chore: use nodenext module resolution, update CI to Node 22 (#118)

* chore: use nodenext module resolution, update CI to Node 22

- Switch tsconfig module/moduleResolution to nodenext (fixes type
  resolution for @mikro-orm/core subpath exports like ./schema)
- Update CI matrix to Node 22 only (MikroORM v7 requires >= 22.17.0)
- Update lockfile for v7 dependencies

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* chore: migrate from jest to vitest with swc, add Node 24 to CI

- Replace jest/ts-jest with vitest + unplugin-swc
- Add @swc-node/register and @swc/core
- Remove @types/jest, ts-jest, ts-loader, tslint, webpack deps
- Add Node 24 to CI matrix
- Update test scripts to use vitest

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* chore: fix vitest config for legacy decorators

- Enable legacyDecorator + decoratorMetadata in SWC config
- Set ReflectMetadataProvider explicitly (no longer default in v7)
- Add reflect-metadata as vitest setup file

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* chore: use dropDb in book test to match author test

With isolate: false, both test suites share the process. The author
test drops the DB via refresh({ dropDb: true }), so the book test
needs to do the same to recreate it.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* chore: revert unnecessary dropDb in schema.refresh()

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* chore: use fileParallelism instead of isolate: false

Each test file creates its own MikroORM instance against the same DB,
so they need isolated processes (like jest's default behavior) but
sequential execution to avoid conflicts.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* chore: use isolate: false instead of fileParallelism: false

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* chore: use tmpfs for MySQL data and wait for healthcheck in CI

Use tmpfs instead of named volume to ensure fresh MySQL state on every
run. Add healthcheck and --wait to ensure MySQL is ready before tests.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* chore: pre-create test database in MySQL docker service

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* chore: use fileParallelism: false for sequential test execution

Tests share the same database, so they need to run sequentially to
avoid conflicts. Unlike the realworld example which uses mocked
services, these tests use a real MySQL database.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: B4nan

.github/workflows/tests.yml

@@ -14,7 +14,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node-version: [ 20, 22 ]
+        node-version: [ 22, 24 ]
     steps:
       - name: Checkout Source code
         uses: actions/checkout@v6
@@ -30,7 +30,7 @@ jobs:
           corepack prepare yarn@stable --activate
 
       - name: Init docker
-        run: docker compose up -d
+        run: docker compose up -d --wait
 
       - name: Install
         run: yarn

docker-compose.yml

@@ -1,16 +1,16 @@
-version: "3.4"
-
 services:
   mysql:
     container_name: mysql
     image: mysql:9.6
-    restart: unless-stopped
     ports:
       - "3307:3306"
     environment:
       MYSQL_ALLOW_EMPTY_PASSWORD: 1
-    volumes:
-      - mysql:/var/lib/mysql
-
-volumes:
-  mysql:
+      MYSQL_DATABASE: nest-mikro-test-db
+    tmpfs:
+      - /var/lib/mysql
+    healthcheck:
+      test: ["CMD", "mysqladmin", "ping", "-h", "localhost"]
+      interval: 5s
+      timeout: 5s
+      retries: 10

package.json

@@ -12,12 +12,9 @@
     "prestart:prod": "rimraf dist && tsc",
     "start:prod": "node dist/main.js",
     "start:hmr": "node dist/server",
-    "lint": "tslint -p tsconfig.json -c tslint.json",
-    "test": "jest --runInBand",
-    "test:watch": "jest --watch",
-    "test:cov": "jest --coverage",
-    "test:e2e": "jest --config ./test/jest-e2e.json",
-    "webpack": "webpack --config webpack.config.js"
+    "test": "vitest run",
+    "test:watch": "vitest",
+    "test:cov": "vitest run --coverage"
   },
   "dependencies": {
     "@mikro-orm/core": "^7.0.1",
@@ -36,36 +33,18 @@
   "devDependencies": {
     "@mikro-orm/cli": "^7.0.1",
     "@nestjs/testing": "^11.0.6",
+    "@swc-node/register": "^1.11.1",
+    "@swc/core": "^1.15.3",
     "@types/express": "^5.0.0",
-    "@types/jest": "^30.0.0",
     "@types/node": "^24.0.0",
     "@types/supertest": "^7.0.0",
-    "jest": "^30.0.0",
     "nodemon": "^3.0.3",
     "prettier": "^3.2.5",
     "rimraf": "^6.0.0",
     "supertest": "^7.0.0",
-    "ts-jest": "^29.1.2",
-    "ts-loader": "^9.5.1",
     "tsx": "^4.19.0",
-    "tslint": "6.1.3",
-    "webpack": "^5.104.1",
-    "webpack-cli": "^6.0.0",
-    "webpack-node-externals": "^3.0.0"
-  },
-  "jest": {
-    "moduleFileExtensions": [
-      "js",
-      "json",
-      "ts"
-    ],
-    "rootDir": "src",
-    "testRegex": ".spec.ts$",
-    "transform": {
-      "^.+\\.(t|j)s$": "ts-jest"
-    },
-    "coverageDirectory": "../coverage",
-    "testEnvironment": "node"
+    "unplugin-swc": "^1.5.9",
+    "vitest": "^4.1.0"
   },
   "engines": {
     "node": ">= 22.17.0"

src/mikro-orm.config.ts

@@ -1,6 +1,7 @@
 import { Logger } from '@nestjs/common';
 import { SqlHighlighter } from '@mikro-orm/sql-highlighter';
 import { defineConfig } from '@mikro-orm/mysql';
+import { ReflectMetadataProvider } from '@mikro-orm/decorators/legacy';
 import { Author, BaseEntity, Book, BookTag, Publisher } from './entities';
 
 const logger = new Logger('MikroORM');
@@ -10,6 +11,7 @@ export default defineConfig({
   dbName: 'mikro-orm-nest-ts',
   port: 3307,
   highlighter: new SqlHighlighter(),
+  metadataProvider: ReflectMetadataProvider,
   debug: true,
   logger: logger.log.bind(logger),
   dynamicImportProvider: id => import(id),

tsconfig.json

@@ -1,18 +1,16 @@
 {
   "compilerOptions": {
-    "module": "commonjs",
+    "module": "nodenext",
     "declaration": true,
     "noImplicitAny": false,
     "removeComments": true,
     "noLib": false,
     "strict": true,
-    "allowSyntheticDefaultImports": true,
     "emitDecoratorMetadata": true,
     "experimentalDecorators": true,
-    "target": "es6",
+    "target": "es2022",
     "sourceMap": true,
-    "outDir": "./dist",
-    "baseUrl": "./src"
+    "outDir": "./dist"
   },
   "include": [
     "src/**/*"

vitest.config.ts

@@ -0,0 +1,31 @@
+import { defineConfig } from 'vitest/config';
+import swc from 'unplugin-swc';
+
+export default defineConfig({
+  plugins: [
+    swc.vite({
+      jsc: {
+        target: 'es2024',
+        transform: {
+          legacyDecorator: true,
+          decoratorMetadata: true,
+        },
+      },
+      sourceMaps: true,
+    }),
+  ],
+  test: {
+    environment: 'node',
+    include: ['src/**/*.spec.ts'],
+    globals: true,
+    setupFiles: ['reflect-metadata'],
+    coverage: {
+      reporter: ['clover', 'json', 'lcov', 'text'],
+      include: ['src/**/*.ts'],
+    },
+    disableConsoleIntercept: true,
+    clearMocks: true,
+    fileParallelism: false,
+    testTimeout: 60_000,
+  },
+});