Update @typescript-eslint to ensure compatibility with TypeScript v3.9

docs/development/plugins/kibana_utils/public/state_sync/kibana-plugin-plugins-kibana_utils-public-state_sync.isyncstateref.md

@@ -8,7 +8,7 @@
 <b>Signature:</b>
 
 ```typescript
-export interface ISyncStateRef<stateStorage extends IStateStorage = IStateStorage> 
+export interface ISyncStateRef<StateStorage extends IStateStorage = IStateStorage> 
 ```
 
 ## Properties

examples/alerting_example/public/components/create_alert.tsx

@@ -30,6 +30,7 @@ import { ALERTING_EXAMPLE_APP_ID } from '../../common/constants';
 
 export const CreateAlert = ({
   http,
+  // eslint-disable-next-line @typescript-eslint/naming-convention
   triggers_actions_ui,
   charts,
   uiSettings,

examples/alerting_example/public/plugin.tsx

@@ -46,6 +46,7 @@ export interface AlertingExamplePublicStartDeps {
 export class AlertingExamplePlugin implements Plugin<Setup, Start, AlertingExamplePublicSetupDeps> {
   public setup(
     core: CoreSetup<AlertingExamplePublicStartDeps, Start>,
+    // eslint-disable-next-line @typescript-eslint/naming-convention
     { alerts, triggers_actions_ui, developerExamples }: AlertingExamplePublicSetupDeps
   ) {
     core.application.register({

kibana.d.ts

@@ -35,7 +35,6 @@ import * as LegacyKibanaServer from './src/legacy/server/kbn_server';
 /**
  *  Re-export legacy types under a namespace.
  */
-// eslint-disable-next-line @typescript-eslint/no-namespace
 export namespace Legacy {
   export type KibanaConfig = LegacyKibanaServer.KibanaConfig;
   export type Request = LegacyKibanaServer.Request;

package.json

@@ -400,8 +400,8 @@
     "@types/vinyl": "^2.0.4",
     "@types/vinyl-fs": "^2.4.11",
     "@types/zen-observable": "^0.8.0",
-    "@typescript-eslint/eslint-plugin": "^2.34.0",
-    "@typescript-eslint/parser": "^2.34.0",
+    "@typescript-eslint/eslint-plugin": "^3.7.1",
+    "@typescript-eslint/parser": "^3.7.1",
     "angular-mocks": "^1.7.9",
     "archiver": "^3.1.1",
     "axe-core": "^3.4.1",
@@ -425,6 +425,7 @@
     "eslint-plugin-babel": "^5.3.0",
     "eslint-plugin-ban": "^1.4.0",
     "eslint-plugin-cypress": "^2.8.1",
+    "eslint-plugin-eslint-comments": "^3.2.0",
     "eslint-plugin-import": "^2.19.1",
     "eslint-plugin-jest": "^23.10.0",
     "eslint-plugin-jsx-a11y": "^6.2.3",

packages/eslint-config-kibana/package.json

@@ -11,17 +11,18 @@
   "author": "Spencer Alger <email@spalger.com>",
   "license": "Apache-2.0",
   "bugs": {
-    "url": "https://github.com/elastic/eslint-config-kibana/issues"
+    "url": "https://github.com/elastic/kibana/tree/master/packages/eslint-config-kibana"
   },
-  "homepage": "https://github.com/elastic/eslint-config-kibana#readme",
+  "homepage": "https://github.com/elastic/kibana/tree/master/packages/eslint-config-kibana",
   "peerDependencies": {
-    "@typescript-eslint/eslint-plugin": "^2.34.0",
-    "@typescript-eslint/parser": "^2.34.0",
+    "@typescript-eslint/eslint-plugin": "^3.7.1",
+    "@typescript-eslint/parser": "^3.7.1",
     "babel-eslint": "^10.0.3",
     "eslint": "^6.8.0",
     "eslint-plugin-babel": "^5.3.0",
     "eslint-plugin-ban": "^1.4.0",
     "eslint-plugin-jsx-a11y": "^6.2.3",
+    "eslint-plugin-eslint-comments": "^3.2.0",
     "eslint-plugin-import": "^2.19.1",
     "eslint-plugin-jest": "^23.10.0",
     "eslint-plugin-mocha": "^6.2.2",

packages/eslint-config-kibana/typescript.js

@@ -8,6 +8,11 @@ const PKG = require('../../package.json');
 
 const eslintConfigPrettierTypescriptEslintRules = require('eslint-config-prettier/@typescript-eslint').rules;
 
