Chore: define base panel type in @grafana/data (#37766)

public/app/plugins/datasource/grafana/datasource.ts

@@ -8,6 +8,7 @@ import {
   DataQueryResponse,
   DataSourceApi,
   DataSourceInstanceSettings,
+  DatasourceRef,
   isValidLiveChannelAddress,
   parseLiveChannelAddress,
   StreamingFrameOptions,
@@ -17,6 +18,7 @@ import {
 import { GrafanaAnnotationQuery, GrafanaAnnotationType, GrafanaQuery, GrafanaQueryType } from './types';
 import AnnotationQueryEditor from './components/AnnotationQueryEditor';
 import { getDashboardSrv } from '../../../features/dashboard/services/DashboardSrv';
+import { isString } from 'lodash';
 
 let counter = 100;
 
@@ -37,7 +39,11 @@ export class GrafanaDatasource extends DataSourceApi<GrafanaQuery> {
         return json;
       },
       prepareQuery(anno: AnnotationQuery<GrafanaAnnotationQuery>): GrafanaQuery {
-        return { ...anno, refId: anno.name, queryType: GrafanaQueryType.Annotations };
+        let datasource: DatasourceRef | undefined | null = undefined;
+        if (isString(anno.datasource)) {
+          datasource = anno.datasource as DatasourceRef;
+        }
+        return { ...anno, refId: anno.name, queryType: GrafanaQueryType.Annotations, datasource };
       },
     };
   }

public/app/plugins/panel/graph/GraphMigrations.test.ts

@@ -1,4 +1,4 @@
-import { PanelModel, FieldConfigSource } from '@grafana/data';
+import { PanelModel, FieldConfigSource, DataQuery } from '@grafana/data';
 import { graphPanelMigrationHandler } from './GraphMigrations';
 
 describe('Graph Panel Migrations', () => {
@@ -52,7 +52,7 @@ describe('Graph Panel Migrations', () => {
       spaceLength: 10,
       stack: false,
       steppedLine: false,
-      targets: [
+      targets: ([
         {
           alias: 'Foo datacenter',
           labels: 'datacenter=foo,region=us-east-1',
@@ -71,7 +71,7 @@ describe('Graph Panel Migrations', () => {
           refId: 'C',
           scenarioId: 'random_walk',
         },
-      ],
+      ] as unknown) as DataQuery[],
       thresholds: [],
       timeFrom: null,
       timeRegions: [],