🪟 🎉 Disable deselection of cursor field/primary key in the UI

airbyte-webapp/src/components/connection/CatalogTree/streamConfigHelpers/streamConfigHelpers.test.ts

@@ -30,6 +30,21 @@ describe(`${mergeFieldPathArrays.name}`, () => {
       { fieldPath: FIELD_THREE },
     ]);
   });
+
+  it("merges two arrays of complex fieldPaths without duplicates", () => {
+    const arr1 = [{ fieldPath: [...FIELD_ONE, ...FIELD_TWO] }, { fieldPath: [...FIELD_TWO, ...FIELD_THREE] }];
+    const arr2 = [
+      { fieldPath: [...FIELD_ONE, ...FIELD_TWO] },
+      { fieldPath: [...FIELD_TWO, ...FIELD_THREE] },
+      { fieldPath: [...FIELD_ONE, ...FIELD_THREE] },
+    ];
+
+    expect(mergeFieldPathArrays(arr1, arr2)).toEqual([
+      { fieldPath: [...FIELD_ONE, ...FIELD_TWO] },
+      { fieldPath: [...FIELD_TWO, ...FIELD_THREE] },
+      { fieldPath: [...FIELD_ONE, ...FIELD_THREE] },
+    ]);
+  });
 });
 
 describe(`${updateCursorField.name}`, () => {

airbyte-webapp/src/components/connection/CatalogTree/streamConfigHelpers/streamConfigHelpers.ts

@@ -6,17 +6,18 @@ import { AirbyteStreamConfiguration, SelectedFieldInfo } from "core/request/Airb
  * Merges arrays of SelectedFieldInfo, ensuring there are no duplicates
  */
 export function mergeFieldPathArrays(...args: SelectedFieldInfo[][]): SelectedFieldInfo[] {
-  const set = new Set<string[]>();
+  const set = new Set<string>();
 
   args.forEach((array) =>
     array.forEach((selectedFieldInfo) => {
       if (selectedFieldInfo.fieldPath) {
-        set.add(selectedFieldInfo.fieldPath);
+        const key = JSON.stringify(selectedFieldInfo.fieldPath);
+        set.add(key);
       }
     })
   );
 
-  return Array.from(set).map((fieldPath) => ({ fieldPath }));
+  return Array.from(set).map((key) => ({ fieldPath: JSON.parse(key) }));
 }
 
 /**