chore: merge 10.0.0

feat(core): middleware runs once for matching route

.circleci/config.yml

@@ -3,19 +3,19 @@ version: 2
 aliases:
   - &restore-cache
     restore_cache:
-        key: dependency-cache-{{ checksum "package.json" }}
+      key: dependency-cache-{{ checksum "package.json" }}
   - &install-deps
     run:
-        name: Install dependencies
-        command: npm ci
+      name: Install dependencies
+      command: npm ci --legacy-peer-deps
   - &build-packages
     run:
-        name: Build
-        command: npm run build
+      name: Build
+      command: npm run build
   - &run-unit-tests
     run:
-        name: Test
-        command: npm run test
+      name: Test
+      command: npm run test
 
 unit-tests-template: &unit-tests-template
   working_directory: ~/nest
@@ -30,17 +30,17 @@ jobs:
   build:
     working_directory: ~/nest
     docker:
-      - image: circleci/node:12
+      - image: cimg/node:16.19
     steps:
       - checkout
       - run:
           name: Update NPM version
-          command: 'sudo npm install -g npm@latest'
+          command: 'sudo npm install -g npm@^8'
       - restore_cache:
           key: dependency-cache-{{ checksum "package.json" }}
       - run:
           name: Install dependencies
-          command: npm ci
+          command: npm ci --legacy-peer-deps
       - save_cache:
           key: dependency-cache-{{ checksum "package.json" }}
           paths:
@@ -48,42 +48,39 @@ jobs:
       - run:
           name: Build
           command: npm run build
-        
-  test_node_12:
+
+  test_node_16:
     working_directory: ~/nest
     docker:
-      - image: circleci/node:12
+      - image: cimg/node:16.19
     steps:
       - checkout
       - *restore-cache
       - *install-deps
       - *build-packages
-      - *run-unit-tests
+      - run:
+          name: Test (coverage)
+          command: npm run test:cov
       - run:
           name: Collect coverage
           command: npm run coverage
       - store_artifacts:
           path: coverage
 
-  test_node_10:
+  test_node_18:
     <<: *unit-tests-template
     docker:
-      - image: circleci/node:10
+      - image: cimg/node:18.14
 
-  test_node_14:
+  test_node_19:
     <<: *unit-tests-template
     docker:
-      - image: circleci/node:14
-    
-  test_node_16:
-    <<: *unit-tests-template
-    docker:
-      - image: circleci/node:16
+      - image: cimg/node:19.8
 
   lint:
     working_directory: ~/nest
     docker:
-      - image: circleci/node:12
+      - image: circleci/node:16
     steps:
       - checkout
       - *restore-cache
@@ -100,17 +97,17 @@ jobs:
     machine: true
     steps:
       - checkout
-      - run: 
+      - run:
           name: Prepare nvm
           command: |
             echo 'export NVM_DIR="/opt/circleci/.nvm"' >> $BASH_ENV
             echo ' [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"' >> $BASH_ENV
-      - run: 
+      - run:
           name: Upgrade Node.js
           command: |
-            nvm install v12
+            nvm install v16
             node -v
-            nvm alias default v12
+            nvm alias default v16
       - run:
           name: Install Docker Compose
           command: |
@@ -129,11 +126,11 @@ jobs:
       - run:
           name: Integration tests
           command: npm run test:integration
-          
+
   codechecks_benchmarks:
     working_directory: ~/nest
     docker:
-      - image: circleci/node:12
+      - image: cimg/node:16.19
     steps:
       - checkout
       - *restore-cache
@@ -149,7 +146,7 @@ jobs:
   samples:
     working_directory: ~/nest
     docker:
-      - image: circleci/node:12
+      - image: cimg/node:16.19
     environment:
       - DISABLE_OPENCOLLECTIVE: true
     steps:
@@ -168,13 +165,7 @@ workflows:
       - test_node_16:
           requires:
             - build
-      - test_node_14:
-          requires:
-            - build
-      - test_node_12:
-          requires:
-            - build
-      - test_node_10:
+      - test_node_18:
           requires:
             - build
       - lint:

.commitlintrc.json

@@ -23,6 +23,22 @@
         "test",
         "sample"
       ]
+    ],
+    "scope-enum": [
+      1,
+      "always",
+      [
+        "common",
+        "core",
+        "sample",
+        "microservices",
+        "express",
+        "fastify",
+        "socket.io",
+        "ws",
+        "testing",
+        "websockets"
+      ]
     ]
   }
 }

.eslintignore

@@ -1 +1,3 @@
-**/node_modules/**
+**/node_modules/**
+*.d.ts
+*.js

.eslintrc.js

@@ -1,25 +1,46 @@
 module.exports = {
-  parser: '@typescript-eslint/parser',
-  parserOptions: {
-    project: 'tsconfig.json',
-    sourceType: 'module',
-  },
-  plugins: ['@typescript-eslint/eslint-plugin'],
-  extends: [
-    'plugin:@typescript-eslint/eslint-recommended',
-    'plugin:@typescript-eslint/recommended',
-    'prettier',
-  ],
   root: true,
   env: {
     node: true,
   },
-  rules: {
-    '@typescript-eslint/interface-name-prefix': 'off',
-    '@typescript-eslint/explicit-function-return-type': 'off',
-    '@typescript-eslint/no-explicit-any': 'off',
-    '@typescript-eslint/explicit-module-boundary-types': 'off',
-    '@typescript-eslint/no-unused-vars': 'off',
-    '@typescript-eslint/ban-types': 'off',
-  },
+  plugins: ['@typescript-eslint/eslint-plugin'],
+  extends: [
+    'plugin:@typescript-eslint/recommended',
+    'prettier',
+  ],
+  overrides: [
+    {
+      files: ['**/*.ts'],
+      parser: '@typescript-eslint/parser',
+      parserOptions: {
+        project: 'tsconfig.json',
+        sourceType: 'module',
+      },
+      rules: {
+        '@typescript-eslint/interface-name-prefix': 'off',
+        '@typescript-eslint/explicit-function-return-type': 'off',
+        '@typescript-eslint/no-explicit-any': 'off',
+        '@typescript-eslint/explicit-module-boundary-types': 'off',
+        '@typescript-eslint/no-unused-vars': 'off',
+        '@typescript-eslint/ban-types': 'off',
+      },
+    },
+    {
+      files: ['**/*.spec.ts', 'integration/**/*.ts'],
+      parser: '@typescript-eslint/parser',
+      parserOptions: {
+        project: 'tsconfig.spec.json',
+        sourceType: 'module',
+      },
+      rules: {
+        '@typescript-eslint/interface-name-prefix': 'off',
+        '@typescript-eslint/explicit-function-return-type': 'off',
+        '@typescript-eslint/no-explicit-any': 'off',
+        '@typescript-eslint/explicit-module-boundary-types': 'off',
+        '@typescript-eslint/no-unused-vars': 'off',
+        '@typescript-eslint/ban-types': 'off',
+        '@typescript-eslint/no-empty-function': 'off',
+      },
+    }
+  ]
 };

.eslintrc.spec.js

@@ -1,13 +0,0 @@
-const baseConfig = require('./.eslintrc');
-
-module.exports = {
-  ...baseConfig,
-  parserOptions: {
-    project: 'tsconfig.spec.json',
-    sourceType: 'module',
-  },
-  rules: {
-    ...baseConfig.rules,
-    '@typescript-eslint/no-empty-function': 'off',
-  },
-};

.github/ISSUE_TEMPLATE/Bug_report.yml

@@ -57,7 +57,7 @@ body:
       required: true
     attributes:
       label: "Expected behavior"
-      description: "A clear and concise description of what you expected to happend (or code)"
+      description: "A clear and concise description of what you expected to happened (or code)"
 
   - type: markdown
     attributes:

