Fix iOS 12 crashing in scroller

src/utils/string.test.ts

@@ -0,0 +1,42 @@
+import { describe, expect, it } from 'vitest';
+
+import { toBoolean, toFloat } from './string';
+
+describe('toBoolean', () => {
+    it('Should return the boolean represented by the string', () => {
+        let bool = toBoolean('true');
+        expect(bool).toBe(true);
+
+        bool = toBoolean('false', true);
+        expect(bool).toBe(false);
+    });
+
+    it('Should return default value for invalid values', () => {
+        let bool = toBoolean('test');
+        expect(bool).toBe(false);
+
+        bool = toBoolean(undefined);
+        expect(bool).toBe(false);
+
+        bool = toBoolean(null, true);
+        expect(bool).toBe(true);
+    });
+});
+
+describe('toFloat()', () => {
+    it('Should return a float', () => {
+        const number = toFloat('3.14159');
+        expect(number).toBe(3.14159);
+    });
+
+    it('Should return default value for NaN', () => {
+        let number = toFloat('test');
+        expect(number).toBe(0);
+
+        number = toFloat(undefined);
+        expect(number).toBe(0);
+
+        number = toFloat(null, -1);
+        expect(number).toBe(-1);
+    });
+});

src/utils/string.ts

@@ -19,9 +19,10 @@ export function toBoolean(value: string | undefined | null, defaultValue = false
  * @returns {number} The value.
  */
 export function toFloat(value: string | null | undefined, defaultValue = 0) {
-    if (!value || isNaN(value as never)) {
-        return defaultValue;
-    } else {
-        return parseFloat(value);
-    }
+    if (!value) return defaultValue;
+
+    const number = parseFloat(value);
+    if (isNaN(number)) return defaultValue;
+
+    return number;
 }