try to address #2270 by cloning the store data (#2271)

adrai · web-flow · commit c0c92e37873f · 2024-12-11T08:31:15.000+01:00
* try to address #2270 by cloning the store data * cosmetics
diff --git a/src/i18next.js b/src/i18next.js
@@ -604,7 +604,15 @@ class I18n extends EventEmitter {
       hasLoadedNamespace: clone.hasLoadedNamespace.bind(clone)
     };
     if (forkResourceStore) {
-      clone.store = new ResourceStore(this.store.data, mergedOptions);
+      // faster than const clonedData = JSON.parse(JSON.stringify(this.store.data))
+      const clonedData = Object.keys(this.store.data).reduce((prev, l) => {
+        prev[l] = { ...this.store.data[l] };
+        return Object.keys(prev[l]).reduce((acc, n) => {
+          acc[n] = { ...prev[l][n] };
+          return acc;
+        }, {});
+      }, {});
+      clone.store = new ResourceStore(clonedData, mergedOptions);
       clone.services.resourceStore = clone.store;
     }
     clone.translator = new Translator(clone.services, mergedOptions);
diff --git a/test/runtime/i18next.test.js b/test/runtime/i18next.test.js
@@ -99,14 +99,16 @@ describe('i18next', () => {
           },
         });
         newInstance = orgInstance.cloneInstance({ forkResourceStore: true, keySeparator: '__' });
+        newInstance.addResourceBundle('en', 'translation', {
+          deeper: { key: 'value here cloned' },
+        });
       });
 
       it('it not has shared instance of resource store', () => {
         expect(newInstance.store).not.to.equal(orgInstance.store);
         expect(orgInstance.t('deeper.key')).to.equal('value here');
         expect(orgInstance.t('deeper.key')).not.to.equal(newInstance.t('deeper.key'));
-        expect(newInstance.t('deeper__key')).to.equal('value here');
-        expect(orgInstance.t('deeper.key')).to.equal(newInstance.t('deeper__key'));
+        expect(newInstance.t('deeper__key')).to.equal('value here cloned');
       });
     });
   });