.github/ISSUE_TEMPLATE/Regression.yml

@@ -74,7 +74,7 @@ body:
       required: true
     attributes:
       label: "Expected behavior"
-      description: "A clear and concise description of what you expected to happend (or code)"
+      description: "A clear and concise description of what you expected to happened (or code)"
 
   - type: textarea
     attributes:

.github/workflows/codeql-analysis.yml

@@ -9,14 +9,19 @@ on:
   schedule:
     - cron: '0 17 * * 4'
 
+permissions:
+  contents: read
+
 jobs:
   analyse:
+    permissions:
+      security-events: write
     name: Analyse
     runs-on: ubuntu-latest
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
       with:
         # We must fetch at least the immediate parents so that if this is
         # a pull request then we can checkout the head.
@@ -29,7 +34,7 @@ jobs:
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
-      uses: github/codeql-action/init@v1
+      uses: github/codeql-action/init@v2
       with:
         queries: +security-extended
       # Override language selection by uncommenting this and choosing your languages
@@ -39,7 +44,7 @@ jobs:
     # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
     # If this step fails, then you should remove it and run the build manually (see below)
     - name: Autobuild
-      uses: github/codeql-action/autobuild@v1
+      uses: github/codeql-action/autobuild@v2
 
     # ℹ️ Command-line programs to run using the OS shell.
     # 📚 https://git.io/JvXDl
@@ -53,4 +58,4 @@ jobs:
     #   make release
 
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v1
+      uses: github/codeql-action/analyze@v2

.gitignore

@@ -8,6 +8,13 @@ node_modules/
 /.devcontainer
 *.code-workspace
 
+# Vim
+[._]*.s[a-v][a-z]
+[._]*.sw[a-p]
+[._]s[a-rt-v][a-z]
+[._]ss[a-gi-z]
+[._]sw[a-p]
+
 # bundle
 packages/**/*.d.ts
 packages/**/*.js
@@ -20,6 +27,7 @@ yarn-error.log
 /**/npm-debug.log
 /packages/**/.npmignore
 /packages/**/LICENSE
+*.tsbuildinfo
 
 # example
 /quick-start
@@ -34,3 +42,6 @@ yarn-error.log
 /packages/graphql
 /benchmarks/memory
 build/config\.gypi
+
+.npmrc
+pnpm-lock.yaml

.mocharc.js

@@ -1,7 +0,0 @@
-module.exports = {
-  mochaHooks: {
-    beforeAll: function() {
-      require('reflect-metadata');
-    }
-  }
-};

.npmignore

@@ -10,4 +10,6 @@
 package-lock.json
 tslint.json
 tsconfig.json
-.prettierrc
+.prettierrc
+
+*.tsbuildinfo

.prettierignore

@@ -1,2 +1,3 @@
 packages/**/*.d.ts
-packages/**/*.js
+packages/**/*.js
+.nyc_output

CONTRIBUTING.md

@@ -19,7 +19,7 @@ Help us keep Nest open and inclusive. Please read and follow our [Code of Conduc
 
 ## <a name="question"></a> Got a Question or Problem?
 
-**Do not open issues for general support questions as we want to keep GitHub issues for bug reports and feature requests.** You've got much better chances of getting your question answered on [Stack Overflow](https://stackoverflow.com/questions/tagged/nestjs) where the questions should be tagged with tag `nestjs`.
+**Do not open issues for general support questions as we want to keep GitHub issues for bug reports and feature requests.** You've got much better chances of getting your question answered on [Stack Overflow][stackoverflow] where the questions should be tagged with tag `nestjs`.
 
 Stack Overflow is a much better place to ask questions since:
 
@@ -71,7 +71,7 @@ A minimal reproduce scenario using a repository or Gist allows us to quickly con
 
 Unfortunately, we are not able to investigate / fix bugs without a minimal reproduction, so if we don't hear back from you we are going to close an issue that doesn't have enough info to be reproduced.
 
-You can file new issues by filling out our [new issue form](https://github.com/nestjs/nest/issues/new).
+You can file new issues by filling out our [new issue form][new_issue].
 
 ### <a name="submit-pr"></a> Submitting a Pull Request (PR)
 
@@ -84,9 +84,9 @@ To the first point
 We cannot accept code without this.
 -->
 
-1. Search [GitHub](https://github.com/nestjs/nest/pulls) for an open or closed PR
+1. Search [GitHub Pull Requests][gh_prs] for an open or closed PR
    that relates to your submission. You don't want to duplicate effort.
-1. Fork the nestjs/nest repo.
+1. Fork this repository.
 1. Make your changes in a new git branch:
 
    ```shell
@@ -159,12 +159,12 @@ from the main (upstream) repository:
 
 ## <a name="development"></a> Development Setup
 
-You will need Node.js version 8.9.0+.
+You will need [Node.js](https://nodejs.org) version >= 10.13.0 (except for v13).
 
 1. After cloning the repo, run:
 
 ```bash
-$ npm i # (or yarn install)
+$ npm ci # (or yarn install)
 ```
 
 2. In order to prepare your environment run `prepare.sh` shell script:
@@ -233,7 +233,7 @@ to read on GitHub as well as in various git tools.
 
 Footer should contain a [closing reference to an issue](https://help.github.com/articles/closing-issues-via-commit-messages/) if any.
 
