feat(build): compile with the TypeScript 7 native compiler

acceptance/repository-cloudant/docker.setup.js

@@ -43,7 +43,7 @@ async function createDB() {
   // retry if socket hangs up too early
   try {
     dbRequest(opts);
-  } catch (error) {
+  } catch {
     dbRequest(opts);
   }
   return new Promise(() => {

acceptance/repository-cloudant/package.json

@@ -45,6 +45,6 @@
     "loopback-connector-cloudant": "2.5.0",
     "ms": "2.1.3",
     "tslib": "^2.8.1",
-    "typescript": "~5.2.2"
+    "typescript": "npm:@typescript/typescript6@~6.0.2"
   }
 }

benchmark/src/__tests__/benchmark.integration.ts

@@ -39,7 +39,7 @@ describe('Benchmark (SLOW)', function (this: Mocha.Suite) {
       urlPath: string,
       options?: Omit<Options, 'url'>,
     ): Promise<EndpointStats> {
-      if (!options) options = {};
+      options ??= {};
 
       const requestOptions: AxiosRequestConfig = {
         url: this.buildUrl(urlPath),

benchmark/src/rest-routing/routing-table.ts

@@ -99,7 +99,7 @@ function givenRouter(router: RestRouter, spec: OpenApiSpec, count: number) {
       try {
         table.find(request);
         found++;
-      } catch (e) {
+      } catch {
         missed++;
       }
     }

bin/sync-dev-deps.js

@@ -12,18 +12,20 @@
 
 const path = require('node:path');
 const fse = require('fs-extra');
-const {
-  loadLernaRepo,
-  writeJsonSync,
-  isDryRun,
-  printJson,
-  runMain,
-} = require('./script-util');
+const pkgJson = require('@npmcli/package-json');
+const mapWorkspaces = require('@npmcli/map-workspaces');
+const {writeJsonSync, isDryRun, printJson, runMain} = require('./script-util');
 
 async function syncDevDeps(options) {
-  const {project, packages} = await loadLernaRepo();
+  const rootPath = process.cwd();
 
-  const rootPath = project.rootPath;
+  const {content: rootPkg} = await pkgJson.load(rootPath);
+  const workspaces = await mapWorkspaces({cwd: rootPath, pkg: rootPkg});
+
+  const packages = Array.from(workspaces, ([name, location]) => ({
+    name,
+    manifestLocation: path.join(location, 'package.json'),
+  }));
 
   // Load dependencies from `packages/eslint-config/package.json`
   const eslintDeps = require(

bodyparsers/rest-msgpack/package.json

@@ -48,6 +48,6 @@
     "@types/msgpack5": "^3.4.7",
     "@types/node": "^20.19.43",
     "@types/type-is": "^1.6.7",
-    "typescript": "~5.2.2"
+    "typescript": "npm:@typescript/typescript6@~6.0.2"
   }
 }

examples/access-control-migration/package.json

@@ -75,6 +75,6 @@
     "@types/node": "^20.19.43",
     "eslint": "^8.57.1",
     "lodash": "^4.18.1",
-    "typescript": "~5.2.2"
+    "typescript": "npm:@typescript/typescript6@~6.0.2"
   }
 }

examples/binding-resolution/package.json

@@ -58,6 +58,6 @@
     "@types/node": "^20.19.43",
     "eslint": "^8.57.1",
     "source-map-support": "^0.5.21",
-    "typescript": "~5.2.2"
+    "typescript": "npm:@typescript/typescript6@~6.0.2"
   }
 }

examples/context/package.json

@@ -55,6 +55,6 @@
     "@loopback/testlab": "^8.0.15",
     "@types/node": "^20.19.43",
     "eslint": "^8.57.1",
-    "typescript": "~5.2.2"
+    "typescript": "npm:@typescript/typescript6@~6.0.2"
   }
 }

examples/context/src/custom-configuration-resolver.ts

@@ -47,7 +47,7 @@ class EnvConfigResolver
     );
     try {
       return JSON.parse(val);
-    } catch (err) {
+    } catch {
       return val;
     }
   }

