diff --git a/.eslintrc.js b/.eslintrc.js
index b5a8a66..511d279 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -27,12 +27,13 @@ module.exports = {
   ],
   rules: {
     '@typescript-eslint/no-unused-vars': [
-      'warn',
+      'error',
       {
         argsIgnorePattern: '^_',
         varsIgnorePattern: '^_',
         caughtErrorsIgnorePattern: '^_',
       },
     ],
+    '@typescript-eslint/no-explicit-any': 'error',
   },
 };
diff --git a/src/app.tsx b/src/app.tsx
index 8c206e8..4a005b8 100644
--- a/src/app.tsx
+++ b/src/app.tsx
@@ -437,6 +437,7 @@ export function App() {
             setSelection(newSelection);
             setDetailIndi(newSelection.id);
             setState(AppState.SHOWING_CHART);
+            // eslint-disable-next-line @typescript-eslint/no-explicit-any
           } catch (error: any) {
             setState(AppState.SHOWING_CHART);
             displayErrorPopup(
diff --git a/src/datasource/wikitree_transformer.ts b/src/datasource/wikitree_transformer.ts
index 21550a5..be945f8 100644
--- a/src/datasource/wikitree_transformer.ts
+++ b/src/datasource/wikitree_transformer.ts
@@ -119,9 +119,9 @@ export function convertFams(people: Person[]): JsonFam[] {
     if (husband) {
       fam.husb = husband;
     }
-    fam.children = Array.from(getSet(children, key)).map(
-      (child) => idToName.get(child)!,
-    );
+    fam.children = Array.from(getSet(children, key))
+      .map((child) => idToName.get(child))
+      .filter((x) => !!x) as string[];
     if (
       value.spouse &&
       ((value.spouse.marriage_date &&
diff --git a/src/donatso-chart.tsx b/src/donatso-chart.tsx
index ac015bb..7885f05 100644
--- a/src/donatso-chart.tsx
+++ b/src/donatso-chart.tsx
@@ -1,4 +1,12 @@
-import f3 from 'family-chart';
+import {
+  Datum,
+  Store,
+  TreeDatum,
+  createStore,
+  createSvg,
+  elements,
+  view,
+} from 'family-chart';
 import {useEffect, useRef} from 'react';
 import {IntlShape, useIntl} from 'react-intl';
 import {IndiInfo, JsonFam, JsonGedcomData} from 'topola';
@@ -15,7 +23,7 @@ function getOtherSpouse(fam: JsonFam, indi: string) {
   return fam.husb === indi ? fam.wife : fam.husb;
 }
 
-function convertData(data: JsonGedcomData, intl: IntlShape) {
+function convertData(data: JsonGedcomData, intl: IntlShape): Datum[] {
   const famMap = new Map<string, JsonFam>();
   data.fams.forEach((fam) => famMap.set(fam.id, fam));
   return data.indis.map((indi) => {
@@ -25,6 +33,7 @@ function convertData(data: JsonGedcomData, intl: IntlShape) {
       .filter((fam): fam is JsonFam => fam !== undefined);
     const father = famc?.husb;
     const mother = famc?.wife;
+    const parents = [father, mother].filter((x) => !!x);
     const spouses = fams
       .map((fam) => getOtherSpouse(fam, indi.id))
       .filter((indi): indi is string => indi !== undefined);
@@ -40,40 +49,51 @@ function convertData(data: JsonGedcomData, intl: IntlShape) {
         gender: indi.sex,
       },
       rels: {
-        father,
-        mother,
+        parents,
         spouses,
         children,
       },
-    };
+    } as Datum;
   });
 }
 
 class ChartWrapper {
-  private store?: any;
+  private store!: Store;
 
   initializeChart(props: DonatsoChartProps, intl: IntlShape) {
     const data = convertData(props.data, intl);
-    this.store = f3.createStore({
+    this.store = createStore({
       data,
       main_id: props.selection.id,
     });
-    const svg = f3.createSvg(document.querySelector('#dotatsoSvgContainer'));
-    const card = f3.elements.Card({
+    // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+    const svg = createSvg(document.querySelector('#dotatsoSvgContainer')!);
+    const card = elements.CardSvg({
       store: this.store,
       svg,
       card_display: [
-        (i: any) =>
+        (i: Datum) =>
           `${i.data['first name'] || ''} ${i.data['last name'] || ''}`,
-        (i: any) => `${i.data.birthday || ''}`,
-      ],
+        (i: Datum) => `${i.data.birthday || ''}`,
+      ] as any, // eslint-disable-line @typescript-eslint/no-explicit-any
       mini_tree: true,
       link_break: false,
-      onCardClick: (e: any, d: any) =>
+      onCardClick: (e: MouseEvent, d: TreeDatum) =>
         props.onSelection({id: d.data.id, generation: 0}),
+      card_dim: {
+        w: 220,
+        h: 70,
+        text_x: 75,
+        text_y: 15,
+        img_w: 60,
+        img_h: 60,
+        img_x: 5,
+        img_y: 5,
+      },
     });
-    this.store.setOnUpdate((props: any) => {
-      f3.view(this.store.getTree(), svg, card, props || {});
+    this.store.setOnUpdate((props: unknown) => {
+      // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+      view(this.store.getTree()!, svg, card, props || {});
     });
     this.store.updateTree({initial: true});
   }
diff --git a/src/family-chart.d.ts b/src/family-chart.d.ts
deleted file mode 100644
index 89f1ee9..0000000
--- a/src/family-chart.d.ts
+++ /dev/null
@@ -1,8 +0,0 @@
-/* eslint-disable @typescript-eslint/no-explicit-any */
-// Data type definitions for the family-chart library.
-declare module 'family-chart' {
-  export function createStore(args: any): any;
-  export function createSvg(args: any): any;
-  export function view(arg1: any, arg2: any, arg3: any, arg4: any): any;
-  export const elements: any;
-}
diff --git a/src/menu/search_index.ts b/src/menu/search_index.ts
index 51031c3..cde5db6 100644
--- a/src/menu/search_index.ts
+++ b/src/menu/search_index.ts
@@ -104,7 +104,7 @@ class LunrSearchIndex implements SearchIndex {
   }
 
   private initMultiLingualLunrWithoutTrimmer(
-    lunrInstance: any,
+    lunrInstance: lunr.Builder,
     languages: string[],
   ): void {
     const pipelineFunctions: PipelineFunction[] = [];
@@ -142,13 +142,16 @@ class LunrSearchIndex implements SearchIndex {
       .filter((s) => !!s)
       .map((s) => `${s} ${s}*`)
       .join(' ');
-    const results = this.index!.search(query);
+    const results = this.index.search(query);
     return results
       .sort(compare)
       .slice(0, MAX_RESULTS)
       .map((result) => ({
         id: result.ref,
-        indi: this.indiMap.get(result.ref)!,
+        indi: this.indiMap.get(result.ref) || {
+          id: result.ref,
+          firstName: 'INDI NOT FOUND',
+        },
       }));
   }
 }