🐛 fix(api-export): Fix handling of nested object keys in API export

## Features
- Handle nested object keys by building nested objects based on key segments
- Preserve flat structure for single-segment keys that contain dots

## Bug fixes
- Fix issue where `key` variable was not properly updated in the loop

## Refactoring
- Simplify logic for handling flat vs. nested keys
- Remove unnecessary variable assignments

Author: honzabubenik

src/api/methods/api-export.ts

@@ -30,21 +30,32 @@ export class ApiExport extends ApiBase {
 
   protected static mapResult(keysList: Key[]): Json {
     return keysList.reduce((acc: Json, cur: Key): Json => {
-      const keys: string[] = [...cur.key];
+      const parts: string[] = cur.key;
 
-      let key: string | undefined = keys.shift();
-      let path: string = key || '';
-
-      while (key) {
-        if (keys.length === 0) {
-          acc[path] = cur.value;
-        } else if (!acc[path]) {
-          acc[path] = {};
+      // Flat: single-item array key stays as-is, even if it contains dots
+      if (parts.length <= 1) {
+        const only = parts[0];
+        if (only !== undefined) {
+          acc[only] = cur.value;
         }
+        return acc;
+      }
+
+      // Nested: array key → build nested objects by segments
+      let node: any = acc;
+      for (let i = 0; i < parts.length; i++) {
+        const seg = parts[i];
+        const isLast = i === parts.length - 1;
 
-        key = keys.shift();
-        if (key) {
-          path = `${path}.${key}`;
+        if (seg !== undefined) {
+          if (isLast) {
+            node[seg] = cur.value;
+          } else {
+            if (node[seg] === undefined) {
+              node[seg] = {};
+            }
+            node = node[seg];
+          }
         }
       }
 

tests/specs/export.spec.ts

@@ -23,6 +23,17 @@ describe('Export', (): void => {
     };
     const jsonExport: I18nJson = await api.export.json(request);
 
+    // simple keys remain direct properties
     expect(jsonExport.en.app_title).toBe('My Application');
+    expect(jsonExport.en.welcome_message).toBe('Welcome to My Application!');
+    expect(jsonExport.en.login_button).toBe('Log In');
+
+    // nested keys (array of segments) become nested objects
+    expect(jsonExport.en.headers.role).toBe('Project role');
+    expect(jsonExport.en.headers.email).toBe('User email');
+
+    // single-segment keys that contain dots remain flat (dot-notation key)
+    expect(jsonExport.en['table.actions.invite']).toBe('Invite user');
+    expect(jsonExport.en['table.actions.refresh']).toBe('Refresh data');
   });
 });