refactor: add override keyword to members implementing abstract declarations (#42512)

In combination with the TS `noImplicitOverride` compatibility changes,
we also want to follow the best-practice of adding `override` to
members which are implemented as part of abstract classes. This
commit fixes all instances which will be flagged as part of the
custom `no-implicit-override-abstract` TSLint rule.

PR Close #42512

dev-infra/caretaker/check/base.spec.ts

@@ -13,10 +13,10 @@ const exampleData = 'this is example data' as const;
 
 /** A simple usage of the BaseModule to illustrate the workings built into the abstract class. */
 class ConcreteBaseModule extends BaseModule<typeof exampleData> {
-  async retrieveData() {
+  override async retrieveData() {
     return exampleData;
   }
-  async printToTerminal() {}
+  override async printToTerminal() {}
 }
 
 describe('BaseModule', () => {

dev-infra/caretaker/check/ci.ts

@@ -25,7 +25,7 @@ type CiData = {
 }[];
 
 export class CiModule extends BaseModule<CiData> {
-  async retrieveData() {
+  override async retrieveData() {
     const gitRepoWithApi = {api: this.git.github, ...this.git.remoteConfig};
     const releaseTrains = await fetchActiveReleaseTrains(gitRepoWithApi);
 
@@ -52,7 +52,7 @@ export class CiModule extends BaseModule<CiData> {
     return await Promise.all(ciResultPromises);
   }
 
-  async printToTerminal() {
+  override async printToTerminal() {
     const data = await this.data;
     const minLabelLength = Math.max(...data.map(result => result.label.length));
     info.group(bold(`CI`));

dev-infra/caretaker/check/g3.ts

@@ -23,7 +23,7 @@ export interface G3StatsData {
 }
 
 export class G3Module extends BaseModule<G3StatsData|void> {
-  async retrieveData() {
+  override async retrieveData() {
     const toCopyToG3 = this.getG3FileIncludeAndExcludeLists();
     const latestSha = this.getLatestShas();
 
@@ -35,7 +35,7 @@ export class G3Module extends BaseModule<G3StatsData|void> {
         latestSha.g3, latestSha.master, toCopyToG3.include, toCopyToG3.exclude);
   }
 
-  async printToTerminal() {
+  override async printToTerminal() {
     const stats = await this.data;
     if (!stats) {
       return;

dev-infra/caretaker/check/github.ts

@@ -45,7 +45,7 @@ type GithubQueryResult = {
 const MAX_RETURNED_ISSUES = 20;
 
 export class GithubQueriesModule extends BaseModule<GithubQueryResults|void> {
-  async retrieveData() {
+  override async retrieveData() {
     // Non-null assertion is used here as the check for undefined immediately follows to confirm the
     // assertion.  Typescript's type filtering does not seem to work as needed to understand
     // whether githubQueries is undefined or not.
@@ -95,7 +95,7 @@ export class GithubQueriesModule extends BaseModule<GithubQueryResults|void> {
     return graphqlQuery;
   }
 
-  async printToTerminal() {
+  override async printToTerminal() {
     const queryResults = await this.data;
     if (!queryResults) {
       return;

dev-infra/caretaker/check/services.ts

@@ -45,11 +45,11 @@ export const services: ServiceConfig[] = [
 ];
 
 export class ServicesModule extends BaseModule<StatusCheckResult[]> {
-  async retrieveData() {
+  override async retrieveData() {
     return Promise.all(services.map(service => this.getStatusFromStandardApi(service)));
   }
 
-  async printToTerminal() {
+  override async printToTerminal() {
     const statuses = await this.data;
     const serviceNameMinLength = Math.max(...statuses.map(service => service.name.length));
     info.group(bold('Service Statuses'));

dev-infra/format/formatters/buildifier.ts

@@ -16,13 +16,13 @@ import {Formatter} from './base-formatter';
  * Formatter for running buildifier against bazel related files.
  */
 export class Buildifier extends Formatter {
-  name = 'buildifier';
+  override name = 'buildifier';
 
-  binaryFilePath = join(this.git.baseDir, 'node_modules/.bin/buildifier');
+  override binaryFilePath = join(this.git.baseDir, 'node_modules/.bin/buildifier');
 
-  defaultFileMatcher = ['**/*.bzl', '**/BUILD.bazel', '**/WORKSPACE', '**/BUILD'];
+  override defaultFileMatcher = ['**/*.bzl', '**/BUILD.bazel', '**/WORKSPACE', '**/BUILD'];
 
-  actions = {
+  override actions = {
     check: {
       commandFlags: `${BAZEL_WARNING_FLAG} --lint=warn --mode=check --format=json`,
       callback:

dev-infra/format/formatters/clang-format.ts

@@ -16,13 +16,13 @@ import {Formatter} from './base-formatter';
  * Formatter for running clang-format against Typescript and Javascript files
  */
 export class ClangFormat extends Formatter {
-  name = 'clang-format';
+  override name = 'clang-format';
 
-  binaryFilePath = join(this.git.baseDir, 'node_modules/.bin/clang-format');
+  override binaryFilePath = join(this.git.baseDir, 'node_modules/.bin/clang-format');
 
-  defaultFileMatcher = ['**/*.{t,j}s'];
+  override defaultFileMatcher = ['**/*.{t,j}s'];
 
-  actions = {
+  override actions = {
     check: {
       commandFlags: `--Werror -n -style=file`,
       callback:

dev-infra/format/formatters/prettier.ts

@@ -17,11 +17,11 @@ import {Formatter} from './base-formatter';
  * Formatter for running prettier against Typescript and Javascript files.
  */
 export class Prettier extends Formatter {
-  name = 'prettier';
+  override name = 'prettier';
 
-  binaryFilePath = join(this.git.baseDir, 'node_modules/.bin/prettier');
+  override binaryFilePath = join(this.git.baseDir, 'node_modules/.bin/prettier');
 
-  defaultFileMatcher = ['**/*.{t,j}s'];
+  override defaultFileMatcher = ['**/*.{t,j}s'];
 
   /**
    * The configuration path of the prettier config, obtained during construction to prevent needing
@@ -30,7 +30,7 @@ export class Prettier extends Formatter {
   private configPath =
       this.config['prettier'] ? exec(`${this.binaryFilePath} --find-config-path .`).trim() : '';
 
-  actions = {
+  override actions = {
     check: {
       commandFlags: `--config ${this.configPath} --check`,
       callback:

dev-infra/pr/merge/strategies/api-merge.ts

@@ -44,7 +44,7 @@ export class GithubApiMergeStrategy extends MergeStrategy {
     super(git);
   }
 
-  async merge(pullRequest: PullRequest): Promise<PullRequestFailure|null> {
+  override async merge(pullRequest: PullRequest): Promise<PullRequestFailure|null> {
     const {githubTargetBranch, prNumber, targetBranches, requiredBaseSha, needsCommitMessageFixup} =
         pullRequest;
     // If the pull request does not have its base branch set to any determined target

dev-infra/pr/merge/strategies/autosquash-merge.ts

@@ -31,7 +31,7 @@ export class AutosquashMergeStrategy extends MergeStrategy {
    *   specific to the pull request merge.
    * @returns A pull request failure or null in case of success.
    */
-  async merge(pullRequest: PullRequest): Promise<PullRequestFailure|null> {
+  override async merge(pullRequest: PullRequest): Promise<PullRequestFailure|null> {
     const {prNumber, targetBranches, requiredBaseSha, needsCommitMessageFixup, githubTargetBranch} =
         pullRequest;
     // In case a required base is specified for this pull request, check if the pull

dev-infra/release/publish/actions/configure-next-as-major.ts

@@ -21,13 +21,13 @@ import {packageJsonPath} from '../constants';
 export class ConfigureNextAsMajorAction extends ReleaseAction {
   private _newVersion = semver.parse(`${this.active.next.version.major + 1}.0.0-next.0`)!;
 
-  async getDescription() {
+  override async getDescription() {
     const {branchName} = this.active.next;
     const newVersion = this._newVersion;
     return `Configure the "${branchName}" branch to be released as major (v${newVersion}).`;
   }
 
-  async perform() {
+  override async perform() {
     const {branchName} = this.active.next;
     const newVersion = this._newVersion;
 

dev-infra/release/publish/actions/cut-lts-patch.ts

@@ -22,12 +22,12 @@ export class CutLongTermSupportPatchAction extends ReleaseAction {
   /** Promise resolving an object describing long-term support branches. */
   ltsBranches = fetchLongTermSupportBranchesFromNpm(this.config);
 
-  async getDescription() {
+  override async getDescription() {
     const {active} = await this.ltsBranches;
     return `Cut a new release for an active LTS branch (${active.length} active).`;
   }
 
-  async perform() {
+  override async perform() {
     const ltsBranch = await this._promptForTargetLtsBranch();
     const newVersion = semverInc(ltsBranch.version, 'patch');
     const {pullRequest: {id}, releaseNotes} =

dev-infra/release/publish/actions/cut-new-patch.ts

@@ -18,13 +18,13 @@ import {ReleaseAction} from '../actions';
 export class CutNewPatchAction extends ReleaseAction {
   private _newVersion = semverInc(this.active.latest.version, 'patch');
 