+// The current implementation excluded all the variables matching the regexp.
+// We should remove it as soon as multiple underscores are supported by the linter.
+// https://github.com/typescript-eslint/typescript-eslint/issues/1712
+// Due to the same reason we have to duplicate the "filter" option for "default" and other "selectors".
+const allowedNameRegexp = '^(UNSAFE_|_{1,3})|_{1,3}$';
 module.exports = {
   overrides: [
     {
@@ -19,6 +24,7 @@ module.exports = {
         'ban',
         'import',
         'prefer-object-spread',
+        'eslint-comments'
       ],
 
       settings: {
@@ -87,16 +93,82 @@ module.exports = {
               'React.StatelessComponent': {
                 message: 'Use FunctionComponent instead.',
                 fixWith: 'React.FunctionComponent'
-              }
+              },
+              // used in the codebase in the wild
+              '{}': false,
+              'object': false,
+              'Function': false,
             }
           }],
           'camelcase': 'off',
-          '@typescript-eslint/camelcase': ['error', {
-            'properties': 'never',
-            'ignoreDestructuring': true,
-            'allow': ['^[A-Z0-9_]+$', '^UNSAFE_']
-          }],
-          '@typescript-eslint/class-name-casing': 'error',
+          '@typescript-eslint/naming-convention': [
+            'error',
+            {
+              selector: 'default',
+              format: ['camelCase'],
+              filter: {
+                regex: allowedNameRegexp,
+                match: false
+              }
+            },
+            {
+              selector: 'variable',
+              format: [
+                'camelCase',
+                'UPPER_CASE', // const SOMETHING = ...
+                'PascalCase', // React.FunctionComponent =
+              ],
+              filter: {
+                regex: allowedNameRegexp,
+                match: false
+              }
+            },
+            {
+              selector: 'parameter',
+              format: [
+                'camelCase',
+                'PascalCase',
+              ],
+              filter: {
+                regex: allowedNameRegexp,
+                match: false
+              }
+            },
+            {
+              selector: 'memberLike',
+              format: [
+                'camelCase',
+                'PascalCase',
+                'snake_case', // keys in elasticsearch requests / responses
+                'UPPER_CASE'
+              ],
+              filter: {
+                regex: allowedNameRegexp,
+                match: false
+              }
+            },
+            {
+              selector: 'function',
+              format: [
+                'camelCase',
+                'PascalCase' // React.FunctionComponent =
+              ],
+              filter: {
+                regex: allowedNameRegexp,
+                match: false
+              }
+            },
+            {
+              selector: 'typeLike',
+              format: ['PascalCase', 'UPPER_CASE'],
+              leadingUnderscore: 'allow',
+              trailingUnderscore: 'allow',
+            },
+            {
+              selector: 'enum',
+              format: ['PascalCase', 'UPPER_CASE', 'camelCase'],
+            },
+          ],
           '@typescript-eslint/explicit-member-accessibility': ['error',
             {
               accessibility: 'off',
@@ -145,10 +217,12 @@ module.exports = {
           'no-extend-native': 'error',
           'no-eval': 'error',
           'no-new-wrappers': 'error',
+          'no-script-url': 'error',
           'no-shadow': 'error',
           'no-throw-literal': 'error',
           'no-undef-init': 'error',
           'no-unsafe-finally': 'error',
+          'no-unsanitized/property': 'error',
           'no-unused-expressions': 'error',
           'no-unused-labels': 'error',
           'no-var': 'error',
@@ -171,6 +245,9 @@ module.exports = {
 
           ],
           'import/no-default-export': 'error',
+
+          'eslint-comments/no-unused-disable': 'error',
+          'eslint-comments/no-unused-enable': 'error'
         },
         eslintConfigPrettierTypescriptEslintRules
       )

packages/kbn-plugin-helpers/src/lib/utils.ts

@@ -26,10 +26,10 @@ export function babelRegister() {
 
   try {
     // add support for moved @babel/register source: https://github.com/elastic/kibana/pull/13973
-    require(resolve(plugin.kibanaRoot, 'src/setup_node_env/babel_register')); // eslint-disable-line import/no-dynamic-require
+    require(resolve(plugin.kibanaRoot, 'src/setup_node_env/babel_register'));
   } catch (error) {
     if (error.code === 'MODULE_NOT_FOUND') {
-      require(resolve(plugin.kibanaRoot, 'src/optimize/babel/register')); // eslint-disable-line import/no-dynamic-require
+      require(resolve(plugin.kibanaRoot, 'src/optimize/babel/register'));
     } else {
       throw error;
     }