examples/express-composition/package.json

@@ -63,6 +63,6 @@
     "@types/express": "^4.17.25",
     "@types/node": "^20.19.43",
     "eslint": "^8.57.1",
-    "typescript": "~5.2.2"
+    "typescript": "npm:@typescript/typescript6@~6.0.2"
   }
 }

examples/file-transfer/package.json

@@ -61,6 +61,6 @@
     "@types/multer": "^2.2.0",
     "@types/node": "^20.19.43",
     "eslint": "^8.57.1",
-    "typescript": "~5.2.2"
+    "typescript": "npm:@typescript/typescript6@~6.0.2"
   }
 }

examples/file-transfer/src/services/file-upload.service.ts

@@ -23,10 +23,8 @@ import {FileUploadHandler} from '../types';
 })
 export class FileUploadProvider implements Provider<FileUploadHandler> {
   constructor(@config() private options: multer.Options = {}) {
-    if (!this.options.storage) {
-      // Default to in-memory storage
-      this.options.storage = multer.memoryStorage();
-    }
+    // Default to in-memory storage
+    this.options.storage ??= multer.memoryStorage();
   }
 
   value(): FileUploadHandler {

examples/graphql/package.json

@@ -68,6 +68,6 @@
     "graphql-ws": "^5.16.2",
     "rimraf": "^5.0.10",
     "source-map-support": "^0.5.21",
-    "typescript": "~5.2.2"
+    "typescript": "npm:@typescript/typescript6@~6.0.2"
   }
 }

examples/greeter-extension/package.json

@@ -59,6 +59,6 @@
     "@types/debug": "4.1.13",
     "@types/node": "^20.19.43",
     "eslint": "^8.57.1",
-    "typescript": "~5.2.2"
+    "typescript": "npm:@typescript/typescript6@~6.0.2"
   }
 }

examples/greeting-app/package.json

@@ -63,6 +63,6 @@
     "@types/debug": "4.1.13",
     "@types/node": "^20.19.43",
     "eslint": "^8.57.1",
-    "typescript": "~5.2.2"
+    "typescript": "npm:@typescript/typescript6@~6.0.2"
   }
 }

examples/hello-world/package.json

@@ -56,6 +56,6 @@
     "@loopback/testlab": "^8.0.15",
     "@types/node": "^20.19.43",
     "eslint": "^8.57.1",
-    "typescript": "~5.2.2"
+    "typescript": "npm:@typescript/typescript6@~6.0.2"
   }
 }

examples/lb3-application/package.json

@@ -71,6 +71,6 @@
     "eslint": "^8.57.1",
     "lodash": "^4.18.1",
     "should": "^13.2.3",
-    "typescript": "~5.2.2"
+    "typescript": "npm:@typescript/typescript6@~6.0.2"
   }
 }

examples/log-extension/package.json

@@ -58,6 +58,6 @@
     "@types/debug": "^4.1.13",
     "@types/node": "^20.19.43",
     "eslint": "^8.57.1",
-    "typescript": "~5.2.2"
+    "typescript": "npm:@typescript/typescript6@~6.0.2"
   }
 }

examples/log-extension/src/decorators/log.decorator.ts

@@ -19,7 +19,7 @@ import {LevelMetadata} from '../types';
  * @param level - The Log Level at or above it should log
  */
 export function log(level?: number) {
-  if (level === undefined) level = LOG_LEVEL.WARN;
+  level ??= LOG_LEVEL.WARN;
   return MethodDecoratorFactory.createDecorator<LevelMetadata>(
     EXAMPLE_LOG_METADATA_KEY,
     {

examples/metrics-prometheus/package.json

@@ -59,6 +59,6 @@
     "@loopback/testlab": "^8.0.15",
     "@types/node": "^20.19.43",
     "eslint": "^8.57.1",
-    "typescript": "~5.2.2"
+    "typescript": "npm:@typescript/typescript6@~6.0.2"
   }
 }