-Samples: (even more [samples](https://github.com/nestjs/nest/commits/master))
+Samples: (even more [samples][commits_samples])
 
 ```
 docs(changelog): update change log to beta.5
@@ -262,16 +262,22 @@ Must be one of the following:
 
 ### Scope
 
-The scope should be the name of the npm package affected (as perceived by person reading changelog generated from commit messages.
+The scope should have the name of the npm package affected (as perceived by person reading changelog generated from commit messages).
 
 The following is the list of supported scopes:
 
-- **common**
-- **core**
-- **sample**
-- **microservices**
-- **testing**
-- **websockets**
+- **common**: for changes made on `packages/common` directory
+- **core**: for changes made on `packages/core` directory
+- **sample**: for changes made on `packages/sample` directory
+- **microservices**: for changes made on `packages/microservices` directory
+- **express**: for changes made on `packages/platform-express` directory
+- **fastify**: for changes made on `packages/platform-fastify` directory
+- **socket.io**: for changes made on `packages/platform-socket.io` directory
+- **ws**: for changes made on `packages/platform-ws` directory
+- **testing**: for changes made on `packages/testing` directory
+- **websockets**: for changes made on `packages/websockets` directory
+
+If your change affect more than one package, separate the scopes with a comma (e.g. `common,core`).
 
 There are currently a few exceptions to the "use package name" rule:
 
@@ -279,7 +285,6 @@ There are currently a few exceptions to the "use package name" rule:
 - **changelog**: used for updating the release notes in CHANGELOG.md
 - **sample/#**: for the example apps directory, replacing # with the example app number
 - none/empty string: useful for `style`, `test` and `refactor` changes that are done across all packages (e.g. `style: add missing semicolons`)
-  <!-- * **aio**: used for docs-app (angular.io) related changes within the /aio directory of the repo -->
 
 ### Subject
 
@@ -317,14 +322,13 @@ changes to be accepted, the CLA must be signed. It's a quick process, we promise
 <!-- [coc]: https://github.com/angular/code-of-conduct/blob/master/CODE_OF_CONDUCT.md -->
 
 [commit-message-format]: https://docs.google.com/document/d/1QrDFcIiPjSLDn3EL15IJygNPiHORgU1_OOAqWjiDU5Y/edit#
-[corporate-cla]: http://code.google.com/legal/corporate-cla-v1.0.html
+<!-- [individual-cla]: http://code.google.com/legal/individual-cla-v1.0.html -->
+<!-- [corporate-cla]: http://code.google.com/legal/corporate-cla-v1.0.html -->
 [dev-doc]: https://github.com/nestjs/nest/blob/master/docs/DEVELOPER.md
 [github]: https://github.com/nestjs/nest
+[stackoverflow]: https://stackoverflow.com/questions/tagged/nestjs
 [discord]: https://discordapp.com/invite/G7Qnnhy
-[individual-cla]: http://code.google.com/legal/individual-cla-v1.0.html
 [js-style-guide]: https://google.github.io/styleguide/jsguide.html
-[jsfiddle]: http://jsfiddle.net
-[plunker]: http://plnkr.co/edit
-[runnable]: http://runnable.com
-
-<!-- [stackoverflow]: http://stackoverflow.com/questions/tagged/angular -->
+[new_issue]: https://github.com/nestjs/nest/issues/new
+[gh_prs]: https://github.com/nestjs/nest/pulls
+[commits_samples]: https://github.com/nestjs/nest/commits/master

LICENSE

@@ -1,6 +1,6 @@
 (The MIT License)
 
-Copyright (c) 2017-2022 Kamil Mysliwiec <https://kamilmysliwiec.com>
+Copyright (c) 2017-2023 Kamil Mysliwiec <https://kamilmysliwiec.com>
 
 Permission is hereby granted, free of charge, to any person obtaining
 a copy of this software and associated documentation files (the

Readme.md

@@ -1,17 +1,16 @@
 <p align="center">
-  <a href="http://nestjs.com/" target="blank"><img src="https://nestjs.com/img/logo-small.svg" width="120" alt="Nest Logo" /></a>
+  <a href="https://nestjs.com/" target="blank"><img src="https://nestjs.com/img/logo-small.svg" width="120" alt="Nest Logo" /></a>
 </p>
 
 [circleci-image]: https://img.shields.io/circleci/build/github/nestjs/nest/master?token=abc123def456
 [circleci-url]: https://circleci.com/gh/nestjs/nest
 
-  <p align="center">A progressive <a href="http://nodejs.org" target="_blank">Node.js</a> framework for building efficient and scalable server-side applications.</p>
+  <p align="center">A progressive <a href="https://nodejs.org" target="_blank">Node.js</a> framework for building efficient and scalable server-side applications.</p>
     <p align="center">
 <a href="https://www.npmjs.com/~nestjscore" target="_blank"><img src="https://img.shields.io/npm/v/@nestjs/core.svg" alt="NPM Version" /></a>
 <a href="https://www.npmjs.com/~nestjscore" target="_blank"><img src="https://img.shields.io/npm/l/@nestjs/core.svg" alt="Package License" /></a>
 <a href="https://www.npmjs.com/~nestjscore" target="_blank"><img src="https://img.shields.io/npm/dm/@nestjs/common.svg" alt="NPM Downloads" /></a>
 <a href="https://circleci.com/gh/nestjs/nest" target="_blank"><img src="https://img.shields.io/circleci/build/github/nestjs/nest/master" alt="CircleCI" /></a>
-<a href="https://coveralls.io/github/nestjs/nest?branch=master" target="_blank"><img src="https://coveralls.io/repos/github/nestjs/nest/badge.svg?branch=master#9" alt="Coverage" /></a>
 <a href="https://discord.gg/G7Qnnhy" target="_blank"><img src="https://img.shields.io/badge/discord-online-brightgreen.svg" alt="Discord"/></a>
 <a href="https://opencollective.com/nest#backer" target="_blank"><img src="https://opencollective.com/nest/backers/badge.svg" alt="Backers on Open Collective" /></a>
 <a href="https://opencollective.com/nest#sponsor" target="_blank"><img src="https://opencollective.com/nest/sponsors/badge.svg" alt="Sponsors on Open Collective" /></a>
@@ -37,8 +36,8 @@ Nest is a framework for building efficient, scalable <a href="http://nodejs.org"
 
 * To check out the [guide](https://docs.nestjs.com), visit [docs.nestjs.com](https://docs.nestjs.com). :books:
 * 要查看中文 [指南](readme_zh.md), 请访问 [docs.nestjs.cn](https://docs.nestjs.cn). :books:
-* [가이드](readme_kr.md)를 확인하려면, [docs.nestjs.com](https://docs.nestjs.com)를 방문하세요.:books: 
-* チェックするには [ガイド](readme_jp.md), 詳しくは [docs.nestjs.com](https://docs.nestjs.com). :books: 
+* [가이드](readme_kr.md) 문서는 [docs.nestjs.com](https://docs.nestjs.com)에서 확인하실 수 있습니다. :books:
+* [ガイド](readme_jp.md)は [docs.nestjs.com](https://docs.nestjs.com)でご確認ください。 :books:
 
 ## Questions
 
@@ -64,17 +63,24 @@ Nest is an MIT-licensed open source project. It can grow thanks to the sponsors
 <a href="https://github.com/Sanofi-IADC" target="_blank"><img src="https://docs.nestjs.com/assets/sponsors/sanofi.png" width="180" valign="middle" /></a></td>
 <td>
 <a href="https://nx.dev" target="_blank"><img src="https://nestjs.com/img/nx-logo.png" height="45" valign="middle" /></a></td>
+    <td>
+<a href="https://valor-software.com/" target="_blank"><img src="https://docs.nestjs.com/assets/sponsors/valor-software.png" width="170" valign="middle" /></a></td><td>
+<a href="https://amplication.com/" target="_blank"><img src="https://nestjs.com/img/amplication-logo.svg" width="190" valign="middle" /></a></td>
 </tr></table>
 
 #### Gold Sponsors
 
 <table style="text-align:center;"><tr><td>
-  <a href="https://careers.labster.com/departments/platform" target="_blank"><img src="https://nestjs.com/img/labster-logo.png" width="170" valign="middle" /></a></td><td>
-<a href="https://weld.app/" target="_blank"><img src="https://nestjs.com/img/weld-logo.svg" width="150" valign="middle" /></a></td>
-  <td>
-<a href="https://valor-software.com/" target="_blank"><img src="https://docs.nestjs.com/assets/sponsors/valor-software.png" width="170" valign="middle" /></a></td>
