SavedObjectsRepository code cleanup (bis) (#157363)

## Summary

Follow-up of https://github.com/elastic/kibana/pull/157154

Continue the cleanup started in the previous PR, by moving more things
around.

- Move everything search-related (dsl, aggregations, kql utils) to a
dedicated `search` folder
- Move a few more things to `/apis/internals`
- Remove the 'v5' field compatibility in the field list generation (see
comment)
- Cleanup some files a bit.

---------

Co-authored-by: kibanamachine <42973632+kibanamachine@users.noreply.github.com>

packages/core/saved-objects/core-saved-objects-api-server-internal/src/lib/apis/bulk_delete.ts

@@ -32,8 +32,8 @@ import {
   right,
 } from './utils';
 import type { ApiExecutionContext } from './types';
-import { deleteLegacyUrlAliases } from '../legacy_url_aliases';
-import {
+import { deleteLegacyUrlAliases } from './internals/delete_legacy_url_aliases';
+import type {
   BulkDeleteExpectedBulkGetResult,
   BulkDeleteItemErrorResult,
   BulkDeleteParams,
@@ -41,7 +41,7 @@ import {
   ExpectedBulkDeleteResult,
   NewBulkItemResponse,
   ObjectToDeleteAliasesFor,
-} from '../repository_bulk_delete_internal_types';
+} from './internals/repository_bulk_delete_internal_types';
 
 export interface PerformBulkDeleteParams<T = unknown> {
   objects: SavedObjectsBulkDeleteObject[];

packages/core/saved-objects/core-saved-objects-api-server-internal/src/lib/apis/bulk_get.ts

@@ -21,6 +21,7 @@ import {
   SavedObjectsBulkResponse,
   SavedObjectsGetOptions,
 } from '@kbn/core-saved-objects-api-server';
+import { includedFields } from '../utils';
 import {
   Either,
   errorContent,
@@ -32,13 +33,17 @@ import {
   rawDocExistsInNamespaces,
 } from './utils';
 import { ApiExecutionContext } from './types';
-import { includedFields } from '../included_fields';
 
 export interface PerformBulkGetParams<T = unknown> {
   objects: SavedObjectsBulkGetObject[];
   options: SavedObjectsGetOptions;
 }
 
+type ExpectedBulkGetResult = Either<
+  { type: string; id: string; error: Payload },
+  { type: string; id: string; fields?: string[]; namespaces?: string[]; esRequestIndex: number }
+>;
+
 export const performBulkGet = async <T>(
   { objects, options }: PerformBulkGetParams<T>,
   { helpers, allowedTypes, client, serializer, registry, extensions = {} }: ApiExecutionContext
@@ -75,10 +80,6 @@ export const performBulkGet = async <T>(
   };
 
   let bulkGetRequestIndexCounter = 0;
-  type ExpectedBulkGetResult = Either<
-    { type: string; id: string; error: Payload },
-    { type: string; id: string; fields?: string[]; namespaces?: string[]; esRequestIndex: number }
-  >;
   const expectedBulkGetResults = await Promise.all(
     objects.map<Promise<ExpectedBulkGetResult>>(async (object) => {
       const { type, id, fields } = object;

packages/core/saved-objects/core-saved-objects-api-server-internal/src/lib/apis/delete.ts

@@ -11,7 +11,7 @@ import { SavedObjectsErrorHelpers } from '@kbn/core-saved-objects-server';
 import { ALL_NAMESPACES_STRING } from '@kbn/core-saved-objects-utils-server';
 import { SavedObjectsDeleteOptions } from '@kbn/core-saved-objects-api-server';
 import { DEFAULT_REFRESH_SETTING } from '../constants';
-import { deleteLegacyUrlAliases } from '../legacy_url_aliases';
+import { deleteLegacyUrlAliases } from './internals/delete_legacy_url_aliases';
 import { getExpectedVersionProperties } from './utils';
 import { PreflightCheckNamespacesResult } from './helpers';
 import type { ApiExecutionContext } from './types';

packages/core/saved-objects/core-saved-objects-api-server-internal/src/lib/apis/delete_by_namespace.ts