examples/multi-tenancy/package.json

@@ -73,6 +73,6 @@
     "@types/node": "^20.19.43",
     "eslint": "^8.57.1",
     "source-map-support": "^0.5.21",
-    "typescript": "~5.2.2"
+    "typescript": "npm:@typescript/typescript6@~6.0.2"
   }
 }

examples/passport-login/package.json

@@ -97,6 +97,6 @@
     "axios": "^1.16.0",
     "eslint": "^8.57.1",
     "lodash": "^4.18.1",
-    "typescript": "~5.2.2"
+    "typescript": "npm:@typescript/typescript6@~6.0.2"
   }
 }

examples/passport-login/src/authentication-strategies/basic.ts

@@ -91,7 +91,7 @@ export class BasicStrategy implements AuthenticationStrategy {
           return done(null, false);
         }
         const user = users[0];
-        if (!user.credentials || user.credentials.password !== password) {
+        if (user.credentials?.password !== password) {
           return done(null, false);
         }
         // Authentication passed, return user profile

examples/passport-login/src/authentication-strategies/local.ts

@@ -87,7 +87,7 @@ export class LocalAuthStrategy implements AuthenticationStrategy {
           return done(null, null, {message: AUTH_FAILED_MESSAGE});
         }
         const user = users[0];
-        if (!user.credentials || user.credentials.password !== password) {
+        if (user.credentials?.password !== password) {
           return done(null, null, {message: AUTH_FAILED_MESSAGE});
         }
         // Authentication passed, return user profile

examples/references-many/package.json

@@ -71,6 +71,6 @@
     "@types/node": "^20.19.43",
     "eslint": "^8.57.1",
     "lodash": "^4.18.1",
-    "typescript": "~5.2.2"
+    "typescript": "npm:@typescript/typescript6@~6.0.2"
   }
 }

examples/rest-crud/package.json

@@ -68,6 +68,6 @@
     "@types/node": "^20.19.43",
     "eslint": "^8.57.1",
     "lodash": "^4.18.1",
-    "typescript": "~5.2.2"
+    "typescript": "npm:@typescript/typescript6@~6.0.2"
   }
 }

examples/rpc-server/package.json

@@ -53,6 +53,6 @@
     "@types/express": "^4.17.25",
     "@types/node": "^20.19.43",
     "eslint": "^8.57.1",
-    "typescript": "~5.2.2"
+    "typescript": "npm:@typescript/typescript6@~6.0.2"
   }
 }

examples/rpc-server/src/application.ts

@@ -16,7 +16,7 @@ export class MyApplication extends Application {
     super(options);
     this.controller(GreetController);
     this.server(RPCServer);
-    this.options.port = this.options.port || 3000;
+    this.options.port = this.options.port ?? 3000;
     this.bind('rpcServer.config').to(this.options);
   }
 }

examples/rpc-server/src/rpc.router.ts

@@ -9,8 +9,8 @@ import {RPCServer} from './rpc.server';
 
 export function rpcRouter(server: RPCServer) {
   const jsonParser = parser.json();
-  server.expressServer.post('*', jsonParser, async (request, response) => {
-    await routeHandler(server, request, response);
+  server.expressServer.post('*', jsonParser, (request, response, next) => {
+    routeHandler(server, request, response).catch(next);
   });
 }
 

examples/soap-calculator/package.json

@@ -63,6 +63,6 @@
     "eslint": "^8.57.1",
     "mocha": "^12.0.1",
     "source-map-support": "^0.5.21",
-    "typescript": "~5.2.2"
+    "typescript": "npm:@typescript/typescript6@~6.0.2"
   }
 }

examples/socketio/package.json

@@ -69,6 +69,6 @@
     "eslint": "^8.57.1",
     "socket.io-client": "^4.8.3",
     "source-map-support": "^0.5.21",
-    "typescript": "~5.2.2"
+    "typescript": "npm:@typescript/typescript6@~6.0.2"
   }
 }

examples/todo-jwt/package.json

@@ -75,6 +75,6 @@
     "@types/node": "^20.19.43",
     "eslint": "^8.57.1",
     "lodash": "^4.18.1",
-    "typescript": "~5.2.2"
+    "typescript": "npm:@typescript/typescript6@~6.0.2"
   }
 }

examples/todo-list/package.json

@@ -71,6 +71,6 @@
     "@types/node": "^20.19.43",
     "eslint": "^8.57.1",
     "lodash": "^4.18.1",
-    "typescript": "~5.2.2"
+    "typescript": "npm:@typescript/typescript6@~6.0.2"
   }
 }

examples/todo-list/src/__tests__/integration/todo-list-image.repository.integration.ts

