fix(flattenObject): flatten for nested objects (#817)

* fix(flattenObject): flatten for nested objects * simplify logic * style --------- Co-authored-by: Sojin Park <[email protected]>
toss · Dec 1, 2024 · 7d9b11d · 7d9b11d
1 parent 9a6a7db
commit 7d9b11d
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Showing 2 changed files with 14 additions and 3 deletions.
diff --git a/src/object/flattenObject.spec.ts b/src/object/flattenObject.spec.ts
@@ -141,4 +141,17 @@ describe('flattenObject', function () {
       'a.2': 3,
     });
   });
+
+  it('handles object arrays', () => {
+    const result = flattenObject({
+      a: [1, { b: 2 }, 3, [{ c: 4 }]],
+    });
+
+    expect(result).toEqual({
+      'a.0': 1,
+      'a.1.b': 2,
+      'a.2': 3,
+      'a.3.0.c': 4,
+    });
+  });
 });
diff --git a/src/object/flattenObject.ts b/src/object/flattenObject.ts
@@ -45,9 +45,7 @@ function flattenObjectImpl(object: object, prefix = ''): Record<string, any> {
     }
 
     if (Array.isArray(value)) {
-      for (let index = 0; index < value.length; index++) {
-        result[`${prefixedKey}.${index}`] = value[index];
-      }
+      Object.assign(result, flattenObjectImpl(value, prefixedKey));
       continue;
     }