diff --git a/generators/angular/generator.ts b/generators/angular/generator.ts
index b20fda58f056..5299c340cd5b 100644
--- a/generators/angular/generator.ts
+++ b/generators/angular/generator.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -21,7 +20,7 @@ import { camelCase } from 'lodash-es';
 import chalk from 'chalk';
 import { isFileStateModified } from 'mem-fs-editor/state';
 
-import BaseApplicationGenerator, { type Entity } from '../base-application/index.js';
+import BaseApplicationGenerator from '../base-application/index.js';
 import { GENERATOR_ANGULAR, GENERATOR_CLIENT, GENERATOR_LANGUAGES } from '../generator-list.js';
 import { defaultLanguage } from '../languages/support/index.js';
 import { clientFrameworkTypes } from '../../jdl/jhipster/index.js';
@@ -32,9 +31,9 @@ import {
   generateTestEntityId as getTestEntityId,
   generateTestEntityPrimaryKey as getTestEntityPrimaryKey,
 } from '../client/support/index.js';
-import type { CommonClientServerApplication } from '../base-application/types.js';
 import { createNeedleCallback, mutateData } from '../base/support/index.js';
 import { writeEslintClientRootConfigFile } from '../javascript/generators/eslint/support/tasks.js';
+import type { PostWritingEntitiesTaskParam } from '../../lib/types/application/tasks.js';
 import { cleanupEntitiesFiles, postWriteEntitiesFiles, writeEntitiesFiles } from './entity-files-angular.js';
 import { writeFiles } from './files-angular.js';
 import cleanupOldFilesTask from './cleanup.js';
@@ -101,9 +100,8 @@ export default class AngularGenerator extends BaseApplicationGenerator {
       },
       addNeedles({ source, application }) {
         source.addEntitiesToClient = param => {
-          const { application, entities } = param;
-          this.addEntitiesToModule({ application, entities });
-          this.addEntitiesToMenu({ application, entities });
+          this.addEntitiesToModule(param);
+          this.addEntitiesToMenu(param);
         };
 
         source.addAdminRoute = (args: Omit<Parameters<typeof addRoute>[0], 'needle'>) =>
@@ -394,7 +392,7 @@ export default class AngularGenerator extends BaseApplicationGenerator {
     this.needleApi.clientAngular.addElementToAdminMenu(routerName, iconName, enableTranslation, translationKeyMenu, jhiPrefix);
   }
 
-  addEntitiesToMenu({ application, entities }: { application: CommonClientServerApplication; entities: Entity[] }) {
+  addEntitiesToMenu({ application, entities }: PostWritingEntitiesTaskParam) {
     const filePath = `${application.clientSrcDir}app/layouts/navbar/navbar.component.html`;
     const ignoreNonExisting = chalk.yellow('Reference to entities not added to menu.');
     const editCallback = addToEntitiesMenu({ application, entities });
@@ -402,10 +400,10 @@ export default class AngularGenerator extends BaseApplicationGenerator {
     this.editFile(filePath, { ignoreNonExisting }, editCallback);
   }
 
-  addEntitiesToModule({ application, entities }: { application: CommonClientServerApplication; entities: Entity[] }) {
-    const filePath = `${application.clientSrcDir}app/entities/entity.routes.ts`;
+  addEntitiesToModule(param: PostWritingEntitiesTaskParam) {
+    const filePath = `${param.application.clientSrcDir}app/entities/entity.routes.ts`;
     const ignoreNonExisting = chalk.yellow(`Route(s) not added to ${filePath}.`);
-    const addRouteCallback = addEntitiesRoute({ application, entities });
+    const addRouteCallback = addEntitiesRoute(param);
     this.editFile(filePath, { ignoreNonExisting }, addRouteCallback);
   }
 
diff --git a/generators/angular/support/needles.ts b/generators/angular/support/needles.ts
index b13606868186..c479e29ea9cb 100644
--- a/generators/angular/support/needles.ts
+++ b/generators/angular/support/needles.ts
@@ -21,7 +21,7 @@ import type { BaseApplication } from '../../base-application/types.js';
 import { createNeedleCallback } from '../../base/support/needles.js';
 import { upperFirstCamelCase } from '../../../lib/utils/string.js';
 import { joinCallbacks } from '../../base/support/write-files.js';
-import { asPostWritingEntitiesTask } from '../../base-application/support/task-type-inference.js';
+import type { PostWritingEntitiesTaskParam } from '../../../lib/types/application/tasks.js';
 
 export function addRoute({
   needle,
@@ -56,7 +56,7 @@ export function addRoute({
   });
 }
 
-export const addEntitiesRoute = asPostWritingEntitiesTask(function addEntitiesRoute({ application, entities }: { application; entities }) {
+export function addEntitiesRoute({ application, entities }: PostWritingEntitiesTaskParam) {
   const { enableTranslation } = application;
   return joinCallbacks(
     ...entities.map(entity => {
@@ -73,7 +73,7 @@ export const addEntitiesRoute = asPostWritingEntitiesTask(function addEntitiesRo
       });
     }),
   );
-});
+}
 
 type MenuItem = {
   jhiPrefix: string;
diff --git a/generators/angular/support/translate-angular.ts b/generators/angular/support/translate-angular.ts
index adafd666db95..46c426285f0f 100644
--- a/generators/angular/support/translate-angular.ts
+++ b/generators/angular/support/translate-angular.ts
@@ -314,7 +314,7 @@ export const createTranslationReplacer = (getWebappTranslation, opts: ReplacerOp
     );
   }
   return function replaceAngularTranslations(content, filePath) {
-    if (/\.html$/.test(filePath)) {
+    if (filePath.endsWith('.html')) {
       if (!enableTranslation) {
         content = content.replace(new RegExp(TRANSLATE_REGEX, 'g'), '');
         content = replacePlaceholders(getWebappTranslation, content);
@@ -332,7 +332,7 @@ export const createTranslationReplacer = (getWebappTranslation, opts: ReplacerOp
       if (/(:?route|module)\.ts$/.test(filePath)) {
         content = replacePageTitles(getWebappTranslation, content);
       }
-      if (/error\.route\.ts$/.test(filePath)) {
+      if (filePath.endsWith('error.route.ts')) {
         content = replaceErrorMessage(getWebappTranslation, content);
       }
     }
diff --git a/generators/app/__snapshots__/generator.spec.ts.snap b/generators/app/__snapshots__/generator.spec.ts.snap
index e70a3c66c8bc..ed64f7680b31 100644
--- a/generators/app/__snapshots__/generator.spec.ts.snap
+++ b/generators/app/__snapshots__/generator.spec.ts.snap
@@ -250,6 +250,7 @@ exports[`generator - app with default config should match snapshot 1`] = `
   "clientFramework": "angular",
   "clientFrameworkAngular": true,
   "clientFrameworkAny": true,
+  "clientFrameworkBuiltIn": true,
   "clientFrameworkNo": false,
   "clientFrameworkReact": false,
   "clientFrameworkVue": false,
@@ -867,6 +868,7 @@ exports[`generator - app with gateway should match snapshot 1`] = `
   "clientFramework": "angular",
   "clientFrameworkAngular": true,
   "clientFrameworkAny": true,
+  "clientFrameworkBuiltIn": true,
   "clientFrameworkNo": false,
   "clientFrameworkReact": false,
   "clientFrameworkVue": false,
diff --git a/generators/base-application/support/enum.ts b/generators/base-application/support/enum.ts
index f81ba061d3ec..75cfd68cfd74 100644
--- a/generators/base-application/support/enum.ts
+++ b/generators/base-application/support/enum.ts
@@ -47,7 +47,7 @@ const getEnums = (enums, customValuesState, comments) => {
     return enums.map(enumValue => ({
       name: enumValue,
       value: enumValue,
-      comment: comments && comments[enumValue] && formatDocAsJavaDoc(comments[enumValue], 4),
+      comment: comments?.[enumValue] && formatDocAsJavaDoc(comments[enumValue], 4),
     }));
   }
   return enums.map(enumValue => {
@@ -55,7 +55,7 @@ const getEnums = (enums, customValuesState, comments) => {
       return {
         name: enumValue.trim(),
         value: enumValue.trim(),
-        comment: comments && comments[enumValue] && formatDocAsJavaDoc(comments[enumValue], 4),
+        comment: comments?.[enumValue] && formatDocAsJavaDoc(comments[enumValue], 4),
       };
     }
 
@@ -63,7 +63,7 @@ const getEnums = (enums, customValuesState, comments) => {
     return {
       name: matched![1],
       value: matched![2],
-      comment: comments && comments[matched![1]] && formatDocAsJavaDoc(comments[matched![1]], 4),
+      comment: comments?.[matched![1]] && formatDocAsJavaDoc(comments[matched![1]], 4),
     };
   });
 };
diff --git a/generators/base-application/support/prepare-entity.ts b/generators/base-application/support/prepare-entity.ts
index c7c8fccd8728..f690005071c0 100644
--- a/generators/base-application/support/prepare-entity.ts
+++ b/generators/base-application/support/prepare-entity.ts
@@ -275,9 +275,9 @@ export default function prepareEntity(entityWithConfig, generator, application)
 
 export function derivedPrimaryKeyProperties(primaryKey) {
   mutateData(primaryKey, {
-    hasUUID: primaryKey.fields && primaryKey.fields.some(field => field.fieldType === UUID),
-    hasLong: primaryKey.fields && primaryKey.fields.some(field => field.fieldType === LONG),
-    hasInteger: primaryKey.fields && primaryKey.fields.some(field => field.fieldType === INTEGER),
+    hasUUID: primaryKey.fields?.some(field => field.fieldType === UUID),
+    hasLong: primaryKey.fields?.some(field => field.fieldType === LONG),
+    hasInteger: primaryKey.fields?.some(field => field.fieldType === INTEGER),
     typeUUID: primaryKey.type === UUID,
     typeString: primaryKey.type === STRING,
     typeLong: primaryKey.type === LONG,
@@ -604,7 +604,7 @@ function preparePostEntityCommonDerivedPropertiesNotTyped(entity: any) {
     entity.relationships.some(relationship => !relationship.id && relationship.persistableRelationship);
 
   entity.allReferences
-    .filter(reference => reference.relationship && reference.relationship.relatedField)
+    .filter(reference => reference.relationship?.relatedField)
     .forEach(reference => {
       reference.relatedReference = reference.relationship.relatedField.reference;
     });
diff --git a/generators/base-application/support/prepare-field.ts b/generators/base-application/support/prepare-field.ts
index f8c49b33be35..09ac74bc1bc3 100644
--- a/generators/base-application/support/prepare-field.ts
+++ b/generators/base-application/support/prepare-field.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -22,6 +21,7 @@ import { fieldTypes, validations } from '../../../jdl/jhipster/index.js';
 import { getTypescriptType, prepareField as prepareClientFieldForTemplates } from '../../client/support/index.js';
 import { prepareField as prepareServerFieldForTemplates } from '../../server/support/index.js';
 import { mutateData } from '../../../lib/utils/object.js';
+import type CoreGenerator from '../../base-core/generator.js';
 import { fieldIsEnum } from './field-utils.js';
 import { prepareProperty } from './prepare-property.js';
 
@@ -104,7 +104,7 @@ const fakeStringTemplateForFieldName = columnName => {
  * @param {string} type csv, cypress, json-serializable, ts
  * @returns fake value
  */
-function generateFakeDataForField(field, faker, changelogDate, type = 'csv') {
+function generateFakeDataForField(this: CoreGenerator, field, faker, changelogDate, type = 'csv') {
   let data;
   if (field.fakerTemplate) {
     data = faker.faker(field.fakerTemplate);
@@ -264,7 +264,7 @@ export default function prepareField(entityWithConfig, field, generator) {
     prepareServerFieldForTemplates(entityWithConfig, field, generator);
   }
 
-  prepareClientFieldForTemplates(entityWithConfig, field, generator);
+  prepareClientFieldForTemplates(entityWithConfig, field);
   return field;
 }
 
@@ -371,8 +371,8 @@ export function getEnumValuesWithCustomValues(enumValues) {
     }
     const matched = /\s*(.+?)\s*\((.+?)\)/.exec(enumValue);
     return {
-      name: matched[1],
-      value: matched[2],
+      name: matched![1],
+      value: matched![2],
     };
   });
 }
diff --git a/generators/base-application/support/prepare-relationship.ts b/generators/base-application/support/prepare-relationship.ts
index 4ca7e03d8db1..ee260b29591e 100644
--- a/generators/base-application/support/prepare-relationship.ts
+++ b/generators/base-application/support/prepare-relationship.ts
@@ -1,3 +1,4 @@
+// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -22,8 +23,11 @@ import pluralize from 'pluralize';
 import { checkAndReturnRelationshipOnValue, databaseTypes, entityOptions, validations } from '../../../jdl/jhipster/index.js';
 import { getJoinTableName, hibernateSnakeCase } from '../../server/support/index.js';
 import { mutateData } from '../../../lib/utils/object.js';
-import { stringifyApplicationData } from './debug.js';
+import type CoreGenerator from '../../base-core/generator.js';
+import type { Relationship } from '../../../lib/types/application/relationship.js';
+import type { Entity } from '../../../lib/types/application/entity.js';
 import { prepareProperty } from './prepare-property.js';
+import { stringifyApplicationData } from './debug.js';
 
 const { NEO4J, NO: DATABASE_NO } = databaseTypes;
 const { MapperTypes } = entityOptions;
@@ -33,12 +37,17 @@ const {
 
 const { MAPSTRUCT } = MapperTypes;
 
-function _defineOnUpdateAndOnDelete(relationship, generator) {
+function _defineOnUpdateAndOnDelete(relationship: Relationship, generator: CoreGenerator) {
   relationship.onDelete = checkAndReturnRelationshipOnValue(relationship.options?.onDelete, generator);
   relationship.onUpdate = checkAndReturnRelationshipOnValue(relationship.options?.onUpdate, generator);
 }
 
-export default function prepareRelationship(entityWithConfig, relationship, generator, ignoreMissingRequiredRelationship) {
+export default function prepareRelationship(
+  entityWithConfig: Entity,
+  relationship: Relationship<Entity>,
+  generator: CoreGenerator,
+  ignoreMissingRequiredRelationship = false,
+) {
   const entityName = entityWithConfig.name;
   const { otherEntityName, relationshipSide, relationshipType, relationshipName } = relationship;
 
@@ -228,7 +237,7 @@ export default function prepareRelationship(entityWithConfig, relationship, gene
     relationship.otherEntityPath = relationship.otherEntityFolderName;
   }
 
-  if (relationship.relationshipValidateRules && relationship.relationshipValidateRules.includes(REQUIRED)) {
+  if (relationship.relationshipValidateRules?.includes(REQUIRED)) {
     if (entityName.toLowerCase() === relationship.otherEntityName.toLowerCase()) {
       generator.log.warn(`Error at entity ${entityName}: required relationships to the same entity are not supported.`);
     } else {
diff --git a/generators/base-application/support/relationship.ts b/generators/base-application/support/relationship.ts
index cabf50ee82ac..ee2a465b48c7 100644
--- a/generators/base-application/support/relationship.ts
+++ b/generators/base-application/support/relationship.ts
@@ -76,7 +76,7 @@ export const loadEntitiesOtherSide = (entities: JSONEntity[], { application }: {
           if (!application || application.authenticationTypeOauth2) {
             errors.push("oauth2 applications with database and '--sync-user-with-idp' option");
           }
-          if (!application || !application.authenticationTypeOauth2) {
+          if (!application?.authenticationTypeOauth2) {
             errors.push('jwt and session authentication types in monolith or gateway applications with database');
           }
           throw new Error(`Error at entity ${entity.name}: relationships with built-in User entity is supported in ${errors}.`);
diff --git a/generators/base-core/generator.ts b/generators/base-core/generator.ts
index e87080fc83a2..747fe1241ab4 100644
--- a/generators/base-core/generator.ts
+++ b/generators/base-core/generator.ts
@@ -67,6 +67,7 @@ import { dockerPlaceholderGenerator } from '../docker/utils.js';
 import { getConfigWithDefaults } from '../../jdl/jhipster/index.js';
 import { extractArgumentsFromConfigs } from '../../lib/command/index.js';
 import type { Entity } from '../../lib/types/base/entity.js';
+import type BaseApplicationGenerator from '../base-application/generator.js';
 
 const {
   INITIALIZING,
@@ -696,8 +697,9 @@ You can ignore this error by passing '--skip-checks' to jhipster command.`);
    * Compose with a jhipster generator using default jhipster config.
    * @return {object} the composed generator
    */
-  async composeWithJHipster(generator: string, options?: ComposeOptions) {
-    assert(typeof generator === 'string', 'generator should to be a string');
+  async composeWithJHipster<const G extends string>(gen: G, options?: ComposeOptions<BaseApplicationGenerator>) {
+    assert(typeof gen === 'string', 'generator should to be a string');
+    let generator: string = gen;
     if (!isAbsolute(generator)) {
       const namespace = generator.includes(':') ? generator : `jhipster:${generator}`;
       if (await this.env.get(namespace)) {
@@ -729,7 +731,7 @@ You can ignore this error by passing '--skip-checks' to jhipster command.`);
   /**
    * Compose with a jhipster generator using default jhipster config, but queue it immediately.
    */
-  async dependsOnJHipster(generator: string, options?: ComposeOptions) {
+  async dependsOnJHipster(generator: string, options?: ComposeOptions<BaseApplicationGenerator>) {
     return this.composeWithJHipster(generator, {
       ...options,
       schedule: false,
@@ -972,7 +974,7 @@ templates: ${JSON.stringify(existingTemplates, null, 2)}`;
       } catch (error) {
         throw new Error(`Error rendering template ${sourceFileFrom} to ${targetFile}: ${error}`, { cause: error });
       }
-      if (!isBinary && transform && transform.length) {
+      if (!isBinary && transform?.length) {
         this.editFile(targetFile, ...transform);
       }
       return targetFile;
diff --git a/generators/base-workspaces/internal/docker-prompts.ts b/generators/base-workspaces/internal/docker-prompts.ts
index 34f68a649625..15d06e572458 100644
--- a/generators/base-workspaces/internal/docker-prompts.ts
+++ b/generators/base-workspaces/internal/docker-prompts.ts
@@ -389,7 +389,7 @@ export function getAppFolders(directory, deploymentApplicationType) {
                 deploymentApplicationType === (fileData['generator-jhipster'].applicationType ?? MONOLITH) ||
                 (deploymentApplicationType === MICROSERVICE && fileData['generator-jhipster'].applicationType === GATEWAY))
             ) {
-              appsFolders.push(file.match(/([^/]*)\/*$/)[1]);
+              appsFolders.push(/([^/]*)\/*$/.exec(file)[1]);
             }
           } catch (err) {
             this.log.error(chalk.red(`${yoRcFile}: this .yo-rc.json can't be read`));
diff --git a/generators/base/api.d.ts b/generators/base/api.d.ts
index 722bab16974e..3c96024d0390 100644
--- a/generators/base/api.d.ts
+++ b/generators/base/api.d.ts
@@ -14,7 +14,9 @@ export type ApplicationWithConfig = {
 export type JHipsterGeneratorOptions = BaseOptions & {
   /* cli options */
   commandName: string;
+  programName: string;
   positionalArguments?: unknown[];
+  createEnvBuilder?: any;
 
