fix: add sumObjectValues helper and test

src/util/__tests__/helpers.spec.js

@@ -0,0 +1,45 @@
+import { sumObjectValues } from '../helpers.js'
+
+describe('sumObjectValues', () => {
+    it('should return 0 for an empty object', () => {
+        expect(sumObjectValues({})).toBe(0)
+    })
+
+    it('should sum flat numeric values in an object', () => {
+        expect(sumObjectValues({ a: 1, b: 2, c: 3 })).toBe(6)
+    })
+
+    it('should handle nested objects correctly', () => {
+        const obj = {
+            a: 1,
+            b: { c: 2, d: { e: 3 } },
+        }
+        expect(sumObjectValues(obj)).toBe(6)
+    })
+
+    it('should ignore non-numeric values', () => {
+        const obj = {
+            a: 1,
+            b: 'string',
+            c: { d: 2, e: null, f: true },
+        }
+        expect(sumObjectValues(obj)).toBe(3)
+    })
+
+    it('should handle an object with only non-numeric values', () => {
+        const obj = {
+            a: 'string',
+            b: null,
+            c: undefined,
+        }
+        expect(sumObjectValues(obj)).toBe(0)
+    })
+
+    it('should handle arrays as object values', () => {
+        const obj = {
+            a: [1, 2, 3],
+            b: { c: [4, 5], d: 6 },
+        }
+        expect(sumObjectValues(obj)).toBe(21) // Note: Array elements aren't handled differently, treated as objects.
+    })
+})

src/util/helpers.js

@@ -141,3 +141,16 @@ export const getLongestTextLength = (array, key) =>
                 : text,
         ''
     ).length
+
+// Sum all numbers in an object recursively
+export const sumObjectValues = (obj) =>
+    Object.values(obj).reduce((sum, value) => {
+        if (value === null || value === undefined) {
+            return sum
+        } else if (typeof value === 'object') {
+            return sum + sumObjectValues(value)
+        } else if (typeof value === 'number') {
+            return sum + value
+        }
+        return sum
+    }, 0)