@@ -14,8 +14,8 @@ import {
   getRootPropertiesObjects,
   LEGACY_URL_ALIAS_TYPE,
 } from '@kbn/core-saved-objects-base-server-internal';
+import { getSearchDsl } from '../search';
 import type { ApiExecutionContext } from './types';
-import { getSearchDsl } from '../search_dsl';
 
 export interface PerformDeleteByNamespaceParams<T = unknown> {
   namespace: string;

packages/core/saved-objects/core-saved-objects-api-server-internal/src/lib/apis/find.ts

@@ -28,10 +28,12 @@ import {
   SavedObjectsFindResponse,
 } from '@kbn/core-saved-objects-api-server';
 import { ApiExecutionContext } from './types';
-import { validateConvertFilterToKueryNode } from '../filter_utils';
-import { validateAndConvertAggregations } from '../aggregations';
-import { includedFields } from '../included_fields';
-import { getSearchDsl } from '../search_dsl';
+import {
+  validateConvertFilterToKueryNode,
+  getSearchDsl,
+  validateAndConvertAggregations,
+} from '../search';
+import { includedFields } from '../utils';
 
 export interface PerformFindParams {
   options: SavedObjectsFindOptions;

packages/core/saved-objects/core-saved-objects-api-server-internal/src/lib/apis/helpers/preflight_check.ts

@@ -15,7 +15,7 @@ import type {
 import { SavedObjectsUtils } from '@kbn/core-saved-objects-utils-server';
 import { SavedObjectsErrorHelpers, SavedObjectsRawDocSource } from '@kbn/core-saved-objects-server';
 import type { RepositoryEsClient } from '../../repository_es_client';
-import type { PreflightCheckForBulkDeleteParams } from '../../repository_bulk_delete_internal_types';
+import type { PreflightCheckForBulkDeleteParams } from '../internals/repository_bulk_delete_internal_types';
 import type { CreatePointInTimeFinderFn } from '../../point_in_time_finder';
 import {
   getSavedObjectNamespaces,

packages/core/saved-objects/core-saved-objects-api-server-internal/src/lib/apis/internals/collect_multi_namespace_references.test.mock.ts

@@ -6,7 +6,7 @@
  * Side Public License, v 1.
  */
 
-import type { findLegacyUrlAliases } from '../../legacy_url_aliases';
+import type { findLegacyUrlAliases } from './find_legacy_url_aliases';
 import type { findSharedOriginObjects } from '../utils/find_shared_origin_objects';
 import type * as InternalUtils from '../utils/internal_utils';
 
@@ -14,7 +14,7 @@ export const mockFindLegacyUrlAliases = jest.fn() as jest.MockedFunction<
   typeof findLegacyUrlAliases
 >;
 
-jest.mock('../../legacy_url_aliases', () => {
+jest.mock('./find_legacy_url_aliases', () => {
   return { findLegacyUrlAliases: mockFindLegacyUrlAliases };
 });
 

packages/core/saved-objects/core-saved-objects-api-server-internal/src/lib/apis/internals/collect_multi_namespace_references.ts

@@ -22,8 +22,8 @@ import {
 } from '@kbn/core-saved-objects-server';
 import { SavedObjectsUtils } from '@kbn/core-saved-objects-utils-server';
 import { getObjectKey, parseObjectKey } from '@kbn/core-saved-objects-base-server-internal';
-import { findLegacyUrlAliases } from '../../legacy_url_aliases';
-import { getRootFields } from '../../included_fields';
+import { findLegacyUrlAliases } from './find_legacy_url_aliases';
+import { getRootFields } from '../../utils';
 import type { CreatePointInTimeFinderFn } from '../../point_in_time_finder';
 import type { RepositoryEsClient } from '../../repository_es_client';
 import {
@@ -123,7 +123,9 @@ export async function collectMultiNamespaceReferences(
     return { ...obj, spacesWithMatchingAliases, spacesWithMatchingOrigins };
   });
 
-  if (!securityExtension) return { objects: results };
+  if (!securityExtension) {
+    return { objects: results };
+  }
 
   // Now that we have *all* information for the object graph, if the Security extension is enabled, we can: check/enforce authorization,
   // write audit events, filter the object graph, and redact spaces from the objects.

packages/core/saved-objects/core-saved-objects-api-server-internal/src/lib/apis/internals/delete_legacy_url_aliases.test.mock.ts

@@ -15,6 +15,10 @@ jest.mock('@kbn/core-elasticsearch-client-server-internal', () => {
 });
 