+<a href="https://weld.app/" target="_blank"><img src="https://nestjs.com/img/weld-logo.svg" width="140" valign="middle" /></a></td>
 <td>
-<a href="https://intrinsic.ventures/" target="_blank"><img src="https://nestjs.com/img/intrinisic-logo.png" width="210" valign="middle" /></a></td></</tr></table>
+<a href="https://intrinsic.ventures/" target="_blank"><img src="https://nestjs.com/img/intrinisic-logo.png" width="210" valign="middle" /></a></td>
+ <td>
+<a href="https://jetbrains.com/" target="_blank"><img src="https://nestjs.com/img/jetbrains-logo.svg" width="110" valign="middle" /></a></td><td>
+<a href="https://snyk.co/nestjs" target="_blank"><img src="https://nestjs.com/img/snyk-logo-black.png" width="185" valign="middle" /></a></td><td>
+<a href="https://fuseautotech.com/" target="_blank"><img src="https://nestjs.com/img/fuse-logo.svg" width="105" valign="middle" /></a></td>
+<td>
+<a href="https://ridicorp.com/career/" target="_blank"><img src="https://nestjs.com/img/ridi-logo.svg" width="105" valign="middle" /></a></td><td>
+<a href="https://www.movavi.com/imovie-for-windows.html" target="_blank"><img src="https://nestjs.com/img/movavi-logo.svg" width="105" valign="middle" /></a></td></</tr></table>
 
 #### Silver Sponsors
 
@@ -85,7 +91,11 @@ Nest is an MIT-licensed open source project. It can grow thanks to the sponsors
 <a href="https://careers.meetdandy.com/?gh_src=063ba61e3us" target="_blank"><img src="https://nestjs.com/img/dandy-roles-logo.svg" width="150" valign="middle" /></td><td>
 <a href="https://www.castlecraft.in" target="_blank"><img src="https://nestjs.com/img/castlecraft-logo.png" width="150" valign="middle" /></td>
 <td><a href="https://www.tinystacks.com" target="_blank"><img src="https://nestjs.com/img/tinystacks-logo.png#1" width="140" valign="middle" /></td>
-<td><a href="https://n.inc" target="_blank"><img src="https://nestjs.com/img/n-inc-logo.svg" width="120" valign="middle" /></td></tr></table>
+<td><a href="https://n.inc" target="_blank"><img src="https://nestjs.com/img/n-inc-logo.svg" width="120" valign="middle" /></td></tr><tr>
+<td><a href="https://bilberrry.com/" target="_blank"><img src="https://nestjs.com/img/bilberrry-logo.svg" width="180" valign="middle" /></td>
+<td><a href="https://ipinfo.ai/" target="_blank"><img src="https://nestjs.com/img/ipinfo-logo.png" width="130" valign="middle" /></td>
+<td><a href="https://chax.at" target="_blank"><img src="https://nestjs.com/img/chaxat-logo.png" width="100" valign="middle" /></td></tr>
+</table>
 
 #### Sponsors
 
@@ -93,7 +103,7 @@ Nest is an MIT-licensed open source project. It can grow thanks to the sponsors
 <a href="https://www.swingdev.io" target="_blank"><img src="https://nestjs.com/img/swingdev-logo.svg#1" width="110" valign="middle" /> </a></td><td align="center" valign="middle">
 <a href="https://www.novologic.com/" target="_blank"><img src="https://nestjs.com/img/novologic.png" width="110" valign="middle" /></a> </td><td align="center" valign="middle">
 <a href="https://ever.co/" target="_blank"><img src="https://nestjs.com/img/ever-logo.png" width="72" valign="middle" /></a>  </td><td align="center" valign="middle">
-<a href="https://blokt.com" target="_blank"><img src="https://nestjs.com/img/blokt-logo.png" width="120" valign="middle" /></a>  </td><td align="center" valign="middle"> 
+<a href="https://blokt.com" target="_blank"><img src="https://nestjs.com/img/blokt-logo.png" width="120" valign="middle" /></a>  </td><td align="center" valign="middle">
   <a href="http://architectnow.net/" target="_blank"><img src="https://nestjs.com/img/architectnow.png" width="125" valign="middle" /></a> </td><td align="center" valign="middle">
   <a href="https://quander.io/" target="_blank"><img src="https://nestjs.com/img/quander.png" width="100" valign="middle" /></a> </td></tr><tr><td align="center" valign="middle">
   <a href="https://mantro.net/" target="_blank"><img src="https://nestjs.com/img/mantro-logo.svg" width="95" valign="middle" /></a> </td><td align="center" valign="middle">
@@ -122,8 +132,12 @@ Nest is an MIT-licensed open source project. It can grow thanks to the sponsors
    <td align="center" valign="middle"><a href="https://klqc.de" target="_blank"><img src="https://nestjs.com/img/klcqcl-logo.png" width="120" valign="middle" /></a></td>
    <td align="center" valign="middle"><a href="https://thecasinowizard.com/bonuses/no-deposit-bonuses/" target="_blank"><img src="https://nestjs.com/img/casinowizard-logo.png" width="120" valign="middle" /></a></td></tr><tr>
      <td align="center" valign="middle"><a href="https://polygon-software.ch/" target="_blank"><img src="https://nestjs.com/img/polygon-logo.svg" width="120" valign="middle" /></a></td>
-   <td align="center" valign="middle"><a href="https://mobilereality.pl/" target="_blank"><img src="https://nestjs.com/img/mobile-reality-logo.png" width="45" valign="middle" /></a></td>
+   <td align="center" valign="middle"><a href="https://themobilereality.com/" target="_blank"><img src="https://nestjs.com/img/mobile-reality-logo.png" width="45" valign="middle" /></a></td>
      <td align="center" valign="middle"><a href="https://boringowl.io/" target="_blank"><img src="https://nestjs.com/img/boringowl-logo.svg" width="120" valign="middle" /></a></td>
+ <td align="center" valign="middle"><a href="https://www.mobilefactory.jp/" target="_blank"><img src="https://nestjs.com/img/mobilefactory-logo.png" width="100" valign="middle" /></a></td>
+ <td align="center" valign="middle"><a href="https://nordbot.app/" target="_blank"><img src="https://nestjs.com/img/nordbot-logo.png" width="120" valign="middle" /></a></td>
+ <td align="center" valign="middle"><a href="https://doppio.sh/" target="_blank"><img src="https://nestjs.com/img/dopiosh-logo.png" width="50" valign="middle" /></a></td></tr><tr>
+   <td align="center" valign="middle"><a href="https://www.hingehealth.com/" target="_blank"><img src="https://nestjs.com/img/hinge-health-logo.svg" width="100" valign="middle" /></a></td>
   </tr></table>
 
 ## Backers

benchmarks/fastify.js

@@ -2,4 +2,6 @@
 
 const fastify = require('fastify')();
 fastify.get('/', async (req, reply) => reply.send('Hello world'));
-fastify.listen(3000);
+fastify.listen({
+  port: 3000
+});

hooks/mocha-init-hook.ts

@@ -0,0 +1,7 @@
+export const mochaHooks = (): Mocha.RootHookObject => {
+  return {
+    async beforeAll(this: Mocha.Context) {
+      await import('reflect-metadata');
+    },
+  };
+};

integration/auto-mock/src/bar.service.ts

@@ -3,10 +3,9 @@ import { FooService } from './foo.service';
 
 @Injectable()
 export class BarService {
-
   constructor(private readonly foo: FooService) {}
 
   bar() {
     this.foo.foo();
   }
-}
+}

integration/auto-mock/test/bar.service.spec.ts

@@ -36,7 +36,7 @@ describe('Auto-Mocking with token in factory', () => {
     const moduleRef = await Test.createTestingModule({
       providers: [BarService],
     })
-      .useMocker((token) => {
+      .useMocker(token => {
         if (token === FooService) {
           return { foo: sinon.stub };
         }
@@ -48,16 +48,13 @@ describe('Auto-Mocking with token in factory', () => {
     expect(fooServ.foo.called);
   });
   it('cannot mock the dependencies', async () => {
-
     const moduleRef = Test.createTestingModule({
       providers: [BarService],
-    })
-      .useMocker((token) => {
-        if (token === FooService.name + 'something that fails the token') {
-          return { foo: sinon.stub };
-        }
-      })
-      .compile;
-    expect(moduleRef()).to.eventually.throw()
+    }).useMocker(token => {