src/cli/cluster/cluster_manager.ts

@@ -354,6 +354,6 @@ export class ClusterManager {
 
   onWatcherError = (err: any) => {
     this.log.bad('failed to watch files!\n', err.stack);
-    process.exit(1); // eslint-disable-line no-process-exit
+    process.exit(1);
   };
 }

src/core/server/config/config_service.test.ts

@@ -17,8 +17,6 @@
  * under the License.
  */
 
-/* eslint-disable max-classes-per-file */
-
 import { BehaviorSubject, Observable } from 'rxjs';
 import { first, take } from 'rxjs/operators';
 

src/core/server/http/integration_tests/lifecycle_handlers.test.ts

@@ -17,10 +17,10 @@
  * under the License.
  */
 
-import { resolve } from 'path';
 import supertest from 'supertest';
 import { BehaviorSubject } from 'rxjs';
 import { ByteSizeValue } from '@kbn/config-schema';
+import pkg from '../../../../../package.json';
 
 import { createHttpServer } from '../test_utils';
 import { HttpService } from '../http_service';
@@ -30,8 +30,7 @@ import { IRouter, RouteRegistrar } from '../router';
 import { configServiceMock } from '../../config/config_service.mock';
 import { contextServiceMock } from '../../context/context_service.mock';
 
-const pkgPath = resolve(__dirname, '../../../../../package.json');
-const actualVersion = require(pkgPath).version;
+const actualVersion = pkg.version;
 const versionHeader = 'kbn-version';
 const xsrfHeader = 'kbn-xsrf';
 const nameHeader = 'kbn-name';

src/core/server/legacy/legacy_service.ts

@@ -375,6 +375,7 @@ export class LegacyService implements CoreService {
     // from being started multiple times in different processes.
     // We only want one REPL.
     if (this.coreContext.env.cliArgs.repl && process.env.kbnWorkerType === 'server') {
+      // eslint-disable-next-line @typescript-eslint/no-var-requires
       require('../../../cli/repl').startRepl(kbnServer);
     }
 

src/core/server/saved_objects/migrations/core/call_cluster.ts

@@ -25,7 +25,6 @@
 
 import { IndexMapping } from '../../mappings';
 
-/* eslint-disable  @typescript-eslint/unified-signatures */
 export interface CallCluster {
   (path: 'bulk', opts: { body: object[] }): Promise<BulkResult>;
   (path: 'count', opts: CountOpts): Promise<{ count: number; _shards: ShardsInfo }>;
@@ -49,7 +48,6 @@ export interface CallCluster {
     error?: ErrorResponse;
   }>;
 }
-/* eslint-enable  @typescript-eslint/unified-signatures */
 
 ///////////////////////////////////////////////////////////////////
 // callCluster argument type definitions

src/core/server/saved_objects/routes/integration_tests/bulk_create.test.ts

@@ -23,12 +23,12 @@ import { registerBulkCreateRoute } from '../bulk_create';
 import { savedObjectsClientMock } from '../../../../../core/server/mocks';
 import { setupServer } from '../test_utils';
 
-type setupServerReturn = UnwrapPromise<ReturnType<typeof setupServer>>;
+type SetupServerReturn = UnwrapPromise<ReturnType<typeof setupServer>>;
 
 describe('POST /api/saved_objects/_bulk_create', () => {
-  let server: setupServerReturn['server'];
-  let httpSetup: setupServerReturn['httpSetup'];
-  let handlerContext: setupServerReturn['handlerContext'];
+  let server: SetupServerReturn['server'];
+  let httpSetup: SetupServerReturn['httpSetup'];
+  let handlerContext: SetupServerReturn['handlerContext'];
   let savedObjectsClient: ReturnType<typeof savedObjectsClientMock.create>;
 
   beforeEach(async () => {

src/core/server/saved_objects/routes/integration_tests/bulk_get.test.ts

@@ -23,12 +23,12 @@ import { registerBulkGetRoute } from '../bulk_get';
 import { savedObjectsClientMock } from '../../../../../core/server/mocks';
 import { setupServer } from '../test_utils';
 