 // Mock this function to return empty results, as this simplifies test cases and we don't need to exercise alternate code paths for these
-jest.mock('../search_dsl', () => {
-  return { getSearchDsl: jest.fn() };
+jest.mock('../../search', () => {
+  const actual = jest.requireActual('../../search');
+  return {
+    ...actual,
+    getSearchDsl: jest.fn(),
+  };
 });

packages/core/saved-objects/core-saved-objects-api-server-internal/src/lib/apis/internals/delete_legacy_url_aliases.test.ts

@@ -9,7 +9,6 @@
 import { mockGetEsErrorMessage } from './delete_legacy_url_aliases.test.mock'; // Note: importing this file applies default mocks for other functions too
 
 import { errors as EsErrors } from '@elastic/elasticsearch';
-
 import { elasticsearchClientMock } from '@kbn/core-elasticsearch-client-server-mocks';
 import { ALL_NAMESPACES_STRING } from '@kbn/core-saved-objects-utils-server';
 import { typeRegistryMock } from '@kbn/core-saved-objects-base-server-mocks';

packages/core/saved-objects/core-saved-objects-api-server-internal/src/lib/apis/internals/delete_legacy_url_aliases.ts

@@ -7,7 +7,6 @@
  */
 
 import * as esKuery from '@kbn/es-query';
-
 import { getErrorMessage as getEsErrorMessage } from '@kbn/core-elasticsearch-client-server-internal';
 import type { ISavedObjectTypeRegistry } from '@kbn/core-saved-objects-server';
 import { ALL_NAMESPACES_STRING } from '@kbn/core-saved-objects-utils-server';
@@ -15,8 +14,8 @@ import {
   LEGACY_URL_ALIAS_TYPE,
   type IndexMapping,
 } from '@kbn/core-saved-objects-base-server-internal';
-import type { RepositoryEsClient } from '../repository_es_client';
-import { getSearchDsl } from '../search_dsl';
+import type { RepositoryEsClient } from '../../repository_es_client';
+import { getSearchDsl } from '../../search';
 
 /** @internal */
 export interface DeleteLegacyUrlAliasesParams {

packages/core/saved-objects/core-saved-objects-api-server-internal/src/lib/apis/internals/find_legacy_url_aliases.test.ts

@@ -7,15 +7,14 @@
  */
 
 import { DeeplyMockedKeys } from '@kbn/utility-types-jest';
-
 import {
   type LegacyUrlAlias,
   LEGACY_URL_ALIAS_TYPE,
 } from '@kbn/core-saved-objects-base-server-internal';
-import { CreatePointInTimeFinderFn, PointInTimeFinder } from '../point_in_time_finder';
-import { findLegacyUrlAliases } from './find_legacy_url_aliases';
-import { savedObjectsPointInTimeFinderMock } from '../../mocks';
 import { SavedObjectsPointInTimeFinderClient } from '@kbn/core-saved-objects-api-server';
+import { savedObjectsPointInTimeFinderMock } from '../../../mocks';
+import { CreatePointInTimeFinderFn, PointInTimeFinder } from '../../point_in_time_finder';
+import { findLegacyUrlAliases } from './find_legacy_url_aliases';
 
 describe('findLegacyUrlAliases', () => {
   let pitFinderClientMock: jest.Mocked<SavedObjectsPointInTimeFinderClient>;

packages/core/saved-objects/core-saved-objects-api-server-internal/src/lib/apis/internals/find_legacy_url_aliases.ts

@@ -12,7 +12,7 @@ import {
   LEGACY_URL_ALIAS_TYPE,
   getObjectKey,
 } from '@kbn/core-saved-objects-base-server-internal';
-import type { CreatePointInTimeFinderFn } from '../point_in_time_finder';
+import type { CreatePointInTimeFinderFn } from '../../point_in_time_finder';
 
 interface FindLegacyUrlAliasesObject {
   type: string;

packages/core/saved-objects/core-saved-objects-api-server-internal/src/lib/apis/internals/preflight_check_for_create.test.mock.ts

@@ -6,14 +6,14 @@
  * Side Public License, v 1.
  */
 
-import type { findLegacyUrlAliases } from '../../legacy_url_aliases';
+import type { findLegacyUrlAliases } from './find_legacy_url_aliases';
 import type * as InternalUtils from '../utils/internal_utils';
 
 export const mockFindLegacyUrlAliases = jest.fn() as jest.MockedFunction<
   typeof findLegacyUrlAliases
 >;
 
