onEnd: (evt: any) => {
+          onEnd: (evt) => {
+            const oldIndex = evt.oldIndex;
+            const newIndex = evt.newIndex;
+            if (oldIndex == null || newIndex == null) {
+              return;
+            }
+
             setState(
               "positions",
               produce((positions: any[]) => {
-                const oldIndex = evt.oldIndex;
-                const newIndex = evt.newIndex;
                 let item = positions[oldIndex];
                 positions.splice(oldIndex, 1);
                 positions.splice(newIndex, 0, unwrap(item));
diff --git a/src/directives/sortable.tsx b/src/directives/sortable.tsx
index b1dab0d..56cfda9 100644
--- a/src/directives/sortable.tsx
+++ b/src/directives/sortable.tsx
@@ -3,20 +3,24 @@ import Sortable from "sortablejs";
 
 // https://github.com/SortableJS/Sortable
 
-export const sortable = (el: HTMLElement, config: () => any) => {
+export const sortable = (el: HTMLElement, config: () => Sortable.Options) => {
   onMount(function () {
     const config_ = config();
 
     const userOnEnd = config_?.onEnd;
     if (userOnEnd) {
       config_.onEnd = (evt) => {
-        const parent = evt.from;
-        const oldNextSibling =
-          parent.children[evt.oldIndex + (evt.oldIndex > evt.newIndex ? 1 : 0)];
-        if (oldNextSibling) {
-          parent.insertBefore(evt.item, oldNextSibling);
-        } else {
-          parent.append(evt.item);
+        if (evt.oldIndex != null && evt.newIndex != null) {
+          const parent = evt.from;
+          const oldNextSibling =
+            parent.children[
+              evt.oldIndex + (evt.oldIndex > evt.newIndex ? 1 : 0)
+            ];
+          if (oldNextSibling) {
+            parent.insertBefore(evt.item, oldNextSibling);
+          } else {
+            parent.append(evt.item);
+          }
         }
 
         userOnEnd(evt);
@@ -34,7 +38,7 @@ export const sortable = (el: HTMLElement, config: () => any) => {
 declare module "solid-js" {
   namespace JSX {
     interface Directives {
-      sortable: any;
+      sortable: Sortable.Options;
     }
   }
 }
diff --git a/src/index.d.ts b/src/index.d.ts
index 40aeb06..42547be 100644
--- a/src/index.d.ts
+++ b/src/index.d.ts
@@ -1,2 +1,4 @@
 declare const __APP_VERSION__: string;
 declare const __BUILD_TIME__: number;
+declare module "typer-js";
+declare module "autosize";