   /* yeoman options */
   skipYoResolve?: boolean;
@@ -22,6 +24,7 @@ export type JHipsterGeneratorOptions = BaseOptions & {
   force?: boolean;
 
   /* base options */
+  defaults?: boolean;
   applicationId?: string;
   applicationWithConfig?: ApplicationWithConfig;
   /**
@@ -191,7 +194,7 @@ export type WriteFileOptions<DataType = ApplicationType<Entity>, Generator = Cor
     }
   | {
       /** templates to be written */
-      templates: WriteFileTemplate<DataType, Generator>;
+      templates: WriteFileTemplate<DataType, Generator>[];
     }
   | {
       /** blocks to be written */
diff --git a/generators/base/generator.ts b/generators/base/generator.ts
index fb39488e2c4c..9f78ccff428c 100644
--- a/generators/base/generator.ts
+++ b/generators/base/generator.ts
@@ -454,7 +454,7 @@ export default class JHipsterBaseBlueprintGenerator<TaskTypes extends BaseTaskTy
   protected async composeWithBlueprints(subGen?: string, options?: ComposeOptions) {
     if (subGen === undefined) {
       const { namespace } = this.options;
-      if (!namespace || !namespace.startsWith('jhipster:')) {
+      if (!namespace?.startsWith('jhipster:')) {
         throw new Error(`Generator is not blueprintable ${namespace}`);
       }
       subGen = namespace.substring('jhipster:'.length);
@@ -653,7 +653,7 @@ export default class JHipsterBaseBlueprintGenerator<TaskTypes extends BaseTaskTy
    */
   private _findBlueprintVersion(blueprintPkgName) {
     const blueprintPackageJson = this._findBlueprintPackageJson(blueprintPkgName);
-    if (!blueprintPackageJson || !blueprintPackageJson.version) {
+    if (!blueprintPackageJson?.version) {
       this.log.warn(`Could not retrieve version of blueprint '${blueprintPkgName}'`);
       return undefined;
     }
diff --git a/generators/base/internal/blueprint.ts b/generators/base/internal/blueprint.ts
index 907f8123462c..e46f011c7d80 100644
--- a/generators/base/internal/blueprint.ts
+++ b/generators/base/internal/blueprint.ts
@@ -26,7 +26,7 @@ import { requireNamespace } from '@yeoman/namespace';
  */
 export function loadBlueprintsFromConfiguration(config) {
   // handle both config based on yeoman's Storage object, and direct configuration loaded from .yo-rc.json
-  const configuration = config && config.getAll && typeof config.getAll === 'function' ? config.getAll() || {} : config;
+  const configuration = config?.getAll && typeof config.getAll === 'function' ? config.getAll() || {} : config;
   // load blueprints from config file
   const blueprints = configuration.blueprints || [];
 
@@ -134,7 +134,7 @@ export function normalizeBlueprintName(blueprint) {
     return ns.with({ unscoped: `generator-jhipster-${ns.unscoped}` }).toString();
     // eslint-disable-next-line no-empty
   } catch {}
-  if (blueprint && blueprint.startsWith('@')) {
+  if (blueprint?.startsWith('@')) {
     return blueprint;
   }
   if (blueprint && !blueprint.startsWith('generator-jhipster')) {
diff --git a/generators/base/support/basename.ts b/generators/base/support/basename.ts
index f738f38ecea4..d265edd0b6be 100644
--- a/generators/base/support/basename.ts
+++ b/generators/base/support/basename.ts
@@ -5,7 +5,7 @@ import { camelCase } from 'lodash-es';
  */
 export const getFrontendAppName = ({ baseName }: { baseName: string }) => {
   const name = camelCase(baseName) + (baseName.endsWith('App') ? '' : 'App');
-  return name.match(/^\d/) ? 'App' : name;
+  return /^\d/.exec(name) ? 'App' : name;
 };
 
 export const getMicroserviceAppName = ({ microserviceName }: { microserviceName: string }) => {
diff --git a/generators/base/support/jhipster7-context.ts b/generators/base/support/jhipster7-context.ts
index ad6c34e18b7a..48b720acd4cd 100644
--- a/generators/base/support/jhipster7-context.ts
+++ b/generators/base/support/jhipster7-context.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /* eslint-disable no-console */
 import chalk from 'chalk';
 import { camelCase } from 'lodash-es';
@@ -236,6 +235,7 @@ export const jhipster7deprecatedProperties = {
     get:
       () =>
       (...args) =>
+        // @ts-expect-error
         getJoinTableName(...args).value,
   },
   getJavaValueGeneratorForType: {
@@ -359,7 +359,7 @@ const getPropertBuilder =
     return undefined;
   };
 
-const createHandler = ({ log } = {}) => {
+const createHandler = ({ log }: { log: (msg: string) => void } = { log: msg => console.log(msg) }) => {
   const getProperty = getPropertBuilder({ log });
   return {
     ...Object.fromEntries(
@@ -404,6 +404,6 @@ const createHandler = ({ log } = {}) => {
   };
 };
 
-export function createJHipster7Context(generator, data, options) {
+export function createJHipster7Context(generator, data, options: { log: (msg: string) => void }) {
   return new Proxy({ generator, data }, createHandler(options));
 }
diff --git a/generators/base/support/write-files.ts b/generators/base/support/write-files.ts
index b91da3b6a7a2..f1ba9e41c6c0 100644
--- a/generators/base/support/write-files.ts
+++ b/generators/base/support/write-files.ts
@@ -30,7 +30,7 @@ const isWin32 = platform() === 'win32';
 
 export function joinCallbacks<Generator>(...callbacks: EditFileCallback<Generator>[]): EditFileCallback<Generator> {
   return function (this: Generator, content: string, filePath: string) {
-    if (isWin32 && content.match(/\r\n/)) {
+    if (isWin32 && /\r\n/.exec(content)) {
       const removeSlashRSlashN: EditFileCallback<Generator> = ct => normalizeLineEndings(ct, '\n');
       const addSlashRSlashN: EditFileCallback<Generator> = ct => normalizeLineEndings(ct, '\r\n');
       callbacks = [removeSlashRSlashN, ...callbacks, addSlashRSlashN];
diff --git a/generators/base/types.d.ts b/generators/base/types.d.ts
index 2cbeb3b5e531..1e7bded2b3e1 100644
--- a/generators/base/types.d.ts
+++ b/generators/base/types.d.ts
@@ -24,4 +24,5 @@ export type Control = BaseApplicationControlProperties & {
    * cleanupFiles({ '6.0.0': ['file1', 'file2', [application.shouldRemove, 'file3']] })
    */
   cleanupFiles: (cleanup: Record<string, (string | [boolean, ...string[]])[]>) => Promise<void>;
+  getWebappTranslation?: (s: string, data?: Record<string, any>) => string;
 };
diff --git a/generators/bootstrap-application-base/generator.ts b/generators/bootstrap-application-base/generator.ts
index ec4e1a6d11d5..c32c95ff2406 100644
--- a/generators/bootstrap-application-base/generator.ts
+++ b/generators/bootstrap-application-base/generator.ts
@@ -221,7 +221,7 @@ export default class BootstrapApplicationBase extends BaseApplicationGenerator {
 
       configureRelationships({ entityName, entityStorage, entityConfig }) {
         // Validate entity json relationship content
-        entityConfig.relationships.forEach((relationship: any) => {
+        entityConfig.relationships!.forEach(relationship => {
           const { otherEntityName, relationshipType } = relationship;
 
           assert(
diff --git a/generators/bootstrap-application-base/utils.ts b/generators/bootstrap-application-base/utils.ts
index 1c4c560b3a5d..35b428923650 100644
--- a/generators/bootstrap-application-base/utils.ts
+++ b/generators/bootstrap-application-base/utils.ts
@@ -23,6 +23,7 @@ import { loadRequiredConfigIntoEntity } from '../base-application/support/index.
 import { PaginationTypes } from '../../jdl/jhipster/entity-options.js';
 import { LOGIN_REGEX, LOGIN_REGEX_JS } from '../generator-constants.js';
 import { getDatabaseTypeData } from '../server/support/database.js';
+import type BaseApplicationGenerator from '../base-application/generator.js';
 
 const { CASSANDRA } = databaseTypes;
 const { OAUTH2 } = authenticationTypes;
@@ -71,13 +72,13 @@ export const auditableEntityFields = () => [
 
 const authorityEntityName = 'Authority';
 
-export function createUserEntity(customUserData = {}, application) {
+export function createUserEntity(this: BaseApplicationGenerator, customUserData = {}, application) {
   const userEntityDefinition = this.getEntityConfig('User')?.getAll();
   if (userEntityDefinition) {
     if (userEntityDefinition.relationships && userEntityDefinition.relationships.length > 0) {
       this.log.warn('Relationships on the User entity side will be disregarded');
     }
-    if (userEntityDefinition.fields && userEntityDefinition.fields.some(field => field.fieldName !== 'id')) {
+    if (userEntityDefinition.fields?.some(field => field.fieldName !== 'id')) {
       this.log.warn('Fields on the User entity side (other than id) will be disregarded');
     }
   }
@@ -191,7 +192,7 @@ export function createUserEntity(customUserData = {}, application) {
   return user;
 }
 
-export function createUserManagementEntity(customUserManagementData = {}, application) {
+export function createUserManagementEntity(this: BaseApplicationGenerator, customUserManagementData = {}, application) {
   const user = createUserEntity.call(this, {}, application);
   for (const field of user.fields) {
     // Login is used as the id field in rest api.
@@ -236,13 +237,13 @@ export function createUserManagementEntity(customUserManagementData = {}, applic
   return userManagement;
 }
 
-export function createAuthorityEntity(customAuthorityData = {}, application) {
+export function createAuthorityEntity(this: BaseApplicationGenerator, customAuthorityData = {}, application) {
   const entityDefinition = this.getEntityConfig(authorityEntityName)?.getAll();
   if (entityDefinition) {
     if (entityDefinition.relationships && entityDefinition.relationships.length > 0) {
       this.log.warn(`Relationships on the ${authorityEntityName} entity side will be disregarded`);
     }
-    if (entityDefinition.fields && entityDefinition.fields.some(field => field.fieldName !== 'name')) {
+    if (entityDefinition.fields?.some(field => field.fieldName !== 'name')) {
       this.log.warn(`Fields on the ${authorityEntityName} entity side (other than name) will be disregarded`);
     }
   }
diff --git a/generators/bootstrap/support/multi-step-transform/index.ts b/generators/bootstrap/support/multi-step-transform/index.ts
index 17e73c91f41c..830d77710b0b 100644
--- a/generators/bootstrap/support/multi-step-transform/index.ts
+++ b/generators/bootstrap/support/multi-step-transform/index.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
diff --git a/generators/bootstrap/support/multi-step-transform/template-data.ts b/generators/bootstrap/support/multi-step-transform/template-data.ts
index bbdc2b4b3014..1d0cc78764d6 100644
--- a/generators/bootstrap/support/multi-step-transform/template-data.ts
+++ b/generators/bootstrap/support/multi-step-transform/template-data.ts
@@ -1,5 +1,10 @@
-// @ts-nocheck
 export default class TemplateData {
+  private _templateFile: any;
+  private _defaultData: { fragment?: any; section?: string };
+  private _sections: any;
+  private _defaultFragment: any;
+  private last: any;
+
   constructor(templateFile, defaultData = {}) {
     this._templateFile = templateFile;
     this._defaultData = defaultData;
@@ -32,7 +37,7 @@ export default class TemplateData {
   /**
    * Render fragments using default join and suffix.
    */
-  render(fragmentData = {}, suffix = '\n') {
+  render(fragmentData: { join?: string; section?: string } = {}, suffix = '\n') {
     const { join = '\n' } = fragmentData;
     const renderedFragments = this.renderFragments(fragmentData).filter(fragment => fragment);
     const section = fragmentData.section || this._defaultData.section;
@@ -50,7 +55,7 @@ export default class TemplateData {
   /**
    * Proxy to renderFragments for templates.
    */
-  renderFragments(fragmentData = {}) {
+  renderFragments(fragmentData: { fragment?: any; section?: string } = {}) {
     const fragment = { ...this._defaultData.fragment, ...fragmentData.fragment };
     if (this._defaultData.section && fragmentData.section) {
       // Disable section passed by the parent.
diff --git a/generators/bootstrap/support/multi-step-transform/template-file-fs.ts b/generators/bootstrap/support/multi-step-transform/template-file-fs.ts
index 9bf4515883e4..fff7f22b5e17 100644
--- a/generators/bootstrap/support/multi-step-transform/template-file-fs.ts
+++ b/generators/bootstrap/support/multi-step-transform/template-file-fs.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -56,7 +55,7 @@ export default class TemplateFileFs {
     if (templateFile.rootTemplate) {
       templateFile.file = file;
     } else {
-      this.get(templateFile.parentPath).addFragment(templateFile);
+      this.get(templateFile.parentPath!).addFragment(templateFile);
     }
     return templateFile;
   }
diff --git a/generators/bootstrap/support/multi-step-transform/template-file.ts b/generators/bootstrap/support/multi-step-transform/template-file.ts
index bcb1afcbe320..d12964cf0c46 100644
--- a/generators/bootstrap/support/multi-step-transform/template-file.ts
+++ b/generators/bootstrap/support/multi-step-transform/template-file.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 import assert from 'assert';
 import path from 'path';
 import debugBuilder from 'debug';
@@ -8,6 +7,19 @@ import TemplateData from './template-data.js';
 
 export default class TemplateFile {
   file;
+  rootTemplate: boolean;
+  basePath?: string;
+  parentPath?: string;
+  filePath?: string;
+
+  private depth: number;
+  private _filename: any;
+  private _extension: any;
+  private _compiled: ejs.TemplateFunction;
+  // eslint-disable-next-line no-use-before-define
+  private _fragments: TemplateFile[];
+  private _fragmentName: string;
+  private _debug: { enabled: boolean } & ((msg: string) => void);
 
   constructor(filename, extension) {
     this._filename = filename;
@@ -44,7 +56,7 @@ export default class TemplateFile {
     }
 
     try {
-      this._compiled = ejs.compile(contents, options);
+      this._compiled = ejs.compile(contents, { ...options, async: false }) as unknown as ejs.TemplateFunction;
     } catch (error) {
       throw new Error(`Error compiling ${this._filename}, with contents:\n${contents}`, { cause: error });
     }
@@ -60,7 +72,7 @@ export default class TemplateFile {
     return this._fragments.map(templateFile => templateFile.render(data));
   }
 
-  render(data = {}) {
+  render(data: any = {}) {
     const fragments = new TemplateData(this, data);
     try {
       const rendered = this._compiled({
diff --git a/generators/client/entity-files.ts b/generators/client/entity-files.ts
index 2c4e4aee6ee7..2c414dba2005 100644
--- a/generators/client/entity-files.ts
+++ b/generators/client/entity-files.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -19,8 +18,9 @@
  */
 import { CLIENT_MAIN_SRC_DIR } from '../generator-constants.js';
 import { getEnumInfo } from '../base-application/support/index.js';
+import type CoreGenerator from '../base-core/generator.js';
 
-export async function addEnumerationFiles({ application, entity }) {
+export async function addEnumerationFiles(this: CoreGenerator, { application, entity }) {
   for (const field of entity.fields) {
     if (field.fieldIsEnum === true) {
       const { enumFileName } = field;
diff --git a/generators/client/files-common.ts b/generators/client/files-common.ts
index 4fbf9c833ac9..5f975616225d 100644
--- a/generators/client/files-common.ts
+++ b/generators/client/files-common.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -17,11 +16,9 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-import { clientFrameworkTypes } from '../../jdl/jhipster/index.js';
+import { asWritingTask } from '../base-application/support/task-type-inference.js';
 import { clientRootTemplatesBlock, clientSrcTemplatesBlock } from './support/files.js';
 
-const { ANGULAR, REACT, VUE } = clientFrameworkTypes;
-
 export const files = {
   common: [
     {
@@ -78,8 +75,8 @@ export const files = {
   ],
 };
 
-export async function writeFiles({ application }) {
-  if (![ANGULAR, REACT, VUE].includes(application.clientFramework)) {
+export const writeFiles = asWritingTask(async function writeFiles({ application }) {
+  if (!application.clientFrameworkBuiltIn) {
     return;
   }
 
@@ -87,4 +84,4 @@ export async function writeFiles({ application }) {
     sections: files,
     context: application,
   });
-}
+});
diff --git a/generators/client/generator.ts b/generators/client/generator.ts
index 4186d0b08f6f..31986e71a51d 100644
--- a/generators/client/generator.ts
+++ b/generators/client/generator.ts
@@ -154,10 +154,11 @@ export default class JHipsterClientGenerator extends BaseApplicationGenerator {
 
       prepareForTemplates({ application }) {
         application.webappLoginRegExp = LOGIN_REGEX_JS;
+        application.clientFrameworkBuiltIn = [ANGULAR, VUE, REACT].includes(application.clientFramework);
       },
 
       addExternalResource({ application, source }) {
-        if (![ANGULAR, VUE, REACT].includes(application.clientFramework)) {
+        if (!application.clientFrameworkBuiltIn) {
           return;
         }
         source.addExternalResourceToRoot = ({ resource, comment }) =>
@@ -207,7 +208,7 @@ export default class JHipsterClientGenerator extends BaseApplicationGenerator {
   get writingEntities() {
     return this.asWritingEntitiesTaskGroup({
       async writeEnumerationFiles({ control, application, entities }) {
-        if (!application.webappEnumerationsDir || ![ANGULAR, VUE, REACT].includes(application.clientFramework)) {
+        if (!application.webappEnumerationsDir || !application.clientFrameworkBuiltIn) {
           return;
         }
         for (const entity of (control.filterEntitiesAndPropertiesForClient ?? (entities => entities))(entities)) {
@@ -224,7 +225,7 @@ export default class JHipsterClientGenerator extends BaseApplicationGenerator {
   get postWriting() {
     return this.asPostWritingTaskGroup({
       packageJsonScripts({ application }) {
-        if (![ANGULAR, VUE, REACT].includes(application.clientFramework)) {
+        if (!application.clientFrameworkBuiltIn) {
           return;
         }
         const packageJsonStorage = this.createStorage(this.destinationPath(application.clientRootDir, 'package.json'));
@@ -243,7 +244,7 @@ export default class JHipsterClientGenerator extends BaseApplicationGenerator {
       },
 
       microfrontend({ application, source }) {
-        if (!application.microfrontend || ![ANGULAR, VUE, REACT].includes(application.clientFramework)) {
+        if (!application.microfrontend || !application.clientFrameworkBuiltIn) {
           return;
         }
         if (application.clientFrameworkAngular) {
diff --git a/generators/client/prompts.ts b/generators/client/prompts.ts
index fba2f3f69155..0438d5bf65d3 100644
--- a/generators/client/prompts.ts
+++ b/generators/client/prompts.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -17,9 +16,12 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+import { asPromptingTask } from '../base-application/support/task-type-inference.js';
 import { httpsGet } from '../base/support/index.js';
 