-jest.mock('../../legacy_url_aliases', () => {
+jest.mock('./find_legacy_url_aliases', () => {
   return { findLegacyUrlAliases: mockFindLegacyUrlAliases };
 });
 

packages/core/saved-objects/core-saved-objects-api-server-internal/src/lib/apis/internals/preflight_check_for_create.test.ts

@@ -12,7 +12,6 @@ import {
 } from './preflight_check_for_create.test.mock';
 
 import type { DeeplyMockedKeys } from '@kbn/utility-types-jest';
-
 import type { ElasticsearchClient } from '@kbn/core-elasticsearch-server';
 import { elasticsearchClientMock } from '@kbn/core-elasticsearch-client-server-mocks';
 import {

packages/core/saved-objects/core-saved-objects-api-server-internal/src/lib/apis/internals/preflight_check_for_create.ts

@@ -21,7 +21,7 @@ import {
   getObjectKey,
   type LegacyUrlAlias,
 } from '@kbn/core-saved-objects-base-server-internal';
-import { findLegacyUrlAliases } from '../../legacy_url_aliases';
+import { findLegacyUrlAliases } from './find_legacy_url_aliases';
 import type { CreatePointInTimeFinderFn } from '../../point_in_time_finder';
 import type { RepositoryEsClient } from '../../repository_es_client';
 import { left, right, isLeft, isRight, rawDocExistsInNamespaces, type Either } from '../utils';

packages/core/saved-objects/core-saved-objects-api-server-internal/src/lib/apis/internals/repository_bulk_delete_internal_types.ts

@@ -12,8 +12,8 @@ import type {
   ErrorCause,
 } from '@elastic/elasticsearch/lib/api/types';
 import type { estypes, TransportResult } from '@elastic/elasticsearch';
-import type { Either } from './apis/utils';
-import type { DeleteLegacyUrlAliasesParams } from './legacy_url_aliases';
+import type { Either } from '../utils';
+import type { DeleteLegacyUrlAliasesParams } from './delete_legacy_url_aliases';
 
 /**
  * @internal

packages/core/saved-objects/core-saved-objects-api-server-internal/src/lib/apis/internals/update_objects_spaces.test.mock.ts

@@ -7,7 +7,7 @@
  */
 
 import type * as InternalUtils from '../utils/internal_utils';
-import type { deleteLegacyUrlAliases } from '../../legacy_url_aliases';
+import type { deleteLegacyUrlAliases } from './delete_legacy_url_aliases';
 
 export const mockGetBulkOperationError = jest.fn() as jest.MockedFunction<
   typeof InternalUtils['getBulkOperationError']
@@ -32,6 +32,6 @@ jest.mock('../utils/internal_utils', () => {
 export const mockDeleteLegacyUrlAliases = jest.fn() as jest.MockedFunction<
   typeof deleteLegacyUrlAliases
 >;
-jest.mock('../../legacy_url_aliases', () => ({
+jest.mock('./delete_legacy_url_aliases', () => ({
   deleteLegacyUrlAliases: mockDeleteLegacyUrlAliases,
 }));

packages/core/saved-objects/core-saved-objects-api-server-internal/src/lib/apis/internals/update_objects_spaces.ts

@@ -44,7 +44,7 @@ import type { RepositoryEsClient } from '../../repository_es_client';
 import {
   deleteLegacyUrlAliases,
   type DeleteLegacyUrlAliasesParams,
-} from '../../legacy_url_aliases';
+} from './delete_legacy_url_aliases';
 
 /**
  * Parameters for the updateObjectsSpaces function.

packages/core/saved-objects/core-saved-objects-api-server-internal/src/lib/apis/remove_references_to.ts

@@ -12,8 +12,8 @@ import {
   SavedObjectsRemoveReferencesToOptions,
   SavedObjectsRemoveReferencesToResponse,
 } from '@kbn/core-saved-objects-api-server';
-import { ApiExecutionContext } from './types';
-import { getSearchDsl } from '../search_dsl';
+import { getSearchDsl } from '../search';
+import type { ApiExecutionContext } from './types';
 
 export interface PerformRemoveReferencesToParams {
   type: string;

packages/core/saved-objects/core-saved-objects-api-server-internal/src/lib/apis/types.ts