-type setupServerReturn = UnwrapPromise<ReturnType<typeof setupServer>>;
+type SetupServerReturn = UnwrapPromise<ReturnType<typeof setupServer>>;
 
 describe('POST /api/saved_objects/_bulk_get', () => {
-  let server: setupServerReturn['server'];
-  let httpSetup: setupServerReturn['httpSetup'];
-  let handlerContext: setupServerReturn['handlerContext'];
+  let server: SetupServerReturn['server'];
+  let httpSetup: SetupServerReturn['httpSetup'];
+  let handlerContext: SetupServerReturn['handlerContext'];
   let savedObjectsClient: ReturnType<typeof savedObjectsClientMock.create>;
 
   beforeEach(async () => {

src/core/server/saved_objects/routes/integration_tests/bulk_update.test.ts

@@ -23,12 +23,12 @@ import { registerBulkUpdateRoute } from '../bulk_update';
 import { savedObjectsClientMock } from '../../../../../core/server/mocks';
 import { setupServer } from '../test_utils';
 
-type setupServerReturn = UnwrapPromise<ReturnType<typeof setupServer>>;
+type SetupServerReturn = UnwrapPromise<ReturnType<typeof setupServer>>;
 
 describe('PUT /api/saved_objects/_bulk_update', () => {
-  let server: setupServerReturn['server'];
-  let httpSetup: setupServerReturn['httpSetup'];
-  let handlerContext: setupServerReturn['handlerContext'];
+  let server: SetupServerReturn['server'];
+  let httpSetup: SetupServerReturn['httpSetup'];
+  let handlerContext: SetupServerReturn['handlerContext'];
   let savedObjectsClient: ReturnType<typeof savedObjectsClientMock.create>;
 
   beforeEach(async () => {

src/core/server/saved_objects/routes/integration_tests/create.test.ts

@@ -23,12 +23,12 @@ import { registerCreateRoute } from '../create';
 import { savedObjectsClientMock } from '../../service/saved_objects_client.mock';
 import { setupServer } from '../test_utils';
 
-type setupServerReturn = UnwrapPromise<ReturnType<typeof setupServer>>;
+type SetupServerReturn = UnwrapPromise<ReturnType<typeof setupServer>>;
 
 describe('POST /api/saved_objects/{type}', () => {
-  let server: setupServerReturn['server'];
-  let httpSetup: setupServerReturn['httpSetup'];
-  let handlerContext: setupServerReturn['handlerContext'];
+  let server: SetupServerReturn['server'];
+  let httpSetup: SetupServerReturn['httpSetup'];
+  let handlerContext: SetupServerReturn['handlerContext'];
   let savedObjectsClient: ReturnType<typeof savedObjectsClientMock.create>;
 
   const clientResponse = {

src/core/server/saved_objects/routes/integration_tests/delete.test.ts

@@ -23,12 +23,12 @@ import { registerDeleteRoute } from '../delete';
 import { savedObjectsClientMock } from '../../../../../core/server/mocks';
 import { setupServer } from '../test_utils';
 
-type setupServerReturn = UnwrapPromise<ReturnType<typeof setupServer>>;
+type SetupServerReturn = UnwrapPromise<ReturnType<typeof setupServer>>;
 
 describe('DELETE /api/saved_objects/{type}/{id}', () => {
-  let server: setupServerReturn['server'];
-  let httpSetup: setupServerReturn['httpSetup'];
-  let handlerContext: setupServerReturn['handlerContext'];
+  let server: SetupServerReturn['server'];
+  let httpSetup: SetupServerReturn['httpSetup'];
+  let handlerContext: SetupServerReturn['handlerContext'];
   let savedObjectsClient: ReturnType<typeof savedObjectsClientMock.create>;
 
   beforeEach(async () => {

src/core/server/saved_objects/routes/integration_tests/export.test.ts

@@ -29,7 +29,7 @@ import { SavedObjectConfig } from '../../saved_objects_config';
 import { registerExportRoute } from '../export';
 import { setupServer, createExportableType } from '../test_utils';
 
-type setupServerReturn = UnwrapPromise<ReturnType<typeof setupServer>>;
+type SetupServerReturn = UnwrapPromise<ReturnType<typeof setupServer>>;
 const exportSavedObjectsToStream = exportMock.exportSavedObjectsToStream as jest.Mock;
 const allowedTypes = ['index-pattern', 'search'];
 const config = {
@@ -38,9 +38,9 @@ const config = {
 } as SavedObjectConfig;
 
 describe('POST /api/saved_objects/_export', () => {
-  let server: setupServerReturn['server'];
-  let httpSetup: setupServerReturn['httpSetup'];
-  let handlerContext: setupServerReturn['handlerContext'];
+  let server: SetupServerReturn['server'];
+  let httpSetup: SetupServerReturn['httpSetup'];
+  let handlerContext: SetupServerReturn['handlerContext'];
 
   beforeEach(async () => {
     ({ server, httpSetup, handlerContext } = await setupServer());