@@ -31,6 +31,7 @@ describe('TodoListImageRepository', () => {
       testdb,
       async () => todoListRepo,
     );
+    todoRepo = new TodoRepository(testdb, async () => todoListRepo);
   });
 
   beforeEach(givenEmptyDatabase);

examples/todo-list/src/__tests__/integration/todo.repository.integration.ts

@@ -28,6 +28,10 @@ describe('TodoRepository', () => {
       async () => todoListImageRepo,
     );
     todoRepo = new TodoRepository(testdb, async () => todoListRepo);
+    todoListImageRepo = new TodoListImageRepository(
+      testdb,
+      async () => todoListRepo,
+    );
   });
 
   beforeEach(givenEmptyDatabase);

examples/todo/package.json

@@ -71,6 +71,6 @@
     "@types/node": "^20.19.43",
     "eslint": "^8.57.1",
     "lodash": "^4.18.1",
-    "typescript": "~5.2.2"
+    "typescript": "npm:@typescript/typescript6@~6.0.2"
   }
 }

examples/validation-app/package.json

@@ -66,6 +66,6 @@
     "@types/node": "^20.19.43",
     "eslint": "^8.57.1",
     "source-map-support": "^0.5.21",
-    "typescript": "~5.2.2"
+    "typescript": "npm:@typescript/typescript6@~6.0.2"
   }
 }

examples/webpack/package.json

@@ -51,7 +51,7 @@
     "events": "^3.3.0",
     "process": "^0.11.10",
     "puppeteer": "^25.10.0",
-    "typescript": "~5.2.2",
+    "typescript": "npm:@typescript/typescript6@~6.0.2",
     "util": "^0.12.5",
     "webpack": "^5.110.3",
     "webpack-cli": "^7.2.3"

extensions/authentication-jwt/package.json

@@ -62,6 +62,6 @@
     "@types/lodash": "^4.17.25",
     "@types/node": "^20.19.43",
     "lodash": "^4.18.1",
-    "typescript": "~5.2.2"
+    "typescript": "npm:@typescript/typescript6@~6.0.2"
   }
 }

extensions/authentication-jwt/src/services/refreshtoken.service.ts

@@ -95,7 +95,7 @@ export class RefreshtokenService {
       await this.refreshTokenRepository.delete(
         new RefreshToken({refreshToken: refreshToken}),
       );
-    } catch (e) {
+    } catch {
       // ignore
     }
   }

extensions/cron/src/types.ts

@@ -52,10 +52,13 @@ export class CronJob extends BaseCronJob {
     } else {
       this.name = `job-${++CronJob.count}`;
     }
-    // Override `fireOnTick` to catch errors
+    // Override `fireOnTick` to catch errors. `cron` declares `fireOnTick` as a
+    // class field but installs it on the prototype, so it cannot be reached
+    // via `super`.
+    const fireOnTick = BaseCronJob.prototype.fireOnTick;
     this.fireOnTick = () => {
       try {
-        return super.fireOnTick();
+        return fireOnTick.call(this);
       } catch (err) {
         this.emitter.emit('error', err);
       }

extensions/graphql/src/graphql.container.ts

@@ -84,9 +84,7 @@ export class LoopBackContainer implements ContainerType {
     } else {
       // Narrow down by key
       found = bindings.find(filterByKey(resolverBinding.key));
-      if (!found) {
-        found = bindings[0];
-      }
+      found ??= bindings[0];
     }
 
     debug(