@@ -16,6 +16,11 @@ import type { IKibanaMigrator, IndexMapping } from '@kbn/core-saved-objects-base
 import type { RepositoryHelpers } from './helpers';
 import type { RepositoryEsClient } from '../repository_es_client';
 
+/**
+ * Context passed from the SO repository to the API execution handlers.
+ *
+ * @internal
+ */
 export interface ApiExecutionContext {
   registry: ISavedObjectTypeRegistry;
   helpers: RepositoryHelpers;

packages/core/saved-objects/core-saved-objects-api-server-internal/src/lib/index.ts

@@ -9,5 +9,4 @@
 export { SavedObjectsRepository } from './repository';
 export { SavedObjectsClientProvider } from './scoped_client_provider';
 export { PointInTimeFinder } from './point_in_time_finder';
-
 export type { ISavedObjectsClientProvider } from './scoped_client_provider';

packages/core/saved-objects/core-saved-objects-api-server-internal/src/lib/repository.encryption_extension.test.ts

@@ -47,9 +47,6 @@ import {
 } from '../test_helpers/repository.test.common';
 import { savedObjectsExtensionsMock } from '../mocks/saved_objects_extensions.mock';
 
-// BEWARE: The SavedObjectClient depends on the implementation details of the SavedObjectsRepository
-// so any breaking changes to this repository are considered breaking changes to the SavedObjectsClient.
-
 describe('SavedObjectsRepository Encryption Extension', () => {
   let client: ReturnType<typeof elasticsearchClientMock.createElasticsearchClient>;
   let repository: SavedObjectsRepository;

packages/core/saved-objects/core-saved-objects-api-server-internal/src/lib/repository.security_extension.test.ts

@@ -65,9 +65,6 @@ import {
 import { savedObjectsExtensionsMock } from '../mocks/saved_objects_extensions.mock';
 import { arrayMapsAreEqual } from '@kbn/core-saved-objects-utils-server';
 
-// BEWARE: The SavedObjectClient depends on the implementation details of the SavedObjectsRepository
-// so any breaking changes to this repository are considered breaking changes to the SavedObjectsClient.
-
 describe('SavedObjectsRepository Security Extension', () => {
   let client: ReturnType<typeof elasticsearchClientMock.createElasticsearchClient>;
   let repository: SavedObjectsRepository;

packages/core/saved-objects/core-saved-objects-api-server-internal/src/lib/repository.spaces_extension.test.ts

@@ -62,9 +62,6 @@ import {
 } from '../test_helpers/repository.test.common';
 import { savedObjectsExtensionsMock } from '../mocks/saved_objects_extensions.mock';
 
-// BEWARE: The SavedObjectClient depends on the implementation details of the SavedObjectsRepository
-// so any breaking changes to this repository are considered breaking changes to the SavedObjectsClient.
-
 const ERROR_NAMESPACE_SPECIFIED = 'Spaces currently determines the namespaces';
 
 describe('SavedObjectsRepository Spaces Extension', () => {

packages/core/saved-objects/core-saved-objects-api-server-internal/src/lib/repository.test.mock.ts

@@ -11,7 +11,7 @@ import type { internalBulkResolve } from './apis/internals/internal_bulk_resolve
 import type * as InternalUtils from './apis/utils/internal_utils';
 import type { preflightCheckForCreate } from './apis/internals/preflight_check_for_create';
 import type { updateObjectsSpaces } from './apis/internals/update_objects_spaces';
-import type { deleteLegacyUrlAliases } from './legacy_url_aliases';
+import type { deleteLegacyUrlAliases } from './apis/internals/delete_legacy_url_aliases';
 
 export const mockCollectMultiNamespaceReferences = jest.fn() as jest.MockedFunction<
   typeof collectMultiNamespaceReferences
@@ -66,9 +66,9 @@ jest.doMock('./point_in_time_finder', () => ({
 export const mockDeleteLegacyUrlAliases = jest.fn() as jest.MockedFunction<
   typeof deleteLegacyUrlAliases
 >;
-jest.mock('./legacy_url_aliases', () => ({
+jest.mock('./apis/internals/delete_legacy_url_aliases', () => ({
   deleteLegacyUrlAliases: mockDeleteLegacyUrlAliases,
 }));
 
 export const mockGetSearchDsl = jest.fn();
-jest.mock('./search_dsl/search_dsl', () => ({ getSearchDsl: mockGetSearchDsl }));
+jest.mock('./search/search_dsl', () => ({ getSearchDsl: mockGetSearchDsl }));

packages/core/saved-objects/core-saved-objects-api-server-internal/src/lib/repository.test.ts