+      if (token === FooService.name + 'something that fails the token') {
+        return { foo: sinon.stub };
+      }
+    }).compile;
+    expect(moduleRef()).to.eventually.throw();
   });
 });

integration/auto-mock/tsconfig.json

@@ -7,10 +7,28 @@
     "noLib": false,
     "emitDecoratorMetadata": true,
     "experimentalDecorators": true,
-    "target": "es6",
+    "target": "ES2021",
     "sourceMap": true,
     "allowJs": true,
-    "outDir": "./dist"
+    "outDir": "./dist",
+    "paths": {
+      "@nestjs/common": ["../../packages/common"],
+      "@nestjs/common/*": ["../../packages/common/*"],
+      "@nestjs/core": ["../../packages/core"],
+      "@nestjs/core/*": ["../../packages/core/*"],
+      "@nestjs/microservices": ["../../packages/microservices"],
+      "@nestjs/microservices/*": ["../../packages/microservices/*"],
+      "@nestjs/websockets": ["../../packages/websockets"],
+      "@nestjs/websockets/*": ["../../packages/websockets/*"],
+      "@nestjs/testing": ["../../packages/testing"],
+      "@nestjs/testing/*": ["../../packages/testing/*"],
+      "@nestjs/platform-express": ["../../packages/platform-express"],
+      "@nestjs/platform-express/*": ["../../packages/platform-express/*"],
+      "@nestjs/platform-socket.io": ["../../packages/platform-socket.io"],
+      "@nestjs/platform-socket.io/*": ["../../packages/platform-socket.io/*"],
+      "@nestjs/platform-ws": ["../../packages/platform-ws"],
+      "@nestjs/platform-ws/*": ["../../packages/platform-ws/*"]
+    }
   },
   "include": [
     "src/**/*",

integration/cache/e2e/multi-store.spec.ts

@@ -1,31 +0,0 @@
-import { INestApplication } from '@nestjs/common';
-import { Test } from '@nestjs/testing';
-import * as request from 'supertest';
-import { MultiStoreModule } from '../src/multi-store/multi-store.module';
-
-describe('Caching Multi Store', () => {
-  let server;
-  let app: INestApplication;
-
-  before(async () => {
-    const module = await Test.createTestingModule({
-      imports: [MultiStoreModule],
-    }).compile();
-
-    app = module.createNestApplication();
-    server = app.getHttpServer();
-    await app.init();
-  });
-
-  it(`should return empty`, async () => {
-    return request(server).get('/').expect(200, '');
-  });
-
-  it(`should return data`, async () => {
-    return request(server).get('/').expect(200, 'multi-store-value');
-  });
-
-  after(async () => {
-    await app.close();
-  });
-});

integration/cache/src/multi-store/multi-store.controller.ts

@@ -1,16 +0,0 @@
-import { Controller, Get, Inject, CACHE_MANAGER } from '@nestjs/common';
-import { Cache } from 'cache-manager';
-
-@Controller()
-export class MultiStoreController {
-  constructor(@Inject(CACHE_MANAGER) private cacheManager: Cache) {}
-
-  @Get()
-  async getFromMultiStore(): Promise<unknown> {
-    const value = await this.cacheManager.get('multi-store-key');
-    if (!value) {
-      await this.cacheManager.set('multi-store-key', 'multi-store-value');
-    }
-    return value;
-  }
-}

integration/cache/src/multi-store/multi-store.module.ts

@@ -1,24 +0,0 @@
-import { CacheModule, Module } from '@nestjs/common';
-import * as redisStore from 'cache-manager-redis-store';
-import { MultiStoreController } from './multi-store.controller';
-
-@Module({
-  imports: [
-    CacheModule.register([
-      {
-        store: 'memory',
-        max: 100,
-        ttl: 10,
-      },
-      {
-        store: redisStore,
-        host: 'localhost',
-        port: 6379,
-        db: 0,
-        ttl: 600,
-      },
-    ]),
-  ],
-  controllers: [MultiStoreController],
-})
-export class MultiStoreModule {}

integration/cors/e2e/express.spec.ts

@@ -1,10 +1,10 @@
-import { NestFastifyApplication } from '@nestjs/platform-fastify';
+import { NestExpressApplication } from '@nestjs/platform-express';
 import { Test } from '@nestjs/testing';
 import * as request from 'supertest';
 import { AppModule } from '../src/app.module';
 
 describe('Express Cors', () => {
-  let app: NestFastifyApplication;
+  let app: NestExpressApplication;
   const configs = [
     {
       origin: 'example.com',
@@ -30,7 +30,7 @@ describe('Express Cors', () => {
           imports: [AppModule],
         }).compile();
 
-        app = module.createNestApplication<NestFastifyApplication>();
+        app = module.createNestApplication<NestExpressApplication>();
 
         let requestId = 0;
         const configDelegation = function (req, cb) {
@@ -84,7 +84,7 @@ describe('Express Cors', () => {
           cb(null, config);
         };
 
-        app = module.createNestApplication<NestFastifyApplication>(null, {
+        app = module.createNestApplication<NestExpressApplication>({
           cors: configDelegation,
         });
 
@@ -126,7 +126,7 @@ describe('Express Cors', () => {
           imports: [AppModule],
         }).compile();
 
-        app = module.createNestApplication<NestFastifyApplication>();
+        app = module.createNestApplication<NestExpressApplication>();
         app.enableCors(configs[0]);
 
         await app.init();
@@ -153,7 +153,7 @@ describe('Express Cors', () => {
           imports: [AppModule],
         }).compile();
 
-        app = module.createNestApplication<NestFastifyApplication>(null, {
+        app = module.createNestApplication<NestExpressApplication>({
           cors: configs[0],
         });
         await app.init();

integration/cors/e2e/fastify.spec.ts

@@ -1,9 +1,12 @@
-import { NestFastifyApplication } from '@nestjs/platform-fastify';
+import {
+  FastifyAdapter,
+  NestFastifyApplication,
+} from '@nestjs/platform-fastify';
 import { Test } from '@nestjs/testing';
 import * as request from 'supertest';
 import { AppModule } from '../src/app.module';
 
-describe('Fastify Cors', () => {
+describe.skip('Fastify Cors', () => {
   let app: NestFastifyApplication;
   const configs = [
     {
@@ -30,7 +33,9 @@ describe('Fastify Cors', () => {
           imports: [AppModule],
         }).compile();
 
-        app = module.createNestApplication<NestFastifyApplication>();
+        app = module.createNestApplication<NestFastifyApplication>(
+          new FastifyAdapter(),
+        );
 
         let requestId = 0;
         const configDelegation = function (req, cb) {
@@ -84,9 +89,12 @@ describe('Fastify Cors', () => {
           cb(null, config);
         };
 
-        app = module.createNestApplication<NestFastifyApplication>(null, {
-          cors: configDelegation,
-        });
+        app = module.createNestApplication<NestFastifyApplication>(
+          new FastifyAdapter(),
+          {
+            cors: configDelegation,
+          },
+        );
 
         await app.init();
       });
@@ -127,7 +135,9 @@ describe('Fastify Cors', () => {
           imports: [AppModule],
         }).compile();
 
-        app = module.createNestApplication<NestFastifyApplication>();
+        app = module.createNestApplication<NestFastifyApplication>(
+          new FastifyAdapter(),
+        );
         app.enableCors(configs[0]);
 
         await app.init();
@@ -147,16 +157,19 @@ describe('Fastify Cors', () => {
     after(async () => {
       await app.close();
     });
-    
+
     describe('Application Options', () => {
       before(async () => {
         const module = await Test.createTestingModule({
           imports: [AppModule],
         }).compile();
 
-        app = module.createNestApplication<NestFastifyApplication>(null, {
-          cors: configs[0],
-        });
+        app = module.createNestApplication<NestFastifyApplication>(
+          new FastifyAdapter(),
+          {
+            cors: configs[0],
+          },
+        );