-  async getDescription() {
+  override async getDescription() {
     const {branchName} = this.active.latest;
     const newVersion = this._newVersion;
     return `Cut a new patch release for the "${branchName}" branch (v${newVersion}).`;
   }
 
-  async perform() {
+  override async perform() {
     const {branchName} = this.active.latest;
     const newVersion = this._newVersion;
 

dev-infra/release/publish/actions/cut-next-prerelease.ts

@@ -21,13 +21,13 @@ export class CutNextPrereleaseAction extends ReleaseAction {
   /** Promise resolving with the new version if a NPM next pre-release is cut. */
   private _newVersion: Promise<semver.SemVer> = this._computeNewVersion();
 
-  async getDescription() {
+  override async getDescription() {
     const {branchName} = this._getActivePrereleaseTrain();
     const newVersion = await this._newVersion;
     return `Cut a new next pre-release for the "${branchName}" branch (v${newVersion}).`;
   }
 
-  async perform() {
+  override async perform() {
     const releaseTrain = this._getActivePrereleaseTrain();
     const {branchName} = releaseTrain;
     const newVersion = await this._newVersion;

dev-infra/release/publish/actions/cut-release-candidate.ts

@@ -17,12 +17,12 @@ import {ReleaseAction} from '../actions';
 export class CutReleaseCandidateAction extends ReleaseAction {
   private _newVersion = semverInc(this.active.releaseCandidate!.version, 'prerelease', 'rc');
 
-  async getDescription() {
+  override async getDescription() {
     const newVersion = this._newVersion;
     return `Cut a first release-candidate for the feature-freeze branch (v${newVersion}).`;
   }
 
-  async perform() {
+  override async perform() {
     const {branchName} = this.active.releaseCandidate!;
     const newVersion = this._newVersion;
 

dev-infra/release/publish/actions/cut-stable.ts

@@ -20,12 +20,12 @@ import {invokeSetNpmDistCommand, invokeYarnInstallCommand} from '../external-com
 export class CutStableAction extends ReleaseAction {
   private _newVersion = this._computeNewVersion();
 
-  async getDescription() {
+  override async getDescription() {
     const newVersion = this._newVersion;
     return `Cut a stable release for the release-candidate branch (v${newVersion}).`;
   }
 
-  async perform() {
+  override async perform() {
     const {branchName} = this.active.releaseCandidate!;
     const newVersion = this._newVersion;
     const isNewMajor = this.active.releaseCandidate?.isMajor;

dev-infra/release/publish/actions/move-next-into-feature-freeze.ts

@@ -24,13 +24,13 @@ import {changelogPath, packageJsonPath} from '../constants';
 export class MoveNextIntoFeatureFreezeAction extends ReleaseAction {
   private _newVersion = computeNewPrereleaseVersionForNext(this.active, this.config);
 
-  async getDescription() {
+  override async getDescription() {
     const {branchName} = this.active.next;
     const newVersion = await this._newVersion;
     return `Move the "${branchName}" branch into feature-freeze phase (v${newVersion}).`;
   }
 
-  async perform() {
+  override async perform() {
     const newVersion = await this._newVersion;
     const newBranch = `${newVersion.major}.${newVersion.minor}.x`;
 

dev-infra/release/publish/actions/tag-recent-major-as-latest.ts

@@ -25,11 +25,11 @@ import {invokeSetNpmDistCommand, invokeYarnInstallCommand} from '../external-com
  * @see {CutStableAction#perform} for more details.
  */
 export class TagRecentMajorAsLatest extends ReleaseAction {
-  async getDescription() {
+  override async getDescription() {
     return `Tag recently published major v${this.active.latest.version} as "next" in NPM.`;
   }
 
-  async perform() {
+  override async perform() {
     await this.checkoutUpstreamBranch(this.active.latest.branchName);
     await invokeYarnInstallCommand(this.projectDir);
     await invokeSetNpmDistCommand('latest', this.active.latest.version);

dev-infra/release/publish/test/common.spec.ts

@@ -143,11 +143,11 @@ describe('common release action logic', () => {
  * release action class. This allows us to add unit tests.
  */
 class TestAction extends ReleaseAction {
-  async getDescription() {
+  override async getDescription() {
     return 'Test action';
   }
 
-  async perform() {
+  override async perform() {
     throw Error('Not implemented.');
   }