-export async function askForClientTheme({ control }) {
+type Choice = { value: string; name: string };
+
+export const askForClientTheme = asPromptingTask(async function askForClientTheme({ control }) {
   if (control.existingProject && !this.options.askAnswered) return;
 
   const config = this.jhipsterConfigWithDefaults;
@@ -30,7 +32,7 @@ export async function askForClientTheme({ control }) {
       when: () => ['angular', 'react', 'vue'].includes(config.clientFramework),
       message: 'Would you like to use a Bootswatch theme (https://bootswatch.com/)?',
       choices: async () => {
-        const bootswatchChoices = await retrieveOnlineBootswatchThemes(this).catch(errorMessage => {
+        const bootswatchChoices = await retrieveOnlineBootswatchThemes().catch(errorMessage => {
           this.log.warn(errorMessage);
           return retrieveLocalBootswatchThemes();
         });
@@ -46,9 +48,9 @@ export async function askForClientTheme({ control }) {
     },
     this.config,
   );
-}
+});
 
-export async function askForClientThemeVariant({ control }) {
+export const askForClientThemeVariant = asPromptingTask(async function askForClientThemeVariant({ control }) {
   if (control.existingProject && !this.options.askAnswered) return;
   if ((this.jhipsterConfig.clientTheme ?? 'none') === 'none') {
     return;
@@ -70,17 +72,17 @@ export async function askForClientThemeVariant({ control }) {
     },
     this.config,
   );
-}
+});
 
-async function retrieveOnlineBootswatchThemes(generator) {
-  return _retrieveBootswatchThemes(generator, true);
+async function retrieveOnlineBootswatchThemes(): Promise<Choice[]> {
+  return _retrieveBootswatchThemes(true);
 }
 
-async function retrieveLocalBootswatchThemes(generator) {
-  return _retrieveBootswatchThemes(generator, false);
+async function retrieveLocalBootswatchThemes(): Promise<Choice[]> {
+  return _retrieveBootswatchThemes(false);
 }
 
-async function _retrieveBootswatchThemes(generator, useApi) {
+async function _retrieveBootswatchThemes(useApi): Promise<Choice[]> {
   const errorMessage = 'Could not fetch bootswatch themes from API. Using default ones.';
   if (!useApi) {
     return [
diff --git a/generators/client/support/entity-definition.ts b/generators/client/support/entity-definition.ts
index 858a11ee54d2..466c6e6421eb 100644
--- a/generators/client/support/entity-definition.ts
+++ b/generators/client/support/entity-definition.ts
@@ -67,7 +67,7 @@ const generateEntityClientFields = (
   dto,
   customDateType = 'dayjs.Dayjs',
   embedded = false,
-  clientFramework = ANGULAR,
+  clientFramework: string = ANGULAR,
 ) => {
   const variablesWithTypes = [];
   if (!embedded && primaryKey) {
@@ -106,7 +106,7 @@ const generateEntityClientFields = (
   relevantRelationships.forEach(relationship => {
     let fieldType;
     let fieldName;
-    const nullable = !relationship.relationshipValidateRules || !relationship.relationshipValidateRules.includes(REQUIRED);
+    const nullable = !relationship.relationshipValidateRules?.includes(REQUIRED);
     const relationshipType = relationship.relationshipType;
     if (relationshipType === 'one-to-many' || relationshipType === 'many-to-many') {
       fieldType = `I${relationship.otherEntityAngularName}[]`;
diff --git a/generators/client/support/template-utils.ts b/generators/client/support/template-utils.ts
index ab4cc4ce8bec..fd7a006b35a3 100644
--- a/generators/client/support/template-utils.ts
+++ b/generators/client/support/template-utils.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -20,6 +19,7 @@
 import path from 'path';
 
 import { clientFrameworkTypes, fieldTypes } from '../../../jdl/jhipster/index.js';
+import type { PrimaryKey } from '../../../lib/types/application/entity.js';
 import { getEntryIfTypeOrTypeAttribute } from './types-utils.js';
 
 const { STRING: TYPE_STRING, UUID: TYPE_UUID } = fieldTypes.CommonDBTypes;
@@ -100,7 +100,7 @@ export const generateEntityClientEnumImports = (fields, clientFramework) => {
  * @param {boolean} [wrapped=true] - wrapped values for required types.
  */
 
-export const generateTestEntityId = (primaryKey, index = 0, wrapped = true) => {
+export const generateTestEntityId = (primaryKey: string | PrimaryKey, index: string | number = 0, wrapped = true) => {
   primaryKey = getEntryIfTypeOrTypeAttribute(primaryKey);
   let value;
   if (primaryKey === TYPE_STRING) {
diff --git a/generators/client/support/types-utils.ts b/generators/client/support/types-utils.ts
index 4b292fe59141..072361f554ff 100644
--- a/generators/client/support/types-utils.ts
+++ b/generators/client/support/types-utils.ts
@@ -17,6 +17,7 @@
  * limitations under the License.
  */
 import { fieldTypes } from '../../../jdl/jhipster/index.js';
+import type { PrimaryKey } from '../../../lib/types/application/entity.js';
 import { fieldIsEnum } from '../../base-application/support/index.js';
 
 const {
@@ -36,7 +37,7 @@ const {
  * @param key
  * @returns {*}
  */
-export const getEntryIfTypeOrTypeAttribute = key => {
+export const getEntryIfTypeOrTypeAttribute = (key: string | PrimaryKey) => {
   if (typeof key === 'object') {
     return key.type;
   }
diff --git a/generators/client/types.d.ts b/generators/client/types.d.ts
index b930fcf0d470..f34232071d53 100644
--- a/generators/client/types.d.ts
+++ b/generators/client/types.d.ts
@@ -15,6 +15,7 @@ export type ClientApplication = ApplicationClientProperties &
   CypressApplication & {
     webappLoginRegExp: string;
     webappEnumerationsDir?: string;
+    clientFrameworkBuiltIn?: boolean;
   };
 
 export type ClientResources = {
diff --git a/generators/docker/support/check-docker.ts b/generators/docker/support/check-docker.ts
index e786d06a6ee3..fcb0766670ad 100644
--- a/generators/docker/support/check-docker.ts
+++ b/generators/docker/support/check-docker.ts
@@ -18,12 +18,13 @@
  * limitations under the License.
  */
 import chalk from 'chalk';
+import type CoreGenerator from '../../base-core/generator.js';
 
 /**
  * Check that Docker exists.
  * @this {import('../../base-core/index.js').default}
  */
-export const checkDocker = async function () {
+export const checkDocker = async function (this: CoreGenerator) {
   if (this.abort || this.skipChecks) return;
   const ret = await this.spawnCommand('docker -v', { reject: false, stdio: 'pipe' });
   if (ret.exitCode !== 0) {
diff --git a/generators/docker/utils.ts b/generators/docker/utils.ts
index 76e66e7115bb..73a378d19ead 100644
--- a/generators/docker/utils.ts
+++ b/generators/docker/utils.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -35,7 +34,7 @@ export function getDockerfileContainers(dockerfileContent) {
     let alias;
     if (instruction.getKeyword() === 'FROM') {
       imageWithTag = instruction.getArgumentsContent();
-      const split = instruction.getArgumentsContent().split(':');
+      const split = instruction.getArgumentsContent()!.split(':');
       image = split[0];
       tag = split[1];
       containers[image] = imageWithTag;
@@ -44,7 +43,7 @@ export function getDockerfileContainers(dockerfileContent) {
         alias = camelCase(image);
       }
     } else if (instruction.getKeyword() === 'LABEL') {
-      const split = instruction.getArgumentsContent().split('=');
+      const split = instruction.getArgumentsContent()!.split('=');
       if (split[0].toUpperCase() === 'ALIAS') {
         alias = camelCase(split[1]);
       }
diff --git a/generators/entity/generator.ts b/generators/entity/generator.ts
index a2bb964d156e..27a4153f20e0 100644
--- a/generators/entity/generator.ts
+++ b/generators/entity/generator.ts
@@ -23,19 +23,24 @@ import path from 'path';
 import chalk from 'chalk';
 import { upperFirst } from 'lodash-es';
 
+import type { Storage } from 'yeoman-generator';
 import BaseApplicationGenerator from '../base-application/index.js';
 import { JHIPSTER_CONFIG_DIR } from '../generator-constants.js';
 import { applicationTypes, reservedKeywords } from '../../jdl/jhipster/index.js';
 import { GENERATOR_ENTITIES } from '../generator-list.js';
 import { getDBTypeFromDBValue, hibernateSnakeCase } from '../server/support/index.js';
+import type { Entity } from '../../lib/types/application/entity.js';
 import prompts from './prompts.js';
 
 const { GATEWAY, MICROSERVICE } = applicationTypes;
 const { isReservedClassName } = reservedKeywords;
 
 export default class EntityGenerator extends BaseApplicationGenerator {
-  name;
-  application = {};
+  name!: string;
+  application: any = {};
+  entityStorage!: Storage;
+  entityConfig!: Entity;
+  entityData!: { name: string; filename: string; configExisted: any; entityExisted: boolean; configurationFileExists: boolean };
 
   constructor(args, options, features) {
     super(args, options, { unique: 'argument', ...features });
@@ -56,8 +61,8 @@ export default class EntityGenerator extends BaseApplicationGenerator {
     return this.asInitializingTaskGroup({
       parseOptions() {
         const name = upperFirst(this.name).replace('.json', '');
-        this.entityStorage = this.getEntityConfig(name, true);
-        this.entityConfig = this.entityStorage.createProxy();
+        this.entityStorage = this.getEntityConfig(name, true)!;
+        this.entityConfig = this.entityStorage.createProxy() as Entity;
 
         const configExisted = this.entityStorage.existed;
         const filename = path.join(JHIPSTER_CONFIG_DIR, `${name}.json`);
@@ -235,11 +240,11 @@ The entity ${entityName} is being created.
 
   // Public API method used by the getter and also by Blueprints
   get end() {
-    return {
+    return this.asEndTaskGroup({
       end() {
         this.log.log(chalk.bold.green(`Entity ${this.entityData.entityNameCapitalized} generated successfully.`));
       },
-    };
+    });
   }
 
   get [BaseApplicationGenerator.END]() {
diff --git a/generators/entity/prompts.ts b/generators/entity/prompts.ts
index e1f15a6d0f0b..b4d19a2b8774 100644
--- a/generators/entity/prompts.ts
+++ b/generators/entity/prompts.ts
@@ -30,6 +30,7 @@ import {
   validations,
 } from '../../jdl/jhipster/index.js';
 import { inputIsNumber, inputIsSignedDecimalNumber, inputIsSignedNumber } from './support/index.js';
+import type EntityGenerator from './generator.js';
 
 const { isReservedPaginationWords, isReservedFieldName, isReservedTableName } = reservedKeywords;
 const { NO: NO_DATABASE, CASSANDRA, SQL } = databaseTypes;
@@ -75,7 +76,7 @@ const getFieldNameUndercored = fields =>
     }),
   );
 
-function askForMicroserviceJson() {
+function askForMicroserviceJson(this: EntityGenerator) {
   const context = this.entityData;
   if (this.jhipsterConfig.applicationType !== GATEWAY || context.configExisted) {
     return undefined;
@@ -115,7 +116,7 @@ function askForMicroserviceJson() {
   });
 }
 
-function askForUpdate() {
+function askForUpdate(this: EntityGenerator) {
   const context = this.entityData;
   // ask only if running an existing entity without arg option --force or --regenerate
   const isForce = this.options.force || context.regenerate;
@@ -212,7 +213,7 @@ function askForFieldsToRemove() {
   });
 }
 
-function askForRelationships(...args) {
+function askForRelationships(this: EntityGenerator, ...args) {
   const context = this.entityData;
   // don't prompt if data is imported from a file
   if (context.useConfigurationFile && context.updateEntity !== 'add') {
@@ -225,7 +226,7 @@ function askForRelationships(...args) {
   return askForRelationship.call(this, ...args);
 }
 
-function askForRelationsToRemove() {
+function askForRelationsToRemove(this: EntityGenerator) {
   const context = this.entityData;
   // prompt only if data is imported from a file
   if (!context.useConfigurationFile || context.updateEntity !== 'remove' || this.entityConfig.relationships.length === 0) {
@@ -271,7 +272,7 @@ function askForRelationsToRemove() {
   });
 }
 
-function askForFiltering() {
+function askForFiltering(this: EntityGenerator) {
   const context = this.entityData;
   // don't prompt if server is skipped, or the backend is not sql, or no service requested
   if (context.useConfigurationFile || context.skipServer || context.databaseType !== 'sql' || this.entityConfig.service === 'no') {
@@ -300,7 +301,7 @@ function askForFiltering() {
   });
 }
 
-function askForReadOnly() {
+function askForReadOnly(this: EntityGenerator) {
   const context = this.entityData;
   // don't prompt if data is imported from a file
   if (context.useConfigurationFile) {
@@ -319,7 +320,7 @@ function askForReadOnly() {
   });
 }
 
-function askForDTO() {
+function askForDTO(this: EntityGenerator) {
   const context = this.entityData;
   // don't prompt if data is imported from a file or server is skipped or if no service layer
   if (context.useConfigurationFile || context.skipServer || this.entityConfig.service === 'no') {
@@ -348,7 +349,7 @@ function askForDTO() {
   });
 }
 
-function askForService() {
+function askForService(this: EntityGenerator) {
   const context = this.entityData;
   // don't prompt if data is imported from a file or server is skipped
   if (context.useConfigurationFile || context.skipServer) {
@@ -381,7 +382,7 @@ function askForService() {
   });
 }
 
-function askForPagination() {
+function askForPagination(this: EntityGenerator) {
   const context = this.entityData;
   // don't prompt if data are imported from a file
   if (context.useConfigurationFile) {
@@ -421,7 +422,7 @@ function askForPagination() {
 /**
  * ask question for a field creation
  */
-async function askForField() {
+async function askForField(this: EntityGenerator) {
   const context = this.entityData;
   this.log.log(chalk.green(`\nGenerating field #${this.entityConfig.fields.length + 1}\n`));
   const databaseType = context.databaseType;
@@ -515,7 +516,7 @@ async function askForField() {
         if (!/^[A-Za-z0-9_]*$/.test(input)) {
           return 'Your enum name cannot contain special characters (allowed characters: A-Z, a-z, 0-9 and _)';
         }
-        if (context.enums && context.enums.includes(input)) {
+        if (context.enums?.includes(input)) {
           context.existingEnum = true;
         } else if (context.enums) {
           context.enums.push(input);
@@ -736,7 +737,7 @@ async function askForField() {
 /**
  * ask question for a relationship creation
  */
-async function askForRelationship(...args) {
+async function askForRelationship(this: EntityGenerator, ...args) {
   const [{ application }] = args;
   const context = this.entityData;
   const name = context.name;
@@ -889,7 +890,7 @@ async function askForRelationship(...args) {
 /**
  * Show the entity and it's fields and relationships in console
  */
-function logFieldsAndRelationships() {
+function logFieldsAndRelationships(this: EntityGenerator) {
   const context = this.entityData;
   if (this.entityConfig.fields.length > 0 || this.entityConfig.relationships.length > 0) {
     this.log.log(chalk.red(chalk.white('\n================= ') + context.name + chalk.white(' =================')));
@@ -940,7 +941,7 @@ function logFieldsAndRelationships() {
     this.log.log(chalk.white('Relationships'));
     this.entityConfig.relationships.forEach(relationship => {
       const validationDetails = [];
-      if (relationship.relationshipValidateRules && relationship.relationshipValidateRules.includes(REQUIRED)) {
+      if (relationship.relationshipValidateRules?.includes(REQUIRED)) {
         validationDetails.push(REQUIRED);
       }
       this.log.log(
diff --git a/generators/entity/support/asserts.ts b/generators/entity/support/asserts.ts
index 8790e41fe5cf..38e402980eca 100644
--- a/generators/entity/support/asserts.ts
+++ b/generators/entity/support/asserts.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -27,7 +26,7 @@
  * @param isDecimal - flag indicating whether to check for decimal number or not
  * @returns {number} parsed number if valid input; <code>NaN</code> otherwise
  */
-const filterNumber = (input, isSigned, isDecimal) => {
+const filterNumber = (input: any, isSigned = false, isDecimal = false) => {
   const signed = isSigned ? '(-|+)?' : '';
   const decimal = isDecimal ? '(.[0-9]+)?' : '';
   const regex = new RegExp(`^${signed}([0-9]+${decimal})$`);
@@ -42,7 +41,7 @@ const filterNumber = (input, isSigned, isDecimal) => {
  * @param {any} input input
  * @returns {boolean} true if input is number; false otherwise
  */
-const isNumber = input => {
+const isNumber = (input: any): input is number => {
   return !isNaN(filterNumber(input));
 };
 
@@ -51,7 +50,7 @@ const isNumber = input => {
  * @param {any} input input
  * @returns {boolean} true if input is a signed number; false otherwise
  */
-const isSignedNumber = input => {
+const isSignedNumber = (input: any): boolean => {
   return !isNaN(filterNumber(input, true));
 };
 
@@ -60,7 +59,7 @@ const isSignedNumber = input => {
  * @param {any} input input
  * @returns {boolean} true if input is a signed decimal number; false otherwise
  */
-const isSignedDecimalNumber = input => {
+const isSignedDecimalNumber = (input: any): boolean => {
   return !isNaN(filterNumber(input, true, true));
 };
 
diff --git a/generators/generate-blueprint/files.ts b/generators/generate-blueprint/files.ts
index 7f18a96e8068..52f2e5c0f71d 100644
--- a/generators/generate-blueprint/files.ts
+++ b/generators/generate-blueprint/files.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -20,7 +19,7 @@
 import { asWriteFilesSection } from '../base-application/support/index.js';
 import { LOCAL_BLUEPRINT_OPTION } from './constants.js';
 