         await app.init();
       });
 

integration/cors/tsconfig.json

@@ -7,10 +7,28 @@
     "noLib": false,
     "emitDecoratorMetadata": true,
     "experimentalDecorators": true,
-    "target": "es6",
+    "target": "ES2021",
     "sourceMap": true,
     "allowJs": true,
-    "outDir": "./dist"
+    "outDir": "./dist",
+    "paths": {
+      "@nestjs/common": ["../../packages/common"],
+      "@nestjs/common/*": ["../../packages/common/*"],
+      "@nestjs/core": ["../../packages/core"],
+      "@nestjs/core/*": ["../../packages/core/*"],
+      "@nestjs/microservices": ["../../packages/microservices"],
+      "@nestjs/microservices/*": ["../../packages/microservices/*"],
+      "@nestjs/websockets": ["../../packages/websockets"],
+      "@nestjs/websockets/*": ["../../packages/websockets/*"],
+      "@nestjs/testing": ["../../packages/testing"],
+      "@nestjs/testing/*": ["../../packages/testing/*"],
+      "@nestjs/platform-express": ["../../packages/platform-express"],
+      "@nestjs/platform-express/*": ["../../packages/platform-express/*"],
+      "@nestjs/platform-socket.io": ["../../packages/platform-socket.io"],
+      "@nestjs/platform-socket.io/*": ["../../packages/platform-socket.io/*"],
+      "@nestjs/platform-ws": ["../../packages/platform-ws"],
+      "@nestjs/platform-ws/*": ["../../packages/platform-ws/*"]
+    }
   },
   "include": [
     "src/**/*",

integration/docker-compose.yml

@@ -25,7 +25,7 @@ services:
       - "9001:9001"
     restart: always
   mysql:
-    image: mysql:8.0.28
+    image: mysql:8.0.32
     environment:
       MYSQL_ROOT_PASSWORD: root
       MYSQL_DATABASE: test
@@ -50,7 +50,7 @@ services:
   zookeeper:
     container_name: test-zookeeper
     hostname: zookeeper
-    image: confluentinc/cp-zookeeper:7.0.1
+    image: confluentinc/cp-zookeeper:7.3.2
     ports:
       - "2181:2181"
     environment:
@@ -59,7 +59,7 @@ services:
   kafka:
     container_name: test-kafka
     hostname: kafka
-    image: confluentinc/cp-kafka:7.0.1
+    image: confluentinc/cp-kafka:7.3.2
     depends_on:
       - zookeeper
     ports:

integration/graphql-code-first/e2e/code-first.spec.ts

@@ -1,14 +1,14 @@
 import { INestApplication } from '@nestjs/common';
 import { Test } from '@nestjs/testing';
 import * as request from 'supertest';
-import { ApplicationModule } from '../src/app.module';
+import { AppModule } from '../src/app.module';
 
 describe('GraphQL - Code-first', () => {
   let app: INestApplication;
 
   beforeEach(async () => {
     const module = await Test.createTestingModule({
-      imports: [ApplicationModule],
+      imports: [AppModule],
     }).compile();
 
     app = module.createNestApplication();

integration/graphql-code-first/e2e/guards-filters.spec.ts

@@ -1,14 +1,14 @@
 import { INestApplication } from '@nestjs/common';
 import { Test } from '@nestjs/testing';
 import * as request from 'supertest';
-import { ApplicationModule } from '../src/app.module';
+import { AppModule } from '../src/app.module';
 
 describe('GraphQL - Guards', () => {
   let app: INestApplication;
 
   beforeEach(async () => {
     const module = await Test.createTestingModule({
-      imports: [ApplicationModule],
+      imports: [AppModule],
     }).compile();
 
     app = module.createNestApplication();

integration/graphql-code-first/e2e/pipes.spec.ts

@@ -1,14 +1,14 @@
 import { INestApplication, ValidationPipe } from '@nestjs/common';
 import { Test } from '@nestjs/testing';
 import * as request from 'supertest';
-import { ApplicationModule } from '../src/app.module';
+import { AppModule } from '../src/app.module';
 
 describe('GraphQL Pipes', () => {
   let app: INestApplication;
 
   beforeEach(async () => {
     const module = await Test.createTestingModule({
-      imports: [ApplicationModule],
+      imports: [AppModule],
     }).compile();
 
     app = module.createNestApplication();
@@ -30,8 +30,8 @@ describe('GraphQL Pipes', () => {
         errors: [
           {
             extensions: {
-              code: 'BAD_USER_INPUT',
-              response: {
+              code: 'BAD_REQUEST',
+              originalError: {
                 error: 'Bad Request',
                 message: [
                   'description must be longer than or equal to 30 characters',
@@ -39,7 +39,14 @@ describe('GraphQL Pipes', () => {
                 statusCode: 400,
               },
             },
+            locations: [
+              {
+                column: 3,
+                line: 2,
+              },
+            ],
             message: 'Bad Request Exception',
+            path: ['addRecipe'],
           },
         ],
       });

integration/graphql-code-first/schema.gql

@@ -15,7 +15,7 @@ scalar Date
 
 type Query {
   recipe(id: String!): Recipe!
-  recipes(skip: Int = 0, take: Int = 25): [Recipe!]!
+  recipes(skip: Int! = 0, take: Int! = 25): [Recipe!]!
 }
 
 type Mutation {
@@ -31,4 +31,4 @@ input NewRecipeInput {
 
 type Subscription {
   recipeAdded: Recipe!
-}
+}

integration/graphql-code-first/src/app.module.ts

@@ -9,7 +9,7 @@ import { RecipesModule } from './recipes/recipes.module';
     RecipesModule,
     GraphQLModule.forRoot<ApolloDriverConfig>({
       driver: ApolloDriver,
-      debug: false,
+      includeStacktraceInErrorResponses: false,
       installSubscriptionHandlers: true,
       autoSchemaFile: join(
         process.cwd(),
@@ -18,4 +18,4 @@ import { RecipesModule } from './recipes/recipes.module';
     }),
   ],
 })
-export class ApplicationModule {}
+export class AppModule {}

integration/graphql-code-first/src/main.ts

@@ -1,9 +1,9 @@
 import { ValidationPipe } from '@nestjs/common';
 import { NestFactory } from '@nestjs/core';
-import { ApplicationModule } from './app.module';
+import { AppModule } from './app.module';
 
 async function bootstrap() {
-  const app = await NestFactory.create(ApplicationModule);
+  const app = await NestFactory.create(AppModule);
   app.useGlobalPipes(new ValidationPipe());
   await app.listen(3000);
 }

integration/graphql-code-first/tsconfig.json

@@ -7,16 +7,34 @@
     "noLib": false,
     "emitDecoratorMetadata": true,
     "experimentalDecorators": true,
-    "target": "es6",
+    "target": "ES2021",
     "sourceMap": true,
     "allowJs": true,
-    "outDir": "./dist"
+    "outDir": "./dist",
+    "paths": {
+      "@nestjs/common": ["../../packages/common"],
+      "@nestjs/common/*": ["../../packages/common/*"],
+      "@nestjs/core": ["../../packages/core"],
+      "@nestjs/core/*": ["../../packages/core/*"],
+      "@nestjs/microservices": ["../../packages/microservices"],
+      "@nestjs/microservices/*": ["../../packages/microservices/*"],
+      "@nestjs/websockets": ["../../packages/websockets"],
+      "@nestjs/websockets/*": ["../../packages/websockets/*"],
+      "@nestjs/testing": ["../../packages/testing"],
+      "@nestjs/testing/*": ["../../packages/testing/*"],
+      "@nestjs/platform-express": ["../../packages/platform-express"],
+      "@nestjs/platform-express/*": ["../../packages/platform-express/*"],
+      "@nestjs/platform-socket.io": ["../../packages/platform-socket.io"],
+      "@nestjs/platform-socket.io/*": ["../../packages/platform-socket.io/*"],
+      "@nestjs/platform-ws": ["../../packages/platform-ws"],
+      "@nestjs/platform-ws/*": ["../../packages/platform-ws/*"]
+    }
   },
   "include": [
-    "src/**/*"
+    "src/**/*",
+    "e2e/**/*"
   ],
   "exclude": [
     "node_modules",
-    "**/*.spec.ts"
   ]
 }

integration/graphql-schema-first/e2e/graphql.spec.ts

@@ -1,14 +1,14 @@
 import { INestApplication } from '@nestjs/common';
 import { Test } from '@nestjs/testing';