@@ -3792,7 +3792,6 @@ describe('SavedObjectsRepository', () => {
                 'updated_at',
                 'created_at',
                 'originId',
-                'title',
               ],
             }),
           }),

packages/core/saved-objects/core-saved-objects-api-server-internal/src/lib/repository_es_client.ts

@@ -10,7 +10,7 @@ import type { TransportRequestOptions } from '@elastic/elasticsearch';
 
 import type { ElasticsearchClient } from '@kbn/core-elasticsearch-server';
 import { retryCallCluster } from '@kbn/core-elasticsearch-server-internal';
-import { decorateEsError } from './decorate_es_error';
+import { decorateEsError } from './utils';
 
 const methods = [
   'bulk',

packages/core/saved-objects/core-saved-objects-api-server-internal/src/lib/search/aggregations/validation.ts

@@ -11,6 +11,7 @@ import { ObjectType } from '@kbn/config-schema';
 import { isPlainObject, isArray } from 'lodash';
 
 import type { IndexMapping } from '@kbn/core-saved-objects-base-server-internal';
+import { getRootFields } from '../../utils';
 import {
   isObjectTypeAttribute,
   rewriteObjectTypeAttribute,
@@ -18,7 +19,6 @@ import {
   rewriteRootLevelAttribute,
 } from './validation_utils';
 import { aggregationSchemas } from './aggs_types';
-import { getRootFields } from '../included_fields';
 
 const aggregationKeys = ['aggs', 'aggregations'];
 

packages/core/saved-objects/core-saved-objects-api-server-internal/src/lib/search/aggregations/validation_utils.ts

@@ -7,7 +7,7 @@
  */
 
 import type { IndexMapping } from '@kbn/core-saved-objects-base-server-internal';
-import { fieldDefined, hasFilterKeyError } from '../filter_utils';
+import { fieldDefined, hasFilterKeyError } from '../utils/filter_utils';
 
 /**
  * Returns true if the given attribute path is a valid root level SO attribute path

packages/core/saved-objects/core-saved-objects-api-server-internal/src/lib/search/index.ts

@@ -6,7 +6,6 @@
  * Side Public License, v 1.
  */
 
-export { findLegacyUrlAliases } from './find_legacy_url_aliases';
-
-export { deleteLegacyUrlAliases } from './delete_legacy_url_aliases';
-export type { DeleteLegacyUrlAliasesParams } from './delete_legacy_url_aliases';
+export { getSearchDsl } from './search_dsl';
+export { validateAndConvertAggregations } from './aggregations';
+export { validateConvertFilterToKueryNode } from './utils';

packages/core/saved-objects/core-saved-objects-api-server-internal/src/lib/search/search_dsl/query_params.test.ts

@@ -9,9 +9,6 @@
 import { getReferencesFilterMock } from './query_params.tests.mocks';
 
 import * as esKuery from '@kbn/es-query';
-
-type KueryNode = any;
-
 import {
   ALL_NAMESPACES_STRING,
   DEFAULT_NAMESPACE_STRING,
@@ -19,6 +16,8 @@ import {
 import { SavedObjectTypeRegistry } from '@kbn/core-saved-objects-base-server-internal';
 import { getQueryParams } from './query_params';
 
+type KueryNode = any;
+
 const registerTypes = (registry: SavedObjectTypeRegistry) => {
   registry.registerType({
     name: 'pending',

packages/core/saved-objects/core-saved-objects-api-server-internal/src/lib/search/search_dsl/query_params.ts

@@ -8,9 +8,6 @@
 
 import * as esKuery from '@kbn/es-query';
 import type { SavedObjectTypeIdTuple } from '@kbn/core-saved-objects-common';
-
-type KueryNode = any;
-
 import type { ISavedObjectTypeRegistry } from '@kbn/core-saved-objects-server';
 import {
   ALL_NAMESPACES_STRING,
@@ -18,6 +15,8 @@ import {
 } from '@kbn/core-saved-objects-utils-server';
 import { getReferencesFilter } from './references_filter';
 
+type KueryNode = any;
+
 /**
  * Gets the types based on the type. Uses mappings to support
  * null type (all types), a single type string or an array

packages/core/saved-objects/core-saved-objects-api-server-internal/src/lib/search/search_dsl/references_filter.ts

@@ -7,7 +7,6 @@
  */
 
 import type { SavedObjectTypeIdTuple } from '@kbn/core-saved-objects-common';
-
 import type { SearchOperator } from './query_params';
 
 export function getReferencesFilter({

packages/core/saved-objects/core-saved-objects-api-server-internal/src/lib/search/utils/index.ts

@@ -0,0 +1,15 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0 and the Server Side Public License, v 1; you may not use this file except
+ * in compliance with, at your election, the Elastic License 2.0 or the Server
+ * Side Public License, v 1.
+ */
+
+export {
+  fieldDefined,
+  hasFilterKeyError,
+  isSavedObjectAttr,
+  validateConvertFilterToKueryNode,
+  validateFilterKueryNode,
+} from './filter_utils';

packages/core/saved-objects/core-saved-objects-api-server-internal/src/lib/utils/included_fields.test.ts

@@ -38,34 +38,26 @@ describe('includedFields', () => {
 
   it('accepts type and field as string', () => {
     const fields = includedFields('config', 'foo');
-    expect(fields).toEqual(['config.foo', ...rootFields, 'foo']);
+    expect(fields).toEqual(['config.foo', ...rootFields]);
   });
 
   it('accepts type as array and field as string', () => {
     const fields = includedFields(['config', 'secret'], 'foo');
-    expect(fields).toEqual(['config.foo', 'secret.foo', ...rootFields, 'foo']);
+    expect(fields).toEqual(['config.foo', 'secret.foo', ...rootFields]);
   });
 
   it('accepts type as string and field as array', () => {
     const fields = includedFields('config', ['foo', 'bar']);
-    expect(fields).toEqual(['config.foo', 'config.bar', ...rootFields, 'foo', 'bar']);
+    expect(fields).toEqual(['config.foo', 'config.bar', ...rootFields]);
   });
 
   it('accepts type as array and field as array', () => {
     const fields = includedFields(['config', 'secret'], ['foo', 'bar']);
-    expect(fields).toEqual([
-      'config.foo',
-      'config.bar',
-      'secret.foo',
-      'secret.bar',
-      ...rootFields,
-      'foo',
-      'bar',
-    ]);
+    expect(fields).toEqual(['config.foo', 'config.bar', 'secret.foo', 'secret.bar', ...rootFields]);
   });
 
   it('uses wildcard when type is not provided', () => {
     const fields = includedFields(undefined, 'foo');
-    expect(fields).toEqual(['*.foo', ...rootFields, 'foo']);
+    expect(fields).toEqual(['*.foo', ...rootFields]);
   });
 });

packages/core/saved-objects/core-saved-objects-api-server-internal/src/lib/utils/included_fields.ts

@@ -6,10 +6,6 @@
  * Side Public License, v 1.
  */
 
-function toArray(value: string | string[]): string[] {
-  return typeof value === 'string' ? [value] : value;
-}
-
 const ROOT_FIELDS = [
   'namespace',
   'namespaces',
@@ -39,14 +35,13 @@ export function includedFields(
     return;
   }
 
-  // convert to an array
-  const sourceFields = toArray(fields);
-  const sourceType = toArray(type);
+  const sourceFields = typeof fields === 'string' ? [fields] : fields;
+  const sourceType = typeof type === 'string' ? [type] : type;
 
   return sourceType
     .reduce((acc: string[], t) => {
-      return [...acc, ...sourceFields.map((f) => `${t}.${f}`)];
+      acc.push(...sourceFields.map((f) => `${t}.${f}`));
+      return acc;
     }, [])
-    .concat(ROOT_FIELDS)
-    .concat(fields); // v5 compatibility
+    .concat(ROOT_FIELDS);
 }

packages/core/saved-objects/core-saved-objects-api-server-internal/src/lib/utils/index.ts

@@ -0,0 +1,10 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0 and the Server Side Public License, v 1; you may not use this file except
+ * in compliance with, at your election, the Elastic License 2.0 or the Server
+ * Side Public License, v 1.
+ */
+
+export { decorateEsError } from './decorate_es_error';
+export { getRootFields, includedFields } from './included_fields';