-export const files = asWriteFilesSection({
+export const files = asWriteFilesSection<any>({
   baseFiles: [
     {
       condition: ctx => !ctx[LOCAL_BLUEPRINT_OPTION],
@@ -94,7 +93,7 @@ export const generatorFiles = {
       path: 'generators/generator',
       to: ctx => `${ctx.application.blueprintsPath}${ctx.generator}`,
       condition(ctx) {
-        return (this.options.force || !ctx.written) && ctx.priorities.find(priority => priority.name === 'writing');
+        return ((this as any).options.force || !ctx.written) && ctx.priorities.find(priority => priority.name === 'writing');
       },
       transform: false,
       templates: [
diff --git a/generators/generate-blueprint/generator.ts b/generators/generate-blueprint/generator.ts
index 1152bac90061..59dd31e633d0 100644
--- a/generators/generate-blueprint/generator.ts
+++ b/generators/generate-blueprint/generator.ts
@@ -52,6 +52,8 @@ const { GENERATOR_PROJECT_NAME, GENERATOR_INIT } = GENERATOR_LIST;
 const defaultPublishedFiles = ['generators', '!**/__*', '!**/*.snap', '!**/*.spec.?(c|m)js'];
 
 export default class extends BaseGenerator {
+  application!: any;
+
   async _beforeQueue() {
     if (!this.fromBlueprint) {
       await this.composeWithBlueprints();
@@ -80,7 +82,7 @@ export default class extends BaseGenerator {
   }
 
   get prompting() {
-    return {
+    return this.asPromptingTaskGroup({
       async prompting() {
         await this.prompt(prompts(this), this.config);
       },
@@ -111,7 +113,7 @@ export default class extends BaseGenerator {
           await this.prompt(subGeneratorPrompts({ subGenerator, localBlueprint, additionalSubGenerator: true }), subGeneratorStorage);
         }
       },
-    };
+    });
   }
 
   get [BaseGenerator.PROMPTING]() {
@@ -119,7 +121,7 @@ export default class extends BaseGenerator {
   }
 
   get configuring() {
-    return {
+    return this.asConfiguringTaskGroup({
       requiredConfig() {
         this.config.defaults(requiredConfig());
       },
@@ -131,7 +133,7 @@ export default class extends BaseGenerator {
           });
         }
       },
-    };
+    });
   }
 
   get [BaseGenerator.CONFIGURING]() {
@@ -139,13 +141,13 @@ export default class extends BaseGenerator {
   }
 
   get composing() {
-    return {
+    return this.asComposingTaskGroup({
       async compose() {
         if (this.jhipsterConfig[LOCAL_BLUEPRINT_OPTION]) return;
         const initGenerator = await this.composeWithJHipster(GENERATOR_INIT, { generatorOptions: { packageJsonType: 'module' } });
         initGenerator.generateReadme = false;
       },
-    };
+    });
   }
 
   get [BaseGenerator.COMPOSING]() {
@@ -336,7 +338,7 @@ export default class extends BaseGenerator {
   }
 
   get postInstall() {
-    return {
+    return this.asPostInstallTaskGroup({
       async addSnapshot() {
         const { [LOCAL_BLUEPRINT_OPTION]: localBlueprint } = this.jhipsterConfig;
         const {
@@ -365,7 +367,7 @@ This is a new blueprint, executing '${chalk.yellow('npm run update-snapshot')}'
           this.log.warn('Fail to generate snapshots');
         }
       },
-    };
+    });
   }
 
   get [BaseGenerator.POST_INSTALL]() {
@@ -373,7 +375,7 @@ This is a new blueprint, executing '${chalk.yellow('npm run update-snapshot')}'
   }
 
   get end() {
-    return {
+    return this.asEndTaskGroup({
       end() {
         if (this.jhipsterConfig[LOCAL_BLUEPRINT_OPTION]) return;
 
@@ -389,7 +391,7 @@ To begin to work:
 - then, come back here, and begin to code!
 `);
       },
-    };
+    });
   }
 
   get [BaseGenerator.END]() {
diff --git a/generators/init/generator.ts b/generators/init/generator.ts
index a4f3ca76702b..aa045f4f23c1 100644
--- a/generators/init/generator.ts
+++ b/generators/init/generator.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -21,10 +20,6 @@ import BaseApplicationGenerator from '../base-application/index.js';
 import { GENERATOR_GIT } from '../generator-list.js';
 import { files, readme } from './files.js';
 
-/**
- * @class
- * @extends {BaseApplicationGenerator<import('../base-application/types.js').BaseApplication>}
- */
 export default class InitGenerator extends BaseApplicationGenerator {
   generateReadme = true;
 
diff --git a/generators/java/support/checks/check-java.ts b/generators/java/support/checks/check-java.ts
index 654f4544a835..dacca95d598b 100644
--- a/generators/java/support/checks/check-java.ts
+++ b/generators/java/support/checks/check-java.ts
@@ -28,11 +28,11 @@ export default (javaCompatibleVersions: string[]): ValidationResult & { javaVers
   try {
     const { exitCode, stderr } = execaCommandSync('java -version', { stdio: 'pipe' });
     if (exitCode === 0 && stderr) {
-      const matchResult = stderr.match(/(?:java|openjdk)(?: version)? "?(.*)"? /s);
+      const matchResult = /(?:java|openjdk)(?: version)? "?(.*)"? /s.exec(stderr);
       if (matchResult && matchResult.length > 0) {
         const javaVersion = matchResult[1];
         const debug = `Detected java version ${javaVersion}`;
-        if (javaCompatibleVersions && !javaVersion.match(new RegExp(`(${javaCompatibleVersions.map(ver => `^${ver}`).join('|')})`))) {
+        if (javaCompatibleVersions && !new RegExp(`(${javaCompatibleVersions.map(ver => `^${ver}`).join('|')})`).exec(javaVersion)) {
           const [latest, ...others] = javaCompatibleVersions.concat().reverse();
           const humanizedVersions = `${others.reverse().join(', ')} or ${latest}`;
           const warning = `Java ${humanizedVersions} are not found on your computer. Your Java version is: ${chalk.yellow(javaVersion)}`;
diff --git a/generators/javascript/generators/bootstrap/generator.ts b/generators/javascript/generators/bootstrap/generator.ts
index 889cffdf8ffc..770a25f06449 100644
--- a/generators/javascript/generators/bootstrap/generator.ts
+++ b/generators/javascript/generators/bootstrap/generator.ts
@@ -80,7 +80,7 @@ export default class BootstrapGenerator extends BaseApplicationGenerator {
         }
         if (packageJsonNodeEngine) {
           this.packageJson.set('engines', {
-            ...((this.packageJson.get('engines') as object) ?? {}),
+            ...(this.packageJson.get('engines') ?? {}),
             node: typeof packageJsonNodeEngine === 'string' ? packageJsonNodeEngine : packageJson.engines.node,
           });
         }
diff --git a/generators/javascript/generators/eslint/support/tasks.ts b/generators/javascript/generators/eslint/support/tasks.ts
index 07a2f6103136..4848e19ce711 100644
--- a/generators/javascript/generators/eslint/support/tasks.ts
+++ b/generators/javascript/generators/eslint/support/tasks.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -18,10 +17,9 @@
  * limitations under the License.
  */
 import { asWritingTask } from '../../../../base-application/support/index.js';
-import type { WritingTaskParam } from '../../../../base-application/tasks.js';
 import { clientRootTemplatesBlock } from '../../../../client/support/files.js';
 
-export const writeEslintClientRootConfigFile: WritingTaskParam = asWritingTask(async function writingEslintFile({ application }) {
+export const writeEslintClientRootConfigFile = asWritingTask(async function writingEslintFile({ application }) {
   await this.writeFiles({
     blocks: [
       clientRootTemplatesBlock({
diff --git a/generators/jdl/internal/utils.ts b/generators/jdl/internal/utils.ts
index 08768d05d21d..86837eed1a02 100644
--- a/generators/jdl/internal/utils.ts
+++ b/generators/jdl/internal/utils.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -25,7 +24,8 @@ import { join } from 'path';
  * @param {string} baseName
  * @return {boolean}
  */
-export const baseNameConfigExists = baseName => existsSync(baseName === undefined ? '.yo-rc.json' : join(baseName, '.yo-rc.json'));
+export const baseNameConfigExists = (baseName?: string) =>
+  existsSync(baseName === undefined ? '.yo-rc.json' : join(baseName, '.yo-rc.json'));
 
 /**
  * Check if every application is new.
diff --git a/generators/kubernetes/prompts.ts b/generators/kubernetes/prompts.ts
index e5e1e01e5c9a..d36fd19541aa 100644
--- a/generators/kubernetes/prompts.ts
+++ b/generators/kubernetes/prompts.ts
@@ -120,7 +120,7 @@ export async function askForIngressDomain() {
   if (!this.options.askAnswered && (this.regenerate || this.config.existed)) return;
   const kubernetesServiceType = this.kubernetesServiceType;
   const istio = this.istio;
-  this.ingressDomain = this.ingressDomain && this.ingressDomain.startsWith('.') ? this.ingressDomain.substring(1) : this.ingressDomain;
+  this.ingressDomain = this.ingressDomain?.startsWith('.') ? this.ingressDomain.substring(1) : this.ingressDomain;
 
   const istioIpCommand = "kubectl -n istio-system get svc istio-ingressgateway -o jsonpath='{.status.loadBalancer.ingress[0].ip}'";
   let istioMessage = '';
diff --git a/generators/languages/entity-files.ts b/generators/languages/entity-files.ts
index c89d8a3439b6..48e37ebd6dfa 100644
--- a/generators/languages/entity-files.ts
+++ b/generators/languages/entity-files.ts
@@ -17,7 +17,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-import { getEnumInfo } from '../base-application/support/index.js';
+import { asWritingEntitiesTask, getEnumInfo } from '../base-application/support/index.js';
 import { CLIENT_MAIN_SRC_DIR } from '../generator-constants.js';
 
 /**
@@ -63,7 +63,7 @@ export const enumClientI18nFiles = {
 
 export function writeEntityFiles() {
   return {
-    async writeEnumFiles({ entities, application }) {
+    writeEnumFiles: asWritingEntitiesTask(async function ({ entities, application }) {
       if (application.skipClient) return;
       const languagesToApply = application.enableTranslation ? this.languagesToApply : [...new Set([application.nativeLanguage, 'en'])];
       entities = entities.filter(entity => !entity.skipClient && !entity.builtInUser);
@@ -91,12 +91,12 @@ export function writeEntityFiles() {
           )
           .flat(),
       );
-    },
+    }),
 
-    async writeClientFiles({ application, entities }) {
+    writeClientFiles: asWritingEntitiesTask(async function ({ application, entities }) {
       if (application.skipClient) return;
       const entitiesToWriteTranslationFor = entities.filter(entity => !entity.skipClient && !entity.builtInUser);
-      if (application.userManagement && application.userManagement.skipClient) {
+      if (application.userManagement?.skipClient) {
         entitiesToWriteTranslationFor.push(application.userManagement);
       }
 
@@ -112,6 +112,6 @@ export function writeEntityFiles() {
           }
         }
       }
-    },
+    }),
   };
 }
diff --git a/generators/languages/generator.ts b/generators/languages/generator.ts
index 611edb19c1b6..42ea39fb4ae2 100644
--- a/generators/languages/generator.ts
+++ b/generators/languages/generator.ts
@@ -44,6 +44,7 @@ const { NO: NO_CLIENT_FRAMEWORK, ANGULAR } = clientFrameworkTypes;
  * @extends {BaseApplicationGenerator}
  */
 export default class LanguagesGenerator extends BaseApplicationGenerator {
+  askForMoreLanguages!: boolean;
   translationData;
   supportedLanguages;
   languages;
@@ -52,7 +53,7 @@ export default class LanguagesGenerator extends BaseApplicationGenerator {
    * Can be incremental or every language.
    */
   languagesToApply;
-  composedBlueprints = [];
+  composedBlueprints!: string[] = [];
   languageCommand;
   writeJavaLanguageFiles;
   regenerateLanguages;
@@ -380,7 +381,7 @@ export default class LanguagesGenerator extends BaseApplicationGenerator {
     if (languagesToMigrate[nativeLanguage]) {
       this.jhipsterConfig.nativeLanguage = languagesToMigrate[nativeLanguage];
     }
-    if (languages && languages.some(lang => languagesToMigrate[lang])) {
+    if (languages?.some(lang => languagesToMigrate[lang])) {
       this.jhipsterConfig.languages = languages.map(lang => languagesToMigrate[lang] ?? lang);
     }
   }
diff --git a/generators/languages/prompts.ts b/generators/languages/prompts.ts
index a888305a1249..56e1e97d0edd 100644
--- a/generators/languages/prompts.ts
+++ b/generators/languages/prompts.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -17,10 +16,11 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+import type LanguagesGenerator from './generator.js';
 import detectLanguage from './support/detect-language.js';
 import { languagesAsChoices } from './support/languages.js';
 
-export async function askI18n() {
+export async function askI18n(this: LanguagesGenerator) {
   if (!this.askForMoreLanguages) return;
   const nativeLanguage = this.jhipsterConfig.nativeLanguage;
   const answers = await this.prompt(
@@ -47,7 +47,7 @@ export async function askI18n() {
   }
 }
 
-export async function askForLanguages({ control }) {
+export async function askForLanguages(this: LanguagesGenerator, { control }) {
   if (!this.askForMoreLanguages) {
     return;
   }
diff --git a/generators/languages/support/translate.ts b/generators/languages/support/translate.ts
index fda457bb9ea1..8a5c532833a6 100644
--- a/generators/languages/support/translate.ts
+++ b/generators/languages/support/translate.ts
@@ -54,7 +54,7 @@ export const replaceTranslationKeysWithText = (
 
     let key = match.groups?.key;
     if (!key && keyPattern) {
-      const keyMatch = target.match(new RegExp(keyPattern));
+      const keyMatch = new RegExp(keyPattern).exec(target);
       key = keyMatch?.groups?.key;
     }
     if (!key) {
@@ -63,7 +63,7 @@ export const replaceTranslationKeysWithText = (
 
     let interpolate = match.groups?.interpolate;
     if (!interpolate && interpolatePattern) {
-      const interpolateMatch = target.match(new RegExp(interpolatePattern));
+      const interpolateMatch = new RegExp(interpolatePattern).exec(target);
       interpolate = interpolateMatch?.groups?.interpolate;
     }
 
diff --git a/generators/liquibase/generator.ts b/generators/liquibase/generator.ts
index c00b5a00cb72..9c82663bb602 100644
--- a/generators/liquibase/generator.ts
+++ b/generators/liquibase/generator.ts
@@ -489,7 +489,7 @@ export default class LiquibaseGenerator extends BaseEntityChangesGenerator {
 
         source.addGradleProperty?.({ property: 'liquibaseTaskPrefix', value: 'liquibase' });
         source.addGradleProperty?.({ property: 'liquibasePluginVersion', value: gradleLiquibaseVersion });
-        if (application.javaManagedProperties && application.javaManagedProperties['liquibase.version']) {
+        if (application.javaManagedProperties?.['liquibase.version']) {
           source.addGradleProperty?.({ property: 'liquibaseCoreVersion', value: application.javaManagedProperties['liquibase.version'] });
         }
 
diff --git a/generators/needle-api.ts b/generators/needle-api.ts
index 8ea7f2bdb51f..ebeef04f0a73 100644
--- a/generators/needle-api.ts
+++ b/generators/needle-api.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -24,6 +23,12 @@ import ClientReact from './react/needle-api/needle-client-react.js';
 import ClientVue from './client/needle-api/needle-client-vue.js';
 
 export default class NeedleApi {
+  base: Base;
+  client: Client;
+  clientAngular: ClientAngular;
+  clientReact: ClientReact;
+  clientVue: ClientVue;
+
   constructor(generator) {
     this.base = new Base(generator);
     this.client = new Client(generator);
diff --git a/generators/project-name/generator.ts b/generators/project-name/generator.ts
index 9ef7e53d9900..740ec71bdf63 100644
--- a/generators/project-name/generator.ts
+++ b/generators/project-name/generator.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -35,8 +34,9 @@ export default class ProjectNameGenerator extends BaseApplicationGenerator {
   javaApplication;
 
   async beforeQueue() {
-    this.sharedData.getControl().existingProject =
-      this.options.defaults || this.options.applicationWithConfig || (this.jhipsterConfig.baseName !== undefined && this.config.existed);
+    this.sharedData.getControl().existingProject = Boolean(
+      this.options.defaults || this.options.applicationWithConfig || (this.jhipsterConfig.baseName !== undefined && this.config.existed),
+    );
 
     if (!this.fromBlueprint) {
       await this.composeWithBlueprints();
@@ -63,7 +63,7 @@ export default class ProjectNameGenerator extends BaseApplicationGenerator {
   }
 
   get prompting() {
-    return {
+    return this.asPromptingTaskGroup({
       async showPrompts() {
         await this.prompt(
           [
@@ -78,7 +78,7 @@ export default class ProjectNameGenerator extends BaseApplicationGenerator {
           this.config,
         );
       },
-    };
+    });
   }
 
   get [BaseApplicationGenerator.PROMPTING]() {
diff --git a/generators/project-name/support/name-resolver.ts b/generators/project-name/support/name-resolver.ts
index 790d5bf9110e..68348a226e3f 100644
--- a/generators/project-name/support/name-resolver.ts
+++ b/generators/project-name/support/name-resolver.ts
@@ -27,7 +27,7 @@ export const validateJavaApplicationName = (name: string) => {
   if (!/^([\w]*)$/.test(name)) {
     return 'Your base name cannot contain special characters or a blank space';
   }
-  if (/_/.test(name)) {
+  if (name.includes('_')) {
     return 'Your base name cannot contain underscores as this does not meet the URI spec';
   }
   if (name.toLowerCase() === 'application') {
diff --git a/generators/react/cleanup.ts b/generators/react/cleanup.ts
index d7aecf857949..aeb5cab540ea 100644
--- a/generators/react/cleanup.ts
+++ b/generators/react/cleanup.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -18,11 +17,13 @@
  * limitations under the License.
  */
 