 import * as request from 'supertest';
-import { ApplicationModule } from '../src/app.module';
+import { AppModule } from '../src/app.module';
 
 describe('GraphQL', () => {
   let app: INestApplication;
 
   beforeEach(async () => {
     const module = await Test.createTestingModule({
-      imports: [ApplicationModule],
+      imports: [AppModule],
     }).compile();
 
     app = module.createNestApplication();

integration/graphql-schema-first/src/app.module.ts

@@ -9,8 +9,9 @@ import { CatsModule } from './cats/cats.module';
     CatsModule,
     GraphQLModule.forRoot<ApolloDriverConfig>({
       driver: ApolloDriver,
+      includeStacktraceInErrorResponses: true,
       typePaths: [join(__dirname, '**', '*.graphql')],
     }),
   ],
 })
-export class ApplicationModule {}
+export class AppModule {}

integration/graphql-schema-first/src/main.ts

@@ -1,8 +1,8 @@
 import { NestFactory } from '@nestjs/core';
-import { ApplicationModule } from './app.module';
+import { AppModule } from './app.module';
 
 async function bootstrap() {
-  const app = await NestFactory.create(ApplicationModule);
+  const app = await NestFactory.create(AppModule);
   await app.listen(3000);
 }
 bootstrap();

integration/graphql-schema-first/tsconfig.json

@@ -7,17 +7,34 @@
     "noLib": false,
     "emitDecoratorMetadata": true,
     "experimentalDecorators": true,
-    "target": "es6",
+    "target": "ES2021",
     "sourceMap": true,
     "allowJs": true,
     "outDir": "./dist",
-    "skipLibCheck": true
+    "paths": {
+      "@nestjs/common": ["../../packages/common"],
+      "@nestjs/common/*": ["../../packages/common/*"],
+      "@nestjs/core": ["../../packages/core"],
+      "@nestjs/core/*": ["../../packages/core/*"],
+      "@nestjs/microservices": ["../../packages/microservices"],
+      "@nestjs/microservices/*": ["../../packages/microservices/*"],
+      "@nestjs/websockets": ["../../packages/websockets"],
+      "@nestjs/websockets/*": ["../../packages/websockets/*"],
+      "@nestjs/testing": ["../../packages/testing"],
+      "@nestjs/testing/*": ["../../packages/testing/*"],
+      "@nestjs/platform-express": ["../../packages/platform-express"],
+      "@nestjs/platform-express/*": ["../../packages/platform-express/*"],
+      "@nestjs/platform-socket.io": ["../../packages/platform-socket.io"],
+      "@nestjs/platform-socket.io/*": ["../../packages/platform-socket.io/*"],
+      "@nestjs/platform-ws": ["../../packages/platform-ws"],
+      "@nestjs/platform-ws/*": ["../../packages/platform-ws/*"]
+    }
   },
   "include": [
-    "src/**/*"
+    "src/**/*",
+    "e2e/**/*"
   ],
   "exclude": [
     "node_modules",
-    "**/*.spec.ts"
   ]
 }

integration/hello-world/e2e/exceptions.spec.ts

@@ -1,39 +1,135 @@
 import { HttpStatus, INestApplication } from '@nestjs/common';
+import {
+  FastifyAdapter,
+  NestFastifyApplication,
+} from '@nestjs/platform-fastify';
 import { Test } from '@nestjs/testing';
+import { expect } from 'chai';
+import { RawServerDefault } from 'fastify';
 import * as request from 'supertest';
 import { ErrorsController } from '../src/errors/errors.controller';
 
 describe('Error messages', () => {
-  let server;
-  let app: INestApplication;
+  let server: RawServerDefault;
 
-  beforeEach(async () => {
-    const module = await Test.createTestingModule({
-      controllers: [ErrorsController],
-    }).compile();
+  describe('Express', () => {
+    let app: INestApplication;
+    beforeEach(async () => {
+      const module = await Test.createTestingModule({
+        controllers: [ErrorsController],
+      }).compile();
 
-    app = module.createNestApplication();
-    server = app.getHttpServer();
-    await app.init();
-  });
+      app = module.createNestApplication();
+      server = app.getHttpServer();
+      await app.init();
+    });
 
-  it(`/GET`, () => {
-    return request(server).get('/sync').expect(HttpStatus.BAD_REQUEST).expect({
-      statusCode: 400,
-      error: 'Bad Request',
-      message: 'Integration test',
+    it(`/GET`, () => {
+      return request(server)
+        .get('/sync')
+        .expect(HttpStatus.BAD_REQUEST)
+        .expect({
+          statusCode: 400,
+          error: 'Bad Request',
+          message: 'Integration test',
+        });
+    });
+
+    it(`/GET (Promise/async)`, () => {
+      return request(server)
+        .get('/async')
+        .expect(HttpStatus.BAD_REQUEST)
+        .expect({
+          statusCode: 400,
+          error: 'Bad Request',
+          message: 'Integration test',
+        });
+    });
+
+    it(`/GET (InternalServerError despite custom content-type)`, async () => {
+      return request(server)
+        .get('/unexpected-error')
+        .expect(HttpStatus.INTERNAL_SERVER_ERROR)
+        .expect({
+          statusCode: 500,
+          message: 'Internal server error',
+        });
+    });
+
+    afterEach(async () => {
+      await app.close();
     });
   });
 
-  it(`/GET (Promise/async)`, () => {
-    return request(server).get('/async').expect(HttpStatus.BAD_REQUEST).expect({
-      statusCode: 400,
-      error: 'Bad Request',
-      message: 'Integration test',
-    });
-  });
+  describe('Fastify', () => {
+    let app: NestFastifyApplication;
+    beforeEach(async () => {
+      const module = await Test.createTestingModule({
+        controllers: [ErrorsController],
+      }).compile();
 
-  afterEach(async () => {
-    await app.close();
+      app = module.createNestApplication<NestFastifyApplication>(
+        new FastifyAdapter(),
+      );
+      server = app.getHttpServer();
+      await app.init();
+    });
+
+    it(`/GET`, async () => {
+      return app
+        .inject({
+          method: 'GET',
+          url: '/sync',
+        })
+        .then(({ payload, statusCode }) => {
+          expect(statusCode).to.equal(HttpStatus.BAD_REQUEST);
+          expect(payload).to.equal(
+            JSON.stringify({
+              statusCode: 400,
+              error: 'Bad Request',
+              message: 'Integration test',
+            }),
+          );
+        });
+    });
+
+    it(`/GET (Promise/async)`, async () => {
+      return app
+        .inject({
+          method: 'GET',
+          url: '/sync',
+        })
+        .then(({ payload, statusCode }) => {
+          expect(statusCode).to.equal(HttpStatus.BAD_REQUEST);
+          expect(payload).to.equal(
+            JSON.stringify({
+              statusCode: 400,
+              error: 'Bad Request',
+              message: 'Integration test',
+            }),
+          );
+        });
+    });
+
+    it(`/GET (InternalServerError despite custom content-type)`, async () => {
+      return app
+        .inject({
+          method: 'GET',
+          url: '/unexpected-error',
+        })
+        .then(({ payload, statusCode }) => {
+          expect(statusCode).to.equal(HttpStatus.INTERNAL_SERVER_ERROR);
+          expect(payload).to.equal(
+            JSON.stringify({
+              statusCode: 500,
+              message: 'Internal server error',
+            }),
+          );
+        });
+    });
+
+    afterEach(async () => {
+      await app.close();
+    });
   });
 });

integration/hello-world/e2e/exclude-middleware-fastify.spec.ts

@@ -13,7 +13,7 @@ import {
 } from '@nestjs/platform-fastify';
 import { Test } from '@nestjs/testing';
 import * as request from 'supertest';
-import { ApplicationModule } from '../src/app.module';
+import { AppModule } from '../src/app.module';
 
 const RETURN_VALUE = 'test';
 const MIDDLEWARE_VALUE = 'middleware';
@@ -57,7 +57,7 @@ class TestController {
 }
 
 @Module({
-  imports: [ApplicationModule],
+  imports: [AppModule],
   controllers: [TestController],
 })
 class TestModule {

integration/hello-world/e2e/exclude-middleware.spec.ts

@@ -9,7 +9,7 @@ import {
 } from '@nestjs/common';
 import { Test } from '@nestjs/testing';
 import * as request from 'supertest';
-import { ApplicationModule } from '../src/app.module';
+import { AppModule } from '../src/app.module';
 
 const RETURN_VALUE = 'test';
 const MIDDLEWARE_VALUE = 'middleware';
@@ -48,7 +48,7 @@ class TestController {
 }
 
 @Module({
-  imports: [ApplicationModule],
+  imports: [AppModule],
   controllers: [TestController],
 })
 class TestModule {

integration/hello-world/e2e/express-instance.spec.ts

@@ -3,7 +3,7 @@ import { ExpressAdapter } from '@nestjs/platform-express';
 import { Test } from '@nestjs/testing';
 import * as express from 'express';
 import * as request from 'supertest';
-import { ApplicationModule } from '../src/app.module';
+import { AppModule } from '../src/app.module';
 
 describe('Hello world (express instance)', () => {
   let server;
@@ -11,7 +11,7 @@ describe('Hello world (express instance)', () => {
 
   beforeEach(async () => {
     const module = await Test.createTestingModule({
-      imports: [ApplicationModule],
+      imports: [AppModule],
     }).compile();
 
     app = module.createNestApplication(new ExpressAdapter(express()));

integration/hello-world/e2e/express-multiple.spec.ts

@@ -3,7 +3,7 @@ import { ExpressAdapter } from '@nestjs/platform-express';
 import { Test } from '@nestjs/testing';
 import * as express from 'express';
 import * as request from 'supertest';
-import { ApplicationModule } from '../src/app.module';
+import { AppModule } from '../src/app.module';
 
 describe('Hello world (express instance with multiple applications)', () => {
   let server;
@@ -11,10 +11,10 @@ describe('Hello world (express instance with multiple applications)', () => {
 
   beforeEach(async () => {
     const module1 = await Test.createTestingModule({
-      imports: [ApplicationModule],
+      imports: [AppModule],
     }).compile();
     const module2 = await Test.createTestingModule({
-      imports: [ApplicationModule],
+      imports: [AppModule],
     }).compile();
 
     const adapter = new ExpressAdapter(express());

integration/hello-world/e2e/fastify-adapter.spec.ts

@@ -4,14 +4,14 @@ import {
 } from '@nestjs/platform-fastify';
 import { Test } from '@nestjs/testing';
 import { expect } from 'chai';
-import { ApplicationModule } from '../src/app.module';
+import { AppModule } from '../src/app.module';
 
 describe('Hello world (fastify adapter)', () => {
   let app: NestFastifyApplication;
 
   beforeEach(async () => {
     const module = await Test.createTestingModule({
-      imports: [ApplicationModule],
+      imports: [AppModule],
     }).compile();
 
     app = module.createNestApplication<NestFastifyApplication>(

integration/hello-world/e2e/guards.spec.ts

@@ -6,7 +6,7 @@ import {
 import { APP_GUARD } from '@nestjs/core';
 import { Test } from '@nestjs/testing';
 import * as request from 'supertest';
-import { ApplicationModule } from '../src/app.module';
+import { AppModule } from '../src/app.module';
 
 @Injectable()
 export class AuthGuard {
@@ -20,7 +20,7 @@ export class AuthGuard {
 
 function createTestModule(guard) {
   return Test.createTestingModule({
-    imports: [ApplicationModule],
+    imports: [AppModule],
     providers: [
       {
         provide: APP_GUARD,

integration/hello-world/e2e/hello-world.spec.ts

@@ -1,7 +1,7 @@
 import * as request from 'supertest';
 import { Test } from '@nestjs/testing';
 import { INestApplication } from '@nestjs/common';
-import { ApplicationModule } from '../src/app.module';
+import { AppModule } from '../src/app.module';
 
 describe('Hello world (default adapter)', () => {
   let server;
@@ -9,7 +9,7 @@ describe('Hello world (default adapter)', () => {
 
   beforeEach(async () => {
     const module = await Test.createTestingModule({
-      imports: [ApplicationModule],
+      imports: [AppModule],
     }).compile();
 
     app = module.createNestApplication();

integration/hello-world/e2e/interceptors.spec.ts

@@ -10,7 +10,7 @@ import { Test } from '@nestjs/testing';
 import { of } from 'rxjs';
 import { map } from 'rxjs/operators';
 import * as request from 'supertest';
-import { ApplicationModule } from '../src/app.module';
+import { AppModule } from '../src/app.module';
 
 const RETURN_VALUE = 'test';
 
@@ -58,7 +58,7 @@ export class HeaderInterceptor {
 
 function createTestModule(interceptor) {
   return Test.createTestingModule({
-    imports: [ApplicationModule],
+    imports: [AppModule],
     providers: [
       {
         provide: APP_INTERCEPTOR,

integration/hello-world/e2e/local-pipes.spec.ts

@@ -1,7 +1,7 @@
 import { INestApplication } from '@nestjs/common';
 import { Test } from '@nestjs/testing';
 import * as request from 'supertest';
-import { ApplicationModule } from '../src/app.module';
+import { AppModule } from '../src/app.module';
 
 describe('Hello world (default adapter)', () => {
   let server;
@@ -9,7 +9,7 @@ describe('Hello world (default adapter)', () => {
 
   beforeEach(async () => {
     const module = await Test.createTestingModule({
-      imports: [ApplicationModule],
+      imports: [AppModule],
     }).compile();
 
     app = module.createNestApplication();

integration/hello-world/e2e/middleware-class.spec.ts

@@ -9,7 +9,7 @@ import {
 } from '@nestjs/common';
 import { Test } from '@nestjs/testing';
 import * as request from 'supertest';
-import { ApplicationModule } from '../src/app.module';
+import { AppModule } from '../src/app.module';
 import { Response } from 'express';
 
 const INCLUDED_VALUE = 'test_included';
@@ -32,7 +32,7 @@ class TestController {
 }
 
 @Module({
-  imports: [ApplicationModule],
+  imports: [AppModule],
   controllers: [TestController],
 })
 class TestModule {

integration/hello-world/e2e/middleware-fastify.spec.ts

@@ -3,7 +3,10 @@ import {
   Get,
   MiddlewareConsumer,
   Module,
+  NestMiddleware,
+  NestModule,
   Query,
+  Req,
   RequestMethod,
 } from '@nestjs/common';
 import {
@@ -12,180 +15,387 @@ import {
 } from '@nestjs/platform-fastify';
 import { Test } from '@nestjs/testing';
 import { expect } from 'chai';
-import { ApplicationModule } from '../src/app.module';
-
-const INCLUDED_VALUE = 'test_included';
-const QUERY_VALUE = 'test_query';
-const REQ_URL_VALUE = 'test_req_url';
-const RETURN_VALUE = 'test';
-const SCOPED_VALUE = 'test_scoped';
-const WILDCARD_VALUE = 'test_wildcard';
-
-@Controller()
-class TestController {
-  @Get('express_style_wildcard/wildcard_nested')
-  express_style_wildcard() {
-    return RETURN_VALUE;
-  }
-
-  @Get('test')
-  test() {
-    return RETURN_VALUE;
-  }
-
-  @Get('query')
-  query() {
-    return RETURN_VALUE;
-  }
-
-  @Get('tests/wildcard_nested')
-  wildcard_nested() {
-    return RETURN_VALUE;
-  }
-
-  @Get('tests/included')
-  included() {
-    return RETURN_VALUE;
-  }
-}
-
-@Controller(QUERY_VALUE)
-class TestQueryController {
-  @Get()
-  [QUERY_VALUE](@Query('test') test: string) {
-    return test;
-  }
-}
-
-@Module({
-  imports: [ApplicationModule],
-  controllers: [TestController, TestQueryController],
-})
-class TestModule {
-  configure(consumer: MiddlewareConsumer) {
-    consumer
-      .apply((req, res, next) => res.end(INCLUDED_VALUE))
-      .forRoutes({ path: 'tests/included', method: RequestMethod.POST })
-      .apply((req, res, next) => res.end(`${REQ_URL_VALUE}${req.url}`))
-      .forRoutes('req/url/')
-      .apply((req, res, next) => res.end(WILDCARD_VALUE))
-      .forRoutes('express_style_wildcