fix: fix issue for null values in the alignFields util (#6152)

packages/g6/__tests__/bugs/plugin-history-align-fields.spec.ts

@@ -0,0 +1,42 @@
+import { createGraph } from '@@/utils';
+
+describe('bug: plugin-history-align-fields', () => {
+  it('fix alignFields util', async () => {
+    const graph = createGraph({
+      plugins: [{ type: 'history', key: 'history' }],
+      data: {
+        nodes: [
+          {
+            id: 'node-1',
+            type: 'rect',
+            style: { x: 50, y: 100 },
+            data: {
+              aaa: {
+                bbb: false,
+                ccc: true,
+                ddd: '1234',
+              },
+            },
+          },
+        ],
+      },
+    });
+
+    await graph.render();
+
+    expect(graph.getNodeData('node-1').style).toEqual({ x: 50, y: 100 });
+    expect(graph.getNodeData('node-1').data!.aaa).toEqual({
+      bbb: false,
+      ccc: true,
+      ddd: '1234',
+    });
+
+    await graph.translateElementBy('node-1', [100, 100]);
+    expect(graph.getNodeData('node-1').style).toEqual({ x: 150, y: 200, z: 0 });
+    expect(graph.getNodeData('node-1').data!.aaa).toEqual({
+      bbb: false,
+      ccc: true,
+      ddd: '1234',
+    });
+  });
+});

packages/g6/src/plugins/history/util.ts

@@ -18,7 +18,7 @@ export function alignFields(refObject: Record<string, any>, targetObject: Record
     if (isObject(refObject[key]) && !Array.isArray(refObject[key]) && refObject[key] !== null) {
       if (!targetObject[key]) targetObject[key] = {};
       alignFields(refObject[key], targetObject[key]);
-    } else if (!targetObject[key]) {
+    } else if (targetObject[key] === undefined) {
       targetObject[key] = inferDefaultValue(key);
     }
   }