+import { asWritingTask } from '../base-application/support/task-type-inference.js';
+
 /**
  * Removes files that where generated in previous JHipster versions and therefore
  * need to be removed.
  */
-export default function cleanupOldFilesTask({ application } = {}) {
+export default asWritingTask(function cleanupOldFilesTask({ application }) {
   if (this.isJhipsterVersionLessThan('6.3.0')) {
     this.removeFile('tslint.json');
   }
@@ -75,4 +76,4 @@ export default function cleanupOldFilesTask({ application } = {}) {
   if (this.isJhipsterVersionLessThan('7.9.3')) {
     this.removeFile(`${application.clientSrcDir}app/config/translation-middleware.ts`);
   }
-}
+});
diff --git a/generators/react/entity-files-react.ts b/generators/react/entity-files-react.ts
index 6505a1ab5b31..458c2193ce06 100644
--- a/generators/react/entity-files-react.ts
+++ b/generators/react/entity-files-react.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -17,6 +16,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+import { asPostWritingEntitiesTask, asWritingEntitiesTask } from '../base-application/support/task-type-inference.js';
 import { clientApplicationTemplatesBlock } from '../client/support/index.js';
 
 export const reactFiles = {
@@ -51,7 +51,7 @@ export const reactFiles = {
   ],
 };
 
-export async function writeEntitiesFiles({ control, application, entities }) {
+export const writeEntitiesFiles = asWritingEntitiesTask(async function ({ control, application, entities }) {
   for (const entity of (control.filterEntitiesAndPropertiesForClient ?? (entities => entities))(entities).filter(
     entity => !entity.builtInUser,
   )) {
@@ -60,24 +60,29 @@ export async function writeEntitiesFiles({ control, application, entities }) {
       context: { ...application, ...entity },
     });
   }
-}
+});
 
-export async function postWriteEntitiesFiles({ control, application, entities }) {
+export const postWriteEntitiesFiles = asPostWritingEntitiesTask(async function ({ control, application, entities }) {
   for (const entity of (control.filterEntitiesForClient ?? (entities => entities))(entities).filter(entity => !entity.builtInUser)) {
     if (!entity.embedded) {
       const { entityInstance, entityClass, entityAngularName, entityFolderName, entityFileName } = entity;
 
       const { applicationTypeMicroservice, clientSrcDir } = application;
       this.needleApi.clientReact.addEntityToModule(entityInstance, entityClass, entityAngularName, entityFolderName, entityFileName, {
-        applicationTypeMicroservice,
-        clientSrcDir,
+        applicationTypeMicroservice: applicationTypeMicroservice!,
+        clientSrcDir: clientSrcDir!,
       });
-      this.addEntityToMenu(entity.entityPage, application.enableTranslation, entity.entityTranslationKeyMenu, entity.entityClassHumanized);
+      (this as any).addEntityToMenu(
+        entity.entityPage,
+        application.enableTranslation,
+        entity.entityTranslationKeyMenu,
+        entity.entityClassHumanized,
+      );
     }
   }
-}
+});
 
-export function cleanupEntitiesFiles({ control, application, entities }) {
+export const cleanupEntitiesFiles = asWritingEntitiesTask(function cleanupEntitiesFiles({ control, application, entities }) {
   for (const entity of (control.filterEntitiesForClient ?? (entities => entities))(entities).filter(entity => !entity.builtInUser)) {
     const { entityFolderName, entityFileName } = entity;
 
@@ -85,4 +90,4 @@ export function cleanupEntitiesFiles({ control, application, entities }) {
       this.removeFile(`${application.clientTestDir}spec/app/entities/${entityFolderName}/${entityFileName}-reducer.spec.ts`);
     }
   }
-}
+});
diff --git a/generators/react/files-react.ts b/generators/react/files-react.ts
index eca623384fc3..69681c39ed1f 100644
--- a/generators/react/files-react.ts
+++ b/generators/react/files-react.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -17,7 +16,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-import { asWriteFilesSection } from '../base-application/support/index.js';
+import { asWriteFilesSection, asWritingTask } from '../base-application/support/index.js';
 import { clientApplicationTemplatesBlock, clientRootTemplatesBlock, clientSrcTemplatesBlock } from '../client/support/files.js';
 
 export const files = asWriteFilesSection({
@@ -308,11 +307,11 @@ export const files = asWriteFilesSection({
   ],
 });
 
-export async function writeFiles({ application }) {
+export const writeFiles = asWritingTask(async function writeFiles({ application }) {
   if (!application.clientFrameworkReact) return;
 
   await this.writeFiles({
     sections: files,
     context: application,
   });
-}
+});
diff --git a/generators/react/generator.ts b/generators/react/generator.ts
index 0495d37fe1d8..2a8cc8a56951 100644
--- a/generators/react/generator.ts
+++ b/generators/react/generator.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -264,11 +263,11 @@ export default class ReactGenerator extends BaseApplicationGenerator {
    * @param {string} pageTitle - The translation key or the text for the page title in the browser
    */
   addEntityToModule(
-    entityInstance = this.entityInstance,
-    entityClass = this.entityClass,
-    entityName = this.entityAngularName,
-    entityFolderName = this.entityFolderName,
-    entityFileName = this.entityFileName,
+    entityInstance,
+    entityClass,
+    entityName,
+    entityFolderName,
+    entityFileName,
     { applicationTypeMicroservice, clientSrcDir },
   ) {
     this.needleApi.clientReact.addEntityToModule(entityInstance, entityClass, entityName, entityFolderName, entityFileName, {
diff --git a/generators/react/support/translate-react.ts b/generators/react/support/translate-react.ts
index f55ecccc46f8..dc553c806bf4 100644
--- a/generators/react/support/translate-react.ts
+++ b/generators/react/support/translate-react.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -35,11 +34,13 @@ function getTranslationValue(getWebappTranslation, key, data) {
   return getWebappTranslation(key, data) || undefined;
 }
 
+type Options = { keyPattern?: string; interpolatePattern?: string; wrapTranslation?: string | string[]; escapeHtml?: boolean };
+
 const replaceTranslationKeysWithText = (
   getWebappTranslation,
-  body,
-  regexp,
-  { keyPattern, interpolatePattern, wrapTranslation, escapeHtml } = {},
+  body: string,
+  regexp: string,
+  { keyPattern, interpolatePattern, wrapTranslation, escapeHtml }: Options = {},
 ) => {
   const matches = body.matchAll(new RegExp(regexp, 'g'));
   if (typeof wrapTranslation === 'string') {
@@ -48,19 +49,19 @@ const replaceTranslationKeysWithText = (
   for (const match of matches) {
     const target = match[0];
 
-    let key = match.groups && match.groups.key;
+    let key = match.groups?.key;
     if (!key && keyPattern) {
-      const keyMatch = target.match(new RegExp(keyPattern));
-      key = keyMatch && keyMatch.groups && keyMatch.groups.key;
+      const keyMatch = new RegExp(keyPattern).exec(target);
+      key = keyMatch?.groups?.key;
     }
     if (!key) {
       throw new Error(`Translation key not found for ${target}`);
     }
 
-    let interpolate = match.groups && match.groups.interpolate;
+    let interpolate = match.groups?.interpolate;
     if (!interpolate && interpolatePattern) {
-      const interpolateMatch = target.match(new RegExp(interpolatePattern));
-      interpolate = interpolateMatch && interpolateMatch.groups && interpolateMatch.groups.interpolate;
+      const interpolateMatch = new RegExp(interpolatePattern).exec(target);
+      interpolate = interpolateMatch?.groups?.interpolate;
     }
 
     let data;
@@ -68,8 +69,8 @@ const replaceTranslationKeysWithText = (
       const interpolateMatches = interpolate.matchAll(/(?<field>[^{\s:,}]+)(?::\s*(?<value>[^,}]+))?/g);
       data = {};
       for (const interpolateMatch of interpolateMatches) {
-        const field = interpolateMatch.groups.field;
-        let value = interpolateMatch.groups.value;
+        const field = interpolateMatch?.groups?.field;
+        let value: string | number | undefined = interpolateMatch?.groups?.value;
         if (value === undefined) {
           value = key;
         }
@@ -84,7 +85,7 @@ const replaceTranslationKeysWithText = (
           // wrap expression
           value = `{${value}}`;
         }
-        data[field] = value;
+        data[field!] = value;
       }
     }
 
@@ -110,8 +111,8 @@ const replaceTranslationKeysWithText = (
  * @return {import('../../base/api.js').EditFileCallback}
  */
 export const createTranslationReplacer = getWebappTranslation =>
-  function replaceReactTranslations(body, filePath) {
-    if (/\.tsx$/.test(filePath)) {
+  function replaceReactTranslations(body: string, filePath: string) {
+    if (filePath.endsWith('.tsx')) {
       body = body.replace(new RegExp(TRANSLATE_IMPORT, 'g'), '');
       body = replaceTranslationKeysWithText(getWebappTranslation, body, `\\{\\s*${TRANSLATE_FUNCTION}\\s*\\}`, { wrapTranslation: '"' });
       body = replaceTranslationKeysWithText(getWebappTranslation, body, TRANSLATE_FUNCTION, { wrapTranslation: '"' });
diff --git a/generators/server/generator.ts b/generators/server/generator.ts
index a1b50aedd342..df2d80098a54 100644
--- a/generators/server/generator.ts
+++ b/generators/server/generator.ts
@@ -336,7 +336,7 @@ export default class JHipsterServerGenerator extends BaseApplicationGenerator {
         const databaseType = entityConfig.databaseType ?? application.databaseType;
         // Validate entity json field content
         const fields = entityConfig.fields;
-        fields.forEach(field => {
+        fields!.forEach(field => {
           // Migration from JodaTime to Java Time
           if (field.fieldType === 'DateTime' || field.fieldType === 'Date') {
             field.fieldType = INSTANT;
@@ -378,7 +378,7 @@ Hibernate JPA 2 Metamodel does not work with Bean Validation 2 for LOB fields, s
       configureRelationships({ entityConfig, entityName }) {
         // Validate entity json relationship content
         const relationships = entityConfig.relationships;
-        relationships.forEach(relationship => {
+        relationships!.forEach(relationship => {
           this._validateRelationship(entityName, relationship);
 
           if (relationship.relationshipName === undefined) {
diff --git a/generators/server/support/prepare-entity.ts b/generators/server/support/prepare-entity.ts
index 82b22189f868..c46049a326f1 100644
--- a/generators/server/support/prepare-entity.ts
+++ b/generators/server/support/prepare-entity.ts
@@ -109,7 +109,7 @@ export function preparePostEntityServerDerivedProperties(entity) {
       entity.uniqueEnums[field.fieldType] = field.fieldType;
     }
   });
-  if (entity.primaryKey && entity.primaryKey.derived) {
+  if (entity.primaryKey?.derived) {
     entity.isUsingMapsId = true;
     entity.mapsIdAssoc = entity.relationships.find(rel => rel.id);
   } else {
diff --git a/generators/spring-boot/entity-cleanup.ts b/generators/spring-boot/entity-cleanup.ts
index b4774fcb45d8..42a1b42920e4 100644
--- a/generators/spring-boot/entity-cleanup.ts
+++ b/generators/spring-boot/entity-cleanup.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -17,6 +16,10 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+import type { ApplicationType } from '../../lib/types/application/application.js';
+import type { Entity } from '../../lib/types/application/entity.js';
+import type CoreGenerator from '../base-core/generator.js';
+
 /**
  * Removes server files that where generated in previous JHipster versions and therefore
  * need to be removed.
@@ -25,11 +28,13 @@
  * @param {Object} application
  * @param {Object} entity
  */
-
-export function cleanupOldFiles({
-  application: { packageFolder, srcMainJava, srcTestJava, searchEngineElasticsearch },
-  entity: { entityClass, entityAbsoluteFolder },
-}) {
+export function cleanupOldFiles(
+  this: CoreGenerator,
+  {
+    application: { packageFolder, srcMainJava, srcTestJava, searchEngineElasticsearch },
+    entity: { entityClass, entityAbsoluteFolder },
+  }: { application: ApplicationType<Entity>; entity: Entity },
+) {
   if (this.isJhipsterVersionLessThan('7.6.1')) {
     if (searchEngineElasticsearch) {
       this.removeFile(`${srcMainJava}${packageFolder}/repository/search/SortToFieldSortBuilderConverter.java`);
diff --git a/generators/spring-boot/entity-files.ts b/generators/spring-boot/entity-files.ts
index 3dbd3dc82d4d..a76c32c90bc9 100644
--- a/generators/spring-boot/entity-files.ts
+++ b/generators/spring-boot/entity-files.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -23,6 +22,7 @@ import chalk from 'chalk';
 import { javaMainPackageTemplatesBlock, javaTestPackageTemplatesBlock, moveToJavaPackageSrcDir } from '../java/support/index.js';
 import { SERVER_TEST_SRC_DIR } from '../generator-constants.js';
 import { databaseTypes, entityOptions } from '../../jdl/jhipster/index.js';
+import { asWritingEntitiesTask } from '../base-application/support/task-type-inference.js';
 import { cleanupOldFiles } from './entity-cleanup.js';
 
 const { COUCHBASE, MONGODB, NEO4J, SQL } = databaseTypes;
@@ -196,13 +196,13 @@ export const serverFiles = {
 
 export function writeFiles() {
   return {
-    cleanupOldServerFiles({ application, entities }) {
+    cleanupOldServerFiles: asWritingEntitiesTask(function ({ application, entities }) {
       for (const entity of entities.filter(entity => !entity.skipServer)) {
         cleanupOldFiles.call(this, { application, entity });
       }
-    },
+    }),
 
-    async writeServerFiles({ application, entities }) {
+    writeServerFiles: asWritingEntitiesTask(async function ({ application, entities }) {
       const rootTemplatesPath = application.reactive
         ? ['reactive', '', '../../server/templates/', '../../java/generators/domain/templates/']
         : ['', '../../server/templates/', '../../java/generators/domain/templates/'];
@@ -221,6 +221,6 @@ export function writeFiles() {
           });
         }
       }
-    },
+    }),
   };
 }
diff --git a/generators/spring-boot/prompts.ts b/generators/spring-boot/prompts.ts
index f8452420ff32..652ed810786d 100644
--- a/generators/spring-boot/prompts.ts
+++ b/generators/spring-boot/prompts.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -31,6 +30,7 @@ import {
 } from '../../jdl/jhipster/index.js';
 import { MESSAGE_BROKER } from '../server/options/index.js';
 import { R2DBC_DB_OPTIONS, SQL_DB_OPTIONS } from '../server/support/database.js';
+import type CoreGenerator from '../base-core/generator.js';
 
 const { OptionNames } = applicationOptions;
 const { GATEWAY, MONOLITH } = applicationTypes;
@@ -59,7 +59,7 @@ const { GATLING, CUCUMBER } = testFrameworkTypes;
  * @returns {boolean} true if option is in array and is set to 'true'
  */
 const getOptionFromArray = (array, option) => {
-  let optionValue = false;
+  let optionValue: any = false;
   array.forEach(value => {
     if (includes(value, option)) {
       optionValue = value.split(':')[1];
@@ -69,138 +69,140 @@ const getOptionFromArray = (array, option) => {
   return optionValue;
 };
 
-export async function askForServerSideOpts({ control }) {
+export async function askForServerSideOpts(this: CoreGenerator, { control }) {
   if (control.existingProject && !this.options.askAnswered) return;
 
   const { applicationType } = this.jhipsterConfigWithDefaults;
-  const prompts = [
-    {
-      type: 'list',
-      name: DATABASE_TYPE,
-      message: `Which ${chalk.yellow('*type*')} of database would you like to use?`,
-      choices: answers => {
-        const opts = [];
-        if (!answers.reactive) {
+
+  await this.prompt(
+    [
+      {
+        type: 'list',
+        name: DATABASE_TYPE,
+        message: `Which ${chalk.yellow('*type*')} of database would you like to use?`,
+        choices: answers => {
+          const opts: any[] = [];
+          if (!answers.reactive) {
+            opts.push({
+              value: SQL,
+              name: 'SQL (H2, PostgreSQL, MySQL, MariaDB, Oracle, MSSQL)',
+            });
+          } else {
+            opts.push({
+              value: SQL,
+              name: 'SQL (H2, PostgreSQL, MySQL, MariaDB, MSSQL)',
+            });
+          }
           opts.push({
-            value: SQL,
-            name: 'SQL (H2, PostgreSQL, MySQL, MariaDB, Oracle, MSSQL)',
+            value: MONGODB,
+            name: 'MongoDB',
           });
-        } else {
+          if (answers.authenticationType !== OAUTH2) {
+            opts.push({
+              value: CASSANDRA,
+              name: 'Cassandra',
+            });
+          }
           opts.push({
-            value: SQL,
-            name: 'SQL (H2, PostgreSQL, MySQL, MariaDB, MSSQL)',
+            value: 'couchbase',
+            name: '[BETA] Couchbase',
           });
-        }
-        opts.push({
-          value: MONGODB,
-          name: 'MongoDB',
-        });
-        if (answers.authenticationType !== OAUTH2) {
           opts.push({
-            value: CASSANDRA,
-            name: 'Cassandra',
+            value: NEO4J,
+            name: '[BETA] Neo4j',
           });
-        }
-        opts.push({
-          value: 'couchbase',
-          name: '[BETA] Couchbase',
-        });
-        opts.push({
-          value: NEO4J,
-          name: '[BETA] Neo4j',
-        });
-        opts.push({
-          value: NO_DATABASE,
-          name: 'No database',
-        });
-        return opts;
+          opts.push({
+            value: NO_DATABASE,
+            name: 'No database',
+          });
+          return opts;
+        },
+        default: this.jhipsterConfigWithDefaults.databaseType,
       },
-      default: this.jhipsterConfigWithDefaults.databaseType,
-    },
-    {
-      when: response => response.databaseType === SQL,
-      type: 'list',
-      name: PROD_DATABASE_TYPE,
-      message: `Which ${chalk.yellow('*production*')} database would you like to use?`,
-      choices: answers => (answers.reactive ? R2DBC_DB_OPTIONS : SQL_DB_OPTIONS),
-      default: this.jhipsterConfigWithDefaults.prodDatabaseType,
-    },
-    {
-      when: response => response.databaseType === SQL,
-      type: 'list',
-      name: DEV_DATABASE_TYPE,
-      message: `Which ${chalk.yellow('*development*')} database would you like to use?`,
-      choices: response =>
-        [SQL_DB_OPTIONS.find(it => it.value === response.prodDatabaseType)].concat([
+      {
+        when: response => response.databaseType === SQL,
+        type: 'list',
+        name: PROD_DATABASE_TYPE,
+        message: `Which ${chalk.yellow('*production*')} database would you like to use?`,
+        choices: answers => (answers.reactive ? R2DBC_DB_OPTIONS : SQL_DB_OPTIONS),
+        default: this.jhipsterConfigWithDefaults.prodDatabaseType,
+      },
+      {
+        when: response => response.databaseType === SQL,
+        type: 'list',
+        name: DEV_DATABASE_TYPE,
+        message: `Which ${chalk.yellow('*development*')} database would you like to use?`,
+        choices: response =>
+          [SQL_DB_OPTIONS.find(it => it.value === response.prodDatabaseType)].concat([
+            {
+              value: H2_DISK,
+              name: 'H2 with disk-based persistence',
+            },
+            {
+              value: H2_MEMORY,
+              name: 'H2 with in-memory persistence',
+            },
+          ]) as any,
+        default: this.jhipsterConfigWithDefaults.devDatabaseType,
+      },
+      {
+        when: answers => !answers.reactive,
+        type: 'list',
+        name: CACHE_PROVIDER,
+        message: 'Which cache do you want to use? (Spring cache abstraction)',
+        choices: [
           {
-            value: H2_DISK,
-            name: 'H2 with disk-based persistence',
+            value: EHCACHE,
+            name: 'Ehcache (local cache, for a single node)',
           },
           {
-            value: H2_MEMORY,
-            name: 'H2 with in-memory persistence',
+            value: CAFFEINE,
+            name: 'Caffeine (local cache, for a single node)',
           },
-        ]),
-      default: this.jhipsterConfigWithDefaults.devDatabaseType,
-    },
-    {
-      when: answers => !answers.reactive,
-      type: 'list',
-      name: CACHE_PROVIDER,
-      message: 'Which cache do you want to use? (Spring cache abstraction)',
-      choices: [
-        {
-          value: EHCACHE,
-          name: 'Ehcache (local cache, for a single node)',
-        },
-        {
-          value: CAFFEINE,
-          name: 'Caffeine (local cache, for a single node)',
-        },
-        {
-          value: HAZELCAST,
-          name: 'Hazelcast (distributed cache, for multiple nodes, supports rate-limiting for gateway applications)',
-        },
-        {
-          value: INFINISPAN,
-          name: 'Infinispan (hybrid cache, for multiple nodes)',
-        },
-        {
-          value: MEMCACHED,
-          name: 'Memcached (distributed cache) - Warning, when using an SQL database, this will disable the Hibernate 2nd level cache!',
-        },
-        {
-          value: REDIS,
-          name: 'Redis (distributed cache)',
-        },
-        {
-          value: NO_CACHE_PROVIDER,
-          name: 'No cache - Warning, when using an SQL database, this will disable the Hibernate 2nd level cache!',
-        },
-      ],
-      default: this.jhipsterConfigWithDefaults.cacheProvider,
-    },
-    {
-      when: answers =>
-        ((answers.cacheProvider !== NO_CACHE_PROVIDER && answers.cacheProvider !== MEMCACHED) || applicationType === GATEWAY) &&
-        answers.databaseType === SQL &&
-        !answers.reactive,
-      type: 'confirm',
-      name: 'enableHibernateCache',
-      message: 'Do you want to use Hibernate 2nd level cache?',
-      default: this.jhipsterConfigWithDefaults.enableHibernateCache,
-    },
-  ];
-
-  await this.prompt(prompts, this.config);
+          {
+            value: HAZELCAST,
+            name: 'Hazelcast (distributed cache, for multiple nodes, supports rate-limiting for gateway applications)',
+          },
+          {
+            value: INFINISPAN,
+            name: 'Infinispan (hybrid cache, for multiple nodes)',
+          },
+          {
+            value: MEMCACHED,
+            name: 'Memcached (distributed cache) - Warning, when using an SQL database, this will disable the Hibernate 2nd level cache!',
+          },
+          {
+            value: REDIS,
+            name: 'Redis (distributed cache)',
+          },
+          {
+            value: NO_CACHE_PROVIDER,
+            name: 'No cache - Warning, when using an SQL database, this will disable the Hibernate 2nd level cache!',
+          },
+        ],
+        default: this.jhipsterConfigWithDefaults.cacheProvider,
+      },
+      {
+        when: answers =>
+          ((answers.cacheProvider !== NO_CACHE_PROVIDER && answers.cacheProvider !== MEMCACHED) || applicationType === GATEWAY) &&
+          answers.databaseType === SQL &&
+          !answers.reactive,
+        type: 'confirm',
+        name: 'enableHibernateCache',
+        message: 'Do you want to use Hibernate 2nd level cache?',
+        default: this.jhipsterConfigWithDefaults.enableHibernateCache,
+      },
+    ],
+    this.config,
+  );
 }
 
-export async function askForOptionalItems({ control }) {
+export async function askForOptionalItems(this: CoreGenerator, { control }) {
   if (control.existingProject && !this.options.askAnswered) return;
 
   const { applicationType, reactive, databaseType } = this.jhipsterConfigWithDefaults;
 
-  const choices = [];
+  const choices: any[] = [];
   const defaultChoice = [];
   if ([SQL, MONGODB, NEO4J].includes(databaseType)) {
     choices.push({
@@ -235,16 +237,14 @@ export async function askForOptionalItems({ control }) {
     value: 'enableSwaggerCodegen:true',
   });
 
-  const PROMPTS = {
-    type: 'checkbox',
-    name: 'serverSideOptions',
-    message: 'Which other technologies would you like to use?',
-    choices,
-    default: defaultChoice,
-  };
-
   if (choices.length > 0) {
-    await this.prompt(PROMPTS).then(answers => {
+    await this.prompt({
+      type: 'checkbox',
+      name: 'serverSideOptions',
+      message: 'Which other technologies would you like to use?',
+      choices,
+      default: defaultChoice,
+    }).then(answers => {
       this.jhipsterConfig.serverSideOptions = answers.serverSideOptions;
       this.jhipsterConfig.websocket = getOptionFromArray(answers.serverSideOptions, WEBSOCKET);
       this.jhipsterConfig.searchEngine = getOptionFromArray(answers.serverSideOptions, SEARCH_ENGINE);
@@ -258,7 +258,7 @@ export async function askForOptionalItems({ control }) {
   }
 }
 
-export async function askForServerTestOpts({ control }) {
+export async function askForServerTestOpts(this: CoreGenerator, { control }) {
   if (control.existingProject && this.options.askAnswered !== true) return;
 
   const answers = await this.prompt([
diff --git a/generators/spring-data-cassandra/cleanup.ts b/generators/spring-data-cassandra/cleanup.ts
index c1c3ffb5bc95..74e19e7ac1e0 100644
--- a/generators/spring-data-cassandra/cleanup.ts
+++ b/generators/spring-data-cassandra/cleanup.ts
@@ -1,4 +1,5 @@
-// @ts-nocheck
+import { asWritingTask } from '../base-application/support/task-type-inference.js';
+
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -17,7 +18,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-export default function cleanupCassandraFilesTask({ application }) {
+export default asWritingTask(function cleanupCassandraFilesTask({ application }) {
   if (this.isJhipsterVersionLessThan('4.3.0')) {
     this.removeFile(`${application.javaPackageSrcDir}config/cassandra/CustomZonedDateTimeCodec.java`);
   }
@@ -36,4 +37,4 @@ export default function cleanupCassandraFilesTask({ application }) {
   if (this.isJhipsterVersionLessThan('7.10.0')) {
     this.removeFile(`${application.javaPackageTestDir}config/TestContainersSpringContextCustomizerFactory.java`);
   }
-}
+});
diff --git a/generators/spring-data-cassandra/entity-files.ts b/generators/spring-data-cassandra/entity-files.ts
index dade56022780..7abc40aac3d9 100644
--- a/generators/spring-data-cassandra/entity-files.ts
+++ b/generators/spring-data-cassandra/entity-files.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -17,6 +16,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+import { asWritingEntitiesTask } from '../base-application/support/task-type-inference.js';
 import { SERVER_MAIN_RES_DIR } from '../generator-constants.js';
 import { javaMainPackageTemplatesBlock } from '../server/support/index.js';
 
@@ -55,11 +55,11 @@ export const entityFiles = {
 
 export function cleanupCassandraEntityFilesTask() {}
 
-export default async function writeEntityCassandraFiles({ application, entities }) {
+export default asWritingEntitiesTask(async function writeEntityCassandraFiles({ application, entities }) {
   for (const entity of entities.filter(entity => !entity.skipServer)) {
     await this.writeFiles({
       sections: entity.builtIn ? { domainFiles } : entityFiles,
       context: { ...application, ...entity },
     });
   }
-}
+});
diff --git a/generators/spring-data-cassandra/files.ts b/generators/spring-data-cassandra/files.ts
index c95935ad8702..015fdb6624ac 100644
--- a/generators/spring-data-cassandra/files.ts
+++ b/generators/spring-data-cassandra/files.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -17,6 +16,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+import { asWritingTask } from '../base-application/support/task-type-inference.js';
 import { SERVER_MAIN_RES_DIR, SERVER_MAIN_SRC_DIR, SERVER_TEST_SRC_DIR } from '../generator-constants.js';
 import { moveToJavaPackageSrcDir, moveToJavaPackageTestDir } from '../server/support/index.js';
 
@@ -64,9 +64,9 @@ export const cassandraFiles = {
   ],
 };
 
-export default async function writeCassandraFilesTask({ application }) {
+export default asWritingTask(async function writeCassandraFilesTask({ application }) {
   await this.writeFiles({
     sections: cassandraFiles,
     context: application,
   });
-}
+});
diff --git a/generators/spring-data-cassandra/generator.ts b/generators/spring-data-cassandra/generator.ts
index 4d4481be2b6a..30f300bd23a5 100644
--- a/generators/spring-data-cassandra/generator.ts
+++ b/generators/spring-data-cassandra/generator.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -95,7 +94,7 @@ export default class CassandraGenerator extends BaseApplicationGenerator {
           { groupId: 'org.apache.cassandra', artifactId: 'java-driver-mapper-runtime' },
           { groupId: 'commons-codec', artifactId: 'commons-codec' },
           { groupId: 'org.springframework.boot', artifactId: cassandraStarter },
-          { groupId: 'org.lz4', artifactId: 'lz4-java', version: javaDependencies['lz4-java'] },
+          { groupId: 'org.lz4', artifactId: 'lz4-java', version: javaDependencies!['lz4-java'] },
           { scope: 'test', groupId: 'org.testcontainers', artifactId: 'junit-jupiter' },
           { scope: 'test', groupId: 'org.testcontainers', artifactId: 'testcontainers' },
           { scope: 'test', groupId: 'org.testcontainers', artifactId: 'cassandra' },
diff --git a/generators/spring-data-couchbase/entity-files.ts b/generators/spring-data-couchbase/entity-files.ts
index 2b42c277fa85..85e08ebe50fc 100644
--- a/generators/spring-data-couchbase/entity-files.ts
+++ b/generators/spring-data-couchbase/entity-files.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -17,6 +16,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+import { asWritingEntitiesTask } from '../base-application/support/task-type-inference.js';
 import { SERVER_MAIN_RES_DIR } from '../generator-constants.js';
 import { javaMainPackageTemplatesBlock } from '../server/support/index.js';
 
@@ -64,7 +64,7 @@ export const entityFiles = {
   repositoryFiles,
 };
 
-export function cleanupCouchbaseEntityFilesTask({ application, entities }) {
+export const cleanupCouchbaseEntityFilesTask = asWritingEntitiesTask(function ({ application, entities }) {
   for (const entity of entities.filter(entity => !entity.builtIn && !entity.skipServer)) {
     if (this.isJhipsterVersionLessThan('7.6.1')) {
       this.removeFile(
@@ -72,13 +72,13 @@ export function cleanupCouchbaseEntityFilesTask({ application, entities }) {
       );
     }
   }
-}
+});
 
-export default async function writeEntityCouchbaseFiles({ application, entities }) {
+export default asWritingEntitiesTask(async function writeEntityCouchbaseFiles({ application, entities }) {
   for (const entity of entities.filter(entity => !entity.skipServer)) {
     await this.writeFiles({
       sections: entityFiles,
       context: { ...application, ...entity },
     });
   }
-}
+});
diff --git a/generators/spring-data-couchbase/files.ts b/generators/spring-data-couchbase/files.ts
index 0a65a0a91b56..4d3919482fff 100644
--- a/generators/spring-data-couchbase/files.ts
+++ b/generators/spring-data-couchbase/files.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -17,6 +16,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+import { asWritingTask } from '../base-application/support/task-type-inference.js';
 import { SERVER_MAIN_RES_DIR, SERVER_MAIN_SRC_DIR, SERVER_TEST_SRC_DIR } from '../generator-constants.js';
 import { moveToJavaPackageSrcDir, moveToJavaPackageTestDir } from '../server/support/index.js';
 
@@ -72,7 +72,7 @@ export const couchbaseFiles = {
   ],
 };
 
-export function cleanupCouchbaseFilesTask({ application }) {
+export const cleanupCouchbaseFilesTask = asWritingTask(function cleanupCouchbaseFilesTask({ application }) {
   if (this.isJhipsterVersionLessThan('7.1.1')) {
     this.removeFile(`${application.javaPackageSrcDir}repository/CustomReactiveCouchbaseRepository.java `);
     this.removeFile(`${application.javaPackageSrcDir}config/DatabaseConfigurationIT.java`);
@@ -93,11 +93,11 @@ export function cleanupCouchbaseFilesTask({ application }) {
     this.removeFile(`${application.srcMainResources}config/couchmove/changelog/V0.1__initial_setup/user__admin.json`);
     this.removeFile(`${application.srcMainResources}config/couchmove/changelog/V0.1__initial_setup/user__user.json`);
   }
-}
+});
 
-export default async function writeCouchbaseFilesTask({ application }) {
+export default asWritingTask(async function writeCouchbaseFilesTask({ application }) {
   await this.writeFiles({
     sections: couchbaseFiles,
     context: application,
   });
-}
+});
diff --git a/generators/spring-data-couchbase/generator.ts b/generators/spring-data-couchbase/generator.ts
index b4f3025bee17..cd7f982e08a9 100644
--- a/generators/spring-data-couchbase/generator.ts
+++ b/generators/spring-data-couchbase/generator.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -58,7 +57,7 @@ export default class CouchbaseGenerator extends BaseApplicationGenerator {
   get postWriting() {
     return this.asPostWritingTaskGroup({
       addTestSpringFactory({ source, application }) {
-        source.addTestSpringFactory({
+        source.addTestSpringFactory!({
           key: 'org.springframework.test.context.ContextCustomizerFactory',
           value: `${application.packageName}.config.TestContainersSpringContextCustomizerFactory`,
         });
diff --git a/generators/spring-data-elasticsearch/cleanup.ts b/generators/spring-data-elasticsearch/cleanup.ts
index 027854404aa3..ee49d1a7e69f 100644
--- a/generators/spring-data-elasticsearch/cleanup.ts
+++ b/generators/spring-data-elasticsearch/cleanup.ts
@@ -1,4 +1,5 @@
-// @ts-nocheck
+import { asWritingTask } from '../base-application/support/task-type-inference.js';
+
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -17,7 +18,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-export default function cleanupElasticsearchFilesTask({ application }) {
+export default asWritingTask(function cleanupElasticsearchFilesTask({ application }) {
   if (this.isJhipsterVersionLessThan('4.0.0')) {
     this.removeFile(`${application.javaPackageSrcDir}config/ElasticSearchConfiguration.java`);
   }
@@ -37,4 +38,4 @@ export default function cleanupElasticsearchFilesTask({ application }) {
       this.removeFile(`${application.javaPackageTestDir}config/ElasticsearchReactiveTestConfiguration.java`);
     }
   }
-}
+});
diff --git a/generators/spring-data-elasticsearch/entity-files.ts b/generators/spring-data-elasticsearch/entity-files.ts
index 43e48de9a5ef..27e7389ab72a 100644
--- a/generators/spring-data-elasticsearch/entity-files.ts
+++ b/generators/spring-data-elasticsearch/entity-files.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -17,6 +16,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+import { asWritingEntitiesTask } from '../base-application/support/task-type-inference.js';
 import { javaMainPackageTemplatesBlock } from '../server/support/index.js';
 
 export const entityFiles = {
@@ -36,11 +36,11 @@ export const entityFiles = {
 
 export function cleanupElasticsearchEntityFilesTask() {}
 
-export default async function writeEntityElasticsearchFiles({ application, entities }) {
-  for (const entity of entities.filter(entity => !entity.skipServer && entity.searchEngineElasticsearch)) {
+export default asWritingEntitiesTask(async function writeEntityElasticsearchFiles({ application, entities }) {
+  for (const entity of entities.filter(entity => !entity.skipServer && (entity as any).searchEngineElasticsearch)) {
     await this.writeFiles({
       sections: entityFiles,
       context: { ...application, ...entity },
     });
   }
-}
+});
diff --git a/generators/spring-data-elasticsearch/files.ts b/generators/spring-data-elasticsearch/files.ts
index b5eb89dc3d85..8e1a144346da 100644
--- a/generators/spring-data-elasticsearch/files.ts
+++ b/generators/spring-data-elasticsearch/files.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -17,6 +16,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+import { asWritingTask } from '../base-application/support/task-type-inference.js';
 import { SERVER_MAIN_SRC_DIR, SERVER_TEST_SRC_DIR } from '../generator-constants.js';
 import { moveToJavaPackageSrcDir, moveToJavaPackageTestDir } from '../server/support/index.js';
 
@@ -50,9 +50,9 @@ export const files = {
   ],
 };
 
-export default async function writeElasticsearchFilesTask({ application }) {
+export default asWritingTask(async function writeElasticsearchFilesTask({ application }) {
   await this.writeFiles({
     sections: files,
     context: application,
   });
-}
+});
diff --git a/generators/spring-data-elasticsearch/generator.ts b/generators/spring-data-elasticsearch/generator.ts
index 9fda374e08b0..22ba3c244243 100644
--- a/generators/spring-data-elasticsearch/generator.ts
+++ b/generators/spring-data-elasticsearch/generator.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -74,7 +73,7 @@ export default class ElasticsearchGenerator extends BaseApplicationGenerator {
   get postWriting() {
     return this.asPostWritingTaskGroup({
       addTestSpringFactory({ source, application }) {
-        source.addTestSpringFactory({
+        source.addTestSpringFactory!({
           key: 'org.springframework.test.context.ContextCustomizerFactory',
           value: `${application.packageName}.config.TestContainersSpringContextCustomizerFactory`,
         });
diff --git a/generators/spring-data-mongodb/cleanup.ts b/generators/spring-data-mongodb/cleanup.ts
index 58d09c437c97..10cbaf5a8b79 100644
--- a/generators/spring-data-mongodb/cleanup.ts
+++ b/generators/spring-data-mongodb/cleanup.ts
@@ -1,4 +1,5 @@
-// @ts-nocheck
+import { asWritingTask } from '../base-application/support/task-type-inference.js';
+
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -17,11 +18,11 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-export default function cleanupMongodbFilesTask({ application }) {
+export default asWritingTask(function cleanupMongodbFilesTask({ application }) {
   if (this.isJhipsterVersionLessThan('3.10.0')) {
     this.removeFile(`${application.javaPackageSrcDir}config/CloudMongoDbConfiguration.java`);
   }
   if (this.isJhipsterVersionLessThan('7.7.1')) {
     this.removeFile(`${application.javaPackageTestDir}MongoDbTestContainerExtension.java`);
   }
-}
+});
diff --git a/generators/spring-data-mongodb/entity-files.ts b/generators/spring-data-mongodb/entity-files.ts
index 5587219abfa4..214a9e2db72c 100644
--- a/generators/spring-data-mongodb/entity-files.ts
+++ b/generators/spring-data-mongodb/entity-files.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -17,6 +16,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+import { asWritingEntitiesTask } from '../base-application/support/task-type-inference.js';
 import { javaMainPackageTemplatesBlock } from '../server/support/index.js';
 
 const domainFiles = [
@@ -47,11 +47,11 @@ export const entityFiles = {
 
 export function cleanupMongodbEntityFilesTask() {}
 
-export default async function writeEntityMongodbFiles({ application, entities }) {
+export default asWritingEntitiesTask(async function writeEntityMongodbFiles({ application, entities }) {
   for (const entity of entities.filter(entity => !entity.skipServer)) {
     await this.writeFiles({
       sections: entityFiles,
       context: { ...application, ...entity },
     });
   }
-}
+});
diff --git a/generators/spring-data-mongodb/files.ts b/generators/spring-data-mongodb/files.ts
index a8cf0cbff7f3..a541487b9b37 100644
--- a/generators/spring-data-mongodb/files.ts
+++ b/generators/spring-data-mongodb/files.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -17,6 +16,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+import { asWritingTask } from '../base-application/support/task-type-inference.js';
 import { SERVER_MAIN_SRC_DIR, SERVER_TEST_SRC_DIR } from '../generator-constants.js';
 import { moveToJavaPackageSrcDir, moveToJavaPackageTestDir } from '../server/support/index.js';
 
@@ -41,9 +41,9 @@ export const mongoDbFiles = {
   ],
 };
 
-export default async function writeMongodbFilesTask({ application }) {
+export default asWritingTask(async function writeMongodbFilesTask({ application }) {
   await this.writeFiles({
     sections: mongoDbFiles,
     context: application,
   });
-}
+});
diff --git a/generators/spring-data-mongodb/generator.ts b/generators/spring-data-mongodb/generator.ts
index 006f9fd388f6..22d66145d9df 100644
--- a/generators/spring-data-mongodb/generator.ts
+++ b/generators/spring-data-mongodb/generator.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -59,7 +58,7 @@ export default class MongoDBGenerator extends BaseApplicationGenerator {
   get postWriting() {
     return this.asPostWritingTaskGroup({
       addTestSpringFactory({ source, application }) {
-        source.addTestSpringFactory({
+        source.addTestSpringFactory!({
           key: 'org.springframework.test.context.ContextCustomizerFactory',
           value: `${application.packageName}.config.TestContainersSpringContextCustomizerFactory`,
         });
@@ -67,7 +66,7 @@ export default class MongoDBGenerator extends BaseApplicationGenerator {
       addDependencies({ application, source }) {
         const { reactive, javaDependencies } = application;
         source.addJavaDependencies?.([
-          { groupId: 'io.mongock', artifactId: 'mongock-bom', type: 'pom', version: javaDependencies['mongock-bom'], scope: 'import' },
+          { groupId: 'io.mongock', artifactId: 'mongock-bom', type: 'pom', version: javaDependencies!['mongock-bom'], scope: 'import' },
           { groupId: 'io.mongock', artifactId: 'mongock-springboot-v3' },
           { groupId: 'org.springframework.boot', artifactId: `spring-boot-starter-data-mongodb${reactive ? '-reactive' : ''}` },
           { groupId: 'io.mongock', artifactId: reactive ? 'mongodb-reactive-driver' : 'mongodb-springdata-v4-driver' },
@@ -88,7 +87,7 @@ export default class MongoDBGenerator extends BaseApplicationGenerator {
       blockhound({ application, source }) {
         const { reactive } = application;
         if (reactive) {
-          source.addAllowBlockingCallsInside({ classPath: 'com.mongodb.internal.Locks', method: 'checkedWithLock' });
+          source.addAllowBlockingCallsInside!({ classPath: 'com.mongodb.internal.Locks', method: 'checkedWithLock' });
         }
       },
     });
diff --git a/generators/spring-data-relational/entity-files.ts b/generators/spring-data-relational/entity-files.ts
index d39b6b01aee1..7147d7dbcb63 100644
--- a/generators/spring-data-relational/entity-files.ts
+++ b/generators/spring-data-relational/entity-files.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -17,6 +16,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+import { asWritingEntitiesTask } from '../base-application/support/task-type-inference.js';
 import { javaMainPackageTemplatesBlock } from '../java/support/index.js';
 
 const domainFiles = [
@@ -89,7 +89,7 @@ const sqlFiles = {
 
 export function cleanupEntitiesTask() {}
 
-export default async function writeEntitiesTask({ application, entities }) {
+export default asWritingEntitiesTask(async function writeEntitiesTask({ application, entities }) {
   for (const entity of entities.filter(entity => !entity.skipServer)) {
     if (entity.builtInUser) {
       await this.writeFiles({
@@ -109,4 +109,4 @@ export default async function writeEntitiesTask({ application, entities }) {
       });
     }
   }
-}
+});
diff --git a/generators/spring-data-relational/generator.ts b/generators/spring-data-relational/generator.ts
index 01cb766e3a04..759b005dbf14 100644
--- a/generators/spring-data-relational/generator.ts
+++ b/generators/spring-data-relational/generator.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -18,11 +17,11 @@
  * limitations under the License.
  */
 
+import assert from 'assert';
 import BaseApplicationGenerator from '../base-application/index.js';
 import { GENERATOR_LIQUIBASE } from '../generator-list.js';
 import { isReservedTableName } from '../../jdl/jhipster/reserved-keywords.js';
 import { databaseTypes } from '../../jdl/jhipster/index.js';
-import type { GeneratorDefinition as SpringBootGeneratorDefinition } from '../server/index.js';
 import writeTask from './files.js';
 import cleanupTask from './cleanup.js';
 import writeEntitiesTask, { cleanupEntitiesTask } from './entity-files.js';
@@ -31,7 +30,7 @@ import { getDatabaseDriverForDatabase, getDatabaseTypeMavenDefinition, getH2Mave
 
 const { SQL } = databaseTypes;
 
-export default class SqlGenerator extends BaseApplicationGenerator<SpringBootGeneratorDefinition> {
+export default class SqlGenerator extends BaseApplicationGenerator {
   async beforeQueue() {
     if (!this.fromBlueprint) {
       await this.composeWithBlueprints();
@@ -61,7 +60,7 @@ export default class SqlGenerator extends BaseApplicationGenerator<SpringBootGen
         anyApp.devDatabaseExtraOptions = getDBCExtraOption(anyApp.devDatabaseType);
         anyApp.prodDatabaseExtraOptions = getDBCExtraOption(anyApp.prodDatabaseType);
 
-        anyApp.prodDatabaseDriver = getDatabaseDriverForDatabase(application.prodDatabaseType);
+        anyApp.prodDatabaseDriver = getDatabaseDriverForDatabase(application.prodDatabaseType!);
       },
     });
   }
@@ -140,6 +139,9 @@ export default class SqlGenerator extends BaseApplicationGenerator<SpringBootGen
       },
       addDependencies({ application, source }) {
         const { reactive, javaDependencies, packageFolder } = application;
+        assert.ok(javaDependencies, 'javaDependencies is required');
+        assert.ok(packageFolder, 'packageFolder is required');
+
         const { prodDatabaseType, devDatabaseTypeH2Any } = application as any;
         const dbDefinitions = getDatabaseTypeMavenDefinition(prodDatabaseType, {
           inProfile: devDatabaseTypeH2Any ? 'prod' : undefined,
diff --git a/generators/upgrade/generator.ts b/generators/upgrade/generator.ts
index 6da9cef86906..f464cc2cb77e 100644
--- a/generators/upgrade/generator.ts
+++ b/generators/upgrade/generator.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -50,8 +49,9 @@ export default class UpgradeGenerator extends BaseGenerator {
   actualApplicationBranch;
   silent;
   applyConfig;
-  spawnStdio = 'inherit';
+  spawnStdio: 'inherit' | 'ignore' | 'pipe' | 'overlapped' = 'inherit';
   executable;
+  verbose!: boolean;
 
   async beforeQueue() {
     if (!this.fromBlueprint) {
@@ -177,7 +177,7 @@ export default class UpgradeGenerator extends BaseGenerator {
           // Make sure the node_modules is up to date
           await this.spawnCommand('npm install', { stdio: this.spawnStdio });
 
-          const customCliOptions = [];
+          const customCliOptions: string[] = [];
           if (this.getPackageJsonVersion() === '7.9.4') {
             customCliOptions.push('--with-entities');
           }
@@ -323,7 +323,7 @@ export default class UpgradeGenerator extends BaseGenerator {
     const generatorOptions = { ...inheritedOptions, ...DEFAULT_NON_INTERATIVE_OPTIONS };
 
     // We should not reuse sharedData at non interactive runs
-    delete generatorOptions.sharedData;
+    delete (generatorOptions as any).sharedData;
 
     const envBuilder = await this.createEnvBuilder(envOptions);
     const env = envBuilder.getEnvironment();
diff --git a/generators/vue/cleanup.ts b/generators/vue/cleanup.ts
index 67c461885b12..87a87e4b9b92 100644
--- a/generators/vue/cleanup.ts
+++ b/generators/vue/cleanup.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -18,11 +17,13 @@
  * limitations under the License.
  */
 
+import { asWritingTask } from '../base-application/support/task-type-inference.js';
+
 /**
  * Removes files that where generated in previous JHipster versions and therefore
  * need to be removed.
  */
-export default function cleanupOldFilesTask({ application } = {}) {
+export default asWritingTask(function cleanupOldFilesTask({ application }) {
   if (this.isJhipsterVersionLessThan('7.0.0-beta.0')) {
     this.removeFile(`${application.clientSrcDir}app/admin/audits/audits.component.ts`);
     this.removeFile(`${application.clientSrcDir}app/admin/audits/audits.service.ts`);
@@ -107,4 +108,4 @@ export default function cleanupOldFilesTask({ application } = {}) {
     this.removeFile('vite.config.ts');
     this.removeFile('vitest.config.ts');
   }
-}
+});
diff --git a/generators/vue/entity-files-vue.ts b/generators/vue/entity-files-vue.ts
index e52531b2820c..df21f9861e0a 100644
--- a/generators/vue/entity-files-vue.ts
+++ b/generators/vue/entity-files-vue.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -17,7 +16,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-import { asPostWritingEntitiesTask, asWritingEntitiesTask, asWritingTask } from '../base-application/support/index.js';
+import { asPostWritingEntitiesTask, asWritingEntitiesTask } from '../base-application/support/index.js';
 import { clientApplicationTemplatesBlock } from '../client/support/index.js';
 
 export const entityFiles = {
@@ -78,10 +77,10 @@ export const postWriteEntityFiles = asPostWritingEntitiesTask(async function pos
         readOnly,
         entityClassPlural,
         i18nKeyPrefix,
-        pageTitle = enableTranslation ? `${i18nKeyPrefix}.home.title` : entityClassPlural,
       } = entity;
+      const pageTitle = ((entity as any).pageTitle ?? enableTranslation) ? `${i18nKeyPrefix}.home.title` : entityClassPlural;
 
-      this.addEntityToModule(
+      (this as any).addEntityToModule(
         entityInstance,
         entityClass,
         entityAngularName,
@@ -92,12 +91,17 @@ export const postWriteEntityFiles = asPostWritingEntitiesTask(async function pos
         readOnly,
         pageTitle,
       );
-      this.addEntityToMenu(entity.entityPage, application.enableTranslation, entity.entityTranslationKeyMenu, entity.entityClassHumanized);
+      (this as any).addEntityToMenu(
+        entity.entityPage,
+        application.enableTranslation,
+        entity.entityTranslationKeyMenu,
+        entity.entityClassHumanized,
+      );
     }
   }
 });
 
-export const cleanupEntitiesFiles = asWritingTask(function cleanupEntitiesFiles({ control, application, entities }) {
+export const cleanupEntitiesFiles = asWritingEntitiesTask(function cleanupEntitiesFiles({ control, application, entities }) {
   for (const entity of (control.filterEntitiesForClient ?? (entities => entities))(entities).filter(entity => !entity.builtInUser)) {
     const { entityFolderName, entityFileName } = entity;
     if (this.isJhipsterVersionLessThan('8.0.0-beta.3')) {
diff --git a/generators/vue/files-vue.ts b/generators/vue/files-vue.ts
index 079e6018c8da..e70af0479916 100644
--- a/generators/vue/files-vue.ts
+++ b/generators/vue/files-vue.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -18,7 +17,7 @@
  * limitations under the License.
  */
 
-import { asWritingTask } from '../base-application/support/index.js';
+import { asWritingEntitiesTask, asWritingTask } from '../base-application/support/index.js';
 import { clientApplicationTemplatesBlock, clientRootTemplatesBlock, clientSrcTemplatesBlock } from '../client/support/files.js';
 
 export const vueFiles = {
@@ -303,7 +302,7 @@ export const writeFiles = asWritingTask(async function writeFiles({ application
   });
 });
 
-export const writeEntitiesFiles = asWritingTask(async function writeEntitiesFiles({ application, entities }) {
+export const writeEntitiesFiles = asWritingEntitiesTask(async function writeEntitiesFiles({ application, entities }) {
   entities = entities.filter(entity => !entity.skipClient && !entity.builtInUser);
   await this.writeFiles({
     sections: entitiesFiles,
diff --git a/generators/vue/generator.ts b/generators/vue/generator.ts
index 7c17526fca02..2ce14d7dedf1 100644
--- a/generators/vue/generator.ts
+++ b/generators/vue/generator.ts
@@ -1,4 +1,3 @@
-// @ts-nocheck
 /**
  * Copyright 2013-2024 the original author or authors from the JHipster project.
  *
@@ -17,7 +16,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-import { relative } from 'path';
+import assert from 'node:assert';
 import chalk from 'chalk';
 import { isFileStateModified } from 'mem-fs-editor/state';
 import { camelCase, startCase } from 'lodash-es';
@@ -109,24 +108,14 @@ export default class VueGenerator extends BaseApplicationGenerator {
     return this.delegateTasksToBlueprint(() => this.preparing);
   }
 
-  get preparingEachEntity() {
-    return this.asPreparingEachEntityTaskGroup({
-      prepareEntityForTemplates({ entity }) {
-        // Can be dropped if tests are moved near implementation
-        entity.relativeToEntityFolderName = relative(entity.entityFolderName, '.');
-      },
-    });
-  }
-
-  get [BaseApplicationGenerator.PREPARING_EACH_ENTITY]() {
-    return this.delegateTasksToBlueprint(() => this.preparingEachEntity);
-  }
-
   get default() {
     return this.asDefaultTaskGroup({
       async queueTranslateTransform({ control, application }) {
         const { enableTranslation, clientSrcDir } = application;
         const { getWebappTranslation } = control;
+
+        assert.ok(getWebappTranslation, 'getWebappTranslation is required');
+
         this.queueTransformStream(
           {
             name: 'translating vue application',
@@ -187,11 +176,11 @@ export default class VueGenerator extends BaseApplicationGenerator {
     return this.asPostWritingTaskGroup({
       addIndexAsset({ source, application }) {
         if (application.microfrontend) return;
-        source.addExternalResourceToRoot({
+        source.addExternalResourceToRoot!({
           resource: '<script>const global = globalThis;</script>',
           comment: 'Workaround https://github.com/axios/axios/issues/5622',
         });
-        source.addExternalResourceToRoot({
+        source.addExternalResourceToRoot!({
           resource: `<script type="module" src="./app/${application.microfrontend ? 'index.ts' : 'main.ts'}"></script>`,
           comment: 'Load vue main',
         });
@@ -263,17 +252,7 @@ export default class VueGenerator extends BaseApplicationGenerator {
    * @param {boolean} readOnly - If the entity is read-only or not
    * @param {string} pageTitle - The translation key or the text for the page title in the browser
    */
-  addEntityToModule(
-    entityInstance = this.entityInstance,
-    entityClass = this.entityClass,
-    entityName = this.entityAngularName,
-    entityFolderName = this.entityFolderName,
-    entityFileName = this.entityFileName,
-    _entityUrl = this.entityUrl,
-    _microserviceName = this.microserviceName,
-    readOnly = this.readOnly,
-    _pageTitle = this.enableTranslation ? `${this.i18nKeyPrefix}.home.title` : this.entityClassPlural,
-  ) {
+  addEntityToModule(entityInstance, entityClass, entityName, entityFolderName, entityFileName, _entityUrl, _microserviceName, readOnly) {
     this.needleApi.clientVue.addEntityToRouterImport(entityName, entityFileName, entityFolderName, readOnly);
     this.needleApi.clientVue.addEntityToRouter(entityInstance, entityName, entityFileName, readOnly);
     this.needleApi.clientVue.addEntityServiceToEntitiesComponentImport(entityName, entityClass, entityFileName, entityFolderName);
diff --git a/generators/workspaces/generator.ts b/generators/workspaces/generator.ts
index 4aa3afcdb816..a7f796abc523 100644
--- a/generators/workspaces/generator.ts
+++ b/generators/workspaces/generator.ts
@@ -25,12 +25,6 @@ import { GENERATOR_ANGULAR, GENERATOR_BOOTSTRAP_WORKSPACES, GENERATOR_GIT } from
 import BaseWorkspacesGenerator from '../base-workspaces/index.js';
 import { packageJson } from '../../lib/index.js';
 
-/**
- * Base class for a generator that can be extended through a blueprint.
- *
- * @class
- * @extends {BaseWorkspacesGenerator}
- */
 export default class WorkspacesGenerator extends BaseWorkspacesGenerator {
   workspaces;
   generateApplications;
@@ -38,6 +32,7 @@ export default class WorkspacesGenerator extends BaseWorkspacesGenerator {
   entrypointGenerator;
 
   generateWorkspaces;
+  workspacesConfig!: Record<string, any>;
 
   async beforeQueue() {
     if (!this.fromBlueprint) {
diff --git a/jdl/basic-types/json-entity.ts b/jdl/basic-types/json-entity.ts
index abcb72d24697..3c87f796e974 100644
--- a/jdl/basic-types/json-entity.ts
+++ b/jdl/basic-types/json-entity.ts
@@ -45,7 +45,7 @@ class JSONEntity {
    *        - clientRootFolder
    */
   constructor(args: Partial<JSONEntity>) {
-    if (!args || !args.entityName) {
+    if (!args?.entityName) {
       throw new Error('At least an entity name must be passed.');
     }
     const merged: Partial<JSONEntity> = merge(getDefaults(args.entityName), args);
diff --git a/jdl/built-in-options/binary-options.ts b/jdl/built-in-options/binary-options.ts
index 703e12034187..f27cbc0f4b47 100644
--- a/jdl/built-in-options/binary-options.ts
+++ b/jdl/built-in-options/binary-options.ts
@@ -59,7 +59,7 @@ const DefaultValues = {
 };
 
 function getOptionName(optionValue): string | undefined {
-  return optionNames.find(optionName => Values[optionName] && Values[optionName][optionValue]);
+  return optionNames.find(optionName => Values[optionName]?.[optionValue]);
 }
 
 const OptionValues = {
diff --git a/jdl/converters/parsed-jdl-to-jdl-object/option-converter.ts b/jdl/converters/parsed-jdl-to-jdl-object/option-converter.ts
index 0087833f2996..85a1f9e01287 100644
--- a/jdl/converters/parsed-jdl-to-jdl-object/option-converter.ts
+++ b/jdl/converters/parsed-jdl-to-jdl-object/option-converter.ts
@@ -49,7 +49,7 @@ function convertUnaryOptions(parsedOptions: Record<string, ParsedJDLOption>): JD
   const convertedUnaryOptions: JDLUnaryOption[] = [];
   unaryOptions.forEach((unaryOptionName: string) => {
     const parsedUnaryOption = parsedOptions[unaryOptionName];
-    if (!parsedUnaryOption || !parsedUnaryOption.list || parsedUnaryOption.list.length === 0) {
+    if (!parsedUnaryOption?.list || parsedUnaryOption.list.length === 0) {
       return;
     }
     convertedUnaryOptions.push(
diff --git a/jdl/exporters/jhipster-entity-exporter.ts b/jdl/exporters/jhipster-entity-exporter.ts
index 868845088386..12d7b8474159 100644
--- a/jdl/exporters/jhipster-entity-exporter.ts
+++ b/jdl/exporters/jhipster-entity-exporter.ts
@@ -52,7 +52,7 @@ export default function exportEntities(passedConfiguration: JhipsterJSONJDLExpor
 }
 
 function init(passedConfiguration: JhipsterJSONJDLExporterWrapper) {
-  if (!passedConfiguration || !passedConfiguration.entities) {
+  if (!passedConfiguration?.entities) {
     throw new Error('Entities have to be passed to be exported.');
   }
   configuration = passedConfiguration;
diff --git a/jdl/jdl-importer.ts b/jdl/jdl-importer.ts
index f1fdda310c45..ada8eff6697d 100644
--- a/jdl/jdl-importer.ts
+++ b/jdl/jdl-importer.ts
@@ -170,7 +170,7 @@ function checkForErrors(jdlObject: JDLObject, configuration, logger = console) {
     let applicationType = configuration.applicationType;
     let databaseType = configuration.databaseType;
     let blueprints = configuration.blueprints;
-    if (application && application[GENERATOR_JHIPSTER]) {
+    if (application?.[GENERATOR_JHIPSTER]) {
       if (applicationType === undefined) {
         applicationType = application[GENERATOR_JHIPSTER].applicationType;
       }
@@ -203,7 +203,7 @@ function importOnlyEntities(jdlObject: JDLObject, configuration) {
   if (!configuration.application && doesFileExist('.yo-rc.json')) {
     application = readJSONFile('.yo-rc.json');
   }
-  if (application && application[GENERATOR_JHIPSTER]) {
+  if (application?.[GENERATOR_JHIPSTER]) {
     if (applicationType === undefined) {
       applicationType = application[GENERATOR_JHIPSTER].applicationType;
     }
diff --git a/jdl/linters/entity-linter.ts b/jdl/linters/entity-linter.ts
index c86769f2e231..8fd2255f8181 100644
--- a/jdl/linters/entity-linter.ts
+++ b/jdl/linters/entity-linter.ts
@@ -76,7 +76,7 @@ function checkForDuplicatedEntities(entityDeclarations: EntityDeclaration[]) {
 
 function checkForUselessEntityBraces(entityDeclaration: EntityDeclaration) {
   const entityBody = entityDeclaration.children.entityBody;
-  const nextTokensAfterRelationshipType = entityBody && entityBody[0].children;
+  const nextTokensAfterRelationshipType = entityBody?.[0].children;
   const onlyCurlyBracesAsRelationshipBody = entityBody && Object.keys(nextTokensAfterRelationshipType).length === 2;
   if (onlyCurlyBracesAsRelationshipBody) {
     issues.push(
diff --git a/jdl/linters/issues/abstract-issue.ts b/jdl/linters/issues/abstract-issue.ts
index 59551a206955..2ad37fbe0560 100644
--- a/jdl/linters/issues/abstract-issue.ts
+++ b/jdl/linters/issues/abstract-issue.ts
@@ -23,7 +23,7 @@ export default class AbstractIssue {
   ruleName: string;
 
   constructor(args: AbstractIssueArgs) {
-    if (!args || !args.ruleName) {
+    if (!args?.ruleName) {
       throw new Error('An issue must at least have a rule name.');
     }
     this.ruleName = args.ruleName;
diff --git a/jdl/linters/jdl-linter.ts b/jdl/linters/jdl-linter.ts
index 876b7e0be44a..9a3c7bc21350 100644
--- a/jdl/linters/jdl-linter.ts
+++ b/jdl/linters/jdl-linter.ts
@@ -130,7 +130,7 @@ function getAllFieldDeclarations(entityDeclarations: EntityDeclaration[]) {
 
 function getFieldDeclarationsFromEntity(entityDeclaration: EntityDeclaration) {
   const entityBody = entityDeclaration.children.entityBody;
-  const entityFields = entityBody && entityBody[0].children.fieldDeclaration;
+  const entityFields = entityBody?.[0].children.fieldDeclaration;
   if (entityBody && entityFields) {
     return entityFields;
   }
diff --git a/jdl/linters/rule.ts b/jdl/linters/rule.ts
index 17424969c2d5..af4e892c57f1 100644
--- a/jdl/linters/rule.ts
+++ b/jdl/linters/rule.ts
@@ -39,7 +39,7 @@ export default class Rule {
    *               - comment: a possible comment for the rule
    */
   constructor(args: { name: any; level: RuleLevel; comment: any }) {
-    if (!args || !args.name) {
+    if (!args?.name) {
       throw new Error('A rule must at least have a name.');
     }
     const merged = merge(defaults(), args) as any;
diff --git a/jdl/matchers/entity-matcher.ts b/jdl/matchers/entity-matcher.ts
index 948f5ab90e7f..ffdf2dfd959d 100644
--- a/jdl/matchers/entity-matcher.ts
+++ b/jdl/matchers/entity-matcher.ts
@@ -1,3 +1,3 @@
 export default function matchEntity(jdlEntity) {
-  return jdlEntity && jdlEntity.name && jdlEntity.fields;
+  return jdlEntity?.name && jdlEntity.fields;
 }
diff --git a/jdl/matchers/field-matcher.ts b/jdl/matchers/field-matcher.ts
index 5d328084fa1f..50d9b50b6411 100644
--- a/jdl/matchers/field-matcher.ts
+++ b/jdl/matchers/field-matcher.ts
@@ -1,3 +1,3 @@
 export default function matchField(jdlField) {
-  return jdlField && jdlField.name && jdlField.type && jdlField.validations && jdlField.options;
+  return jdlField?.name && jdlField.type && jdlField.validations && jdlField.options;
 }
diff --git a/jdl/models/jdl-deployment.ts b/jdl/models/jdl-deployment.ts
index 710a3da933c8..180fc0cf90f4 100644
--- a/jdl/models/jdl-deployment.ts
+++ b/jdl/models/jdl-deployment.ts
@@ -39,7 +39,7 @@ export default class JDLDeployment {
   clusteredDbApps?: string[];
 
   constructor(args: ParsedJDLDeployment) {
-    if (!args || !args.deploymentType) {
+    if (!args?.deploymentType) {
       throw new Error('The deploymentType is mandatory to create a deployment.');
     }
     const merged = merge(defaults(args.deploymentType), args);
diff --git a/jdl/models/jdl-object.ts b/jdl/models/jdl-object.ts
index 517d6198757a..fab49a86e46c 100644
--- a/jdl/models/jdl-object.ts
+++ b/jdl/models/jdl-object.ts
@@ -221,7 +221,7 @@ export default class JDLObject {
   }
 
   addOption(option: AbstractJDLOption): void {
-    if (!option || !option.getType) {
+    if (!option?.getType) {
       throw new Error("Can't add nil option.");
     }
     this.options.addOption(option);
diff --git a/jdl/models/jdl-options.ts b/jdl/models/jdl-options.ts
index b3d01fdcd7d8..cb32f1996de0 100644
--- a/jdl/models/jdl-options.ts
+++ b/jdl/models/jdl-options.ts
@@ -30,7 +30,7 @@ export default class JDLOptions {
   }
 
   addOption(option: AbstractJDLOption): void {
-    if (!option || !option.getType) {
+    if (!option?.getType) {
       throw new Error("Can't add nil option.");
     }
     if (option.getType() === 'UNARY') {
diff --git a/jdl/parsing/validator.ts b/jdl/parsing/validator.ts
index df8646f34ed9..1dbad7e47505 100644
--- a/jdl/parsing/validator.ts
+++ b/jdl/parsing/validator.ts
@@ -184,7 +184,7 @@ export default function performAdditionalSyntaxChecks(cst, runtime: JDLRuntime)
       // A Boolean is allowed as a single name as it is a keyword.
       // Other keywords do not need special handling as they do not explicitly appear in the rule
       // of config values
-      if (fqnCstNode.tokenType && fqnCstNode.tokenType.CATEGORIES.includes(this.tokens.BOOLEAN)) {
+      if (fqnCstNode.tokenType?.CATEGORIES.includes(this.tokens.BOOLEAN)) {
         return false;
       }
 
@@ -305,7 +305,7 @@ export default function performAdditionalSyntaxChecks(cst, runtime: JDLRuntime)
         throw Error(`Got an invalid deployment config property: '${propertyName}'.`);
       }
 
-      if (this.checkExpectedValueType(validation.type, value) && validation.pattern && value.children && value.children.NAME) {
+      if (this.checkExpectedValueType(validation.type, value) && validation.pattern && value.children?.NAME) {
         value.children.NAME.forEach(nameTok => this.checkNameSyntax(nameTok, validation.pattern, validation.msg));
       } else if (value.image && validation.pattern) {
         this.checkNameSyntax(value, validation.pattern, validation.msg);
diff --git a/jdl/utils/format-utils.ts b/jdl/utils/format-utils.ts
index 231119c33725..b07247356bc4 100644
--- a/jdl/utils/format-utils.ts
+++ b/jdl/utils/format-utils.ts
@@ -29,7 +29,7 @@ export default function formatComment(comment?: string): string | undefined {
     return undefined;
   }
   const parts = comment.trim().split('\n');
-  if (parts.length === 1 && parts[0].indexOf('*') !== 0) {
+  if (parts.length === 1 && !parts[0].startsWith('*')) {
     return parts[0];
   }
   return parts.reduce((previousValue, currentValue) => {
diff --git a/jdl/validators/jdl-with-application-validator.ts b/jdl/validators/jdl-with-application-validator.ts
index ea289708d44f..17527e090550 100644
--- a/jdl/validators/jdl-with-application-validator.ts
+++ b/jdl/validators/jdl-with-application-validator.ts
@@ -71,7 +71,7 @@ export default function createValidator(jdlObject: JDLObject, logger: any = cons
   function checkForNamespaceConfigErrors(jdlApplication: JDLApplication): void {
     jdlApplication.forEachNamespaceConfiguration(config => {
       const blueprints: JDLApplicationConfigurationOption<string[]> | undefined = jdlApplication.config.getOption('blueprints');
-      if (!blueprints || !blueprints.getValue().some(blueprint => blueprint === config.namespace)) {
+      if (!blueprints?.getValue().some(blueprint => blueprint === config.namespace)) {
         throw new Error(`Blueprint namespace config ${config.namespace} requires the blueprint ${config.namespace}`);
       }
     });
diff --git a/lib/types/application/entity.d.ts b/lib/types/application/entity.d.ts
index b133a359c0de..8716a2ec3cfa 100644
--- a/lib/types/application/entity.d.ts
+++ b/lib/types/application/entity.d.ts
@@ -30,21 +30,24 @@ type AngularEntity = {
   entityAngularReadAuthorities?: string;
 };
 
+export type PrimaryKey<F extends BaseField = Field> = {
+  name: string;
+  fields: F[];
+  derivedFields: F[];
+  type: string;
+  composite: boolean;
+  derived: boolean;
+  javaValueGenerator?: string;
+  javaBuildSpecification?: string;
+};
+
 export interface Entity<F extends BaseField = Field, R extends BaseRelationship = never>
   extends Omit<Required<BaseEntity<F>>, 'relationships'>,
     SpringEntity,
     AngularEntity {
   relationships: (IsNever<R> extends true ? Relationship<Omit<Entity, 'relationships'>> : R)[];
 
-  primaryKey?: {
-    fields: F[];
-    derivedFields: F[];
-    type: string;
-    composite: boolean;
-    derived: boolean;
-    javaValueGenerator?: string;
-    javaBuildSpecification?: string;
-  };
+  primaryKey?: PrimaryKey<F>;
 
   builtIn?: boolean;
   builtInUser?: boolean;
@@ -62,6 +65,7 @@ export interface Entity<F extends BaseField = Field, R extends BaseRelationship
   entityTableName: string;
   entityNamePlural: string;
   entityAbsoluteClass: string;
+  entityAbsoluteFolder: string;
 
   dtoClass?: string;
   dtoInstance?: string;
diff --git a/lib/types/application/relationship.d.ts b/lib/types/application/relationship.d.ts
index f713d945c496..a214c5874805 100644
--- a/lib/types/application/relationship.d.ts
+++ b/lib/types/application/relationship.d.ts
@@ -1,10 +1,18 @@
 import type { Entity } from '../base/entity.js';
 import type { Relationship as BaseRelationship } from '../base/relationship.js';
+import type { DerivedPropertiesOnlyOf } from '../utils/derived-properties.js';
 
-export interface Relationship<E extends Entity = Entity> extends BaseRelationship {
+type RelationshipProperties = DerivedPropertiesOnlyOf<
+  'relationship',
+  'LeftSide' | 'RightSide' | 'ManyToOne' | 'OneToMany' | 'OneToOne' | 'ManyToMany'
+>;
+
+export interface Relationship<E extends Entity = Entity> extends BaseRelationship, RelationshipProperties {
   propertyName: string;
   relationshipNameCapitalized: string;
 
+  otherEntity: E;
+
   collection: boolean;
   skipClient?: boolean;
   skipServer?: boolean;
@@ -13,11 +21,16 @@ export interface Relationship<E extends Entity = Entity> extends BaseRelationshi
    */
   persistableRelationship: boolean;
 
-  otherEntity: E;
-
+  id?: boolean;
   ownerSide?: boolean;
   relationshipEagerLoad?: boolean;
 
   propertyJavaBeanName?: string;
   propertyDtoJavaType?: string;
+
+  onDelete?: boolean;
+  onUpdate?: boolean;
+
+  /* TODO check motivation */
+  relationshipSqlSafeName?: string;
 }
diff --git a/lib/types/application/tasks.d.ts b/lib/types/application/tasks.d.ts
index a1297bdd48df..f9987a9274ae 100644
--- a/lib/types/application/tasks.d.ts
+++ b/lib/types/application/tasks.d.ts
@@ -54,9 +54,9 @@ type LoadingEntitiesTaskParam<E = Entity, A = ApplicationType<E>> = TaskParamWit
     /** Entity storage */
     entityStorage: Storage;
     /** Proxy object for the entitystorage */
-    entityConfig: Record<string, any>;
+    entityConfig: BaseEntity;
     /** Initial entity object */
-    entityBootstrap: Record<string, any>;
+    entityBootstrap: Entity;
   }[];
 };
 
diff --git a/lib/types/base/field.d.ts b/lib/types/base/field.d.ts
index 2cf809db416f..fa9c4e54334d 100644
--- a/lib/types/base/field.d.ts
+++ b/lib/types/base/field.d.ts
@@ -20,4 +20,5 @@
 export type Field = {
   fieldName: string;
   fieldType: string;
+  options?: Record<string, any>;
 };
diff --git a/lib/types/base/relationship.d.ts b/lib/types/base/relationship.d.ts
index 8f14c149e134..762426a4b651 100644
--- a/lib/types/base/relationship.d.ts
+++ b/lib/types/base/relationship.d.ts
@@ -19,4 +19,12 @@
 
 export type Relationship = {
   relationshipName: string;
+  otherEntityName: string;
+  relationshipType: string;
+
+  relationshipSide?: 'left' | 'right';
+  otherEntityRelationshipName?: string;
+  otherEntityField?: string;
+
+  options?: Record<string, any>;
 };
diff --git a/lib/types/utils/derived-properties.d.ts b/lib/types/utils/derived-properties.d.ts
index c0be8c7d309b..e173b97ad011 100644
--- a/lib/types/utils/derived-properties.d.ts
+++ b/lib/types/utils/derived-properties.d.ts
@@ -1,5 +1,9 @@
 import type { Simplify, ValueOf } from 'type-fest';
 
+export type DerivedPropertiesOnlyOf<Property extends string, Choices extends string> = Simplify<{
+  [K in Choices as `${Property}${Capitalize<K>}`]: boolean;
+}>;
+
 /*
  * @example
  * ```ts
@@ -10,7 +14,7 @@ import type { Simplify, ValueOf } from 'type-fest';
 export type DerivedPropertiesOf<Property extends string, Choices extends string> = Simplify<
   {
     [K in Choices as `${Property}${Capitalize<K>}`]: boolean;
-  } & Record<Property, Choices[number] | undefined> &
+  } & Record<Property, Choices | undefined> &
     Record<`${Property}Any`, boolean>
 >;
 
diff --git a/lib/utils/yo-rc.ts b/lib/utils/yo-rc.ts
index 1165ac3ddc1e..2935969d653c 100644
--- a/lib/utils/yo-rc.ts
+++ b/lib/utils/yo-rc.ts
@@ -1,4 +1,4 @@
-export const YO_RC_CONFIG_KEY = 'generator-jhipster' as const;
+export const YO_RC_CONFIG_KEY = 'generator-jhipster';
 
 type YoRcContent = Record<typeof YO_RC_CONFIG_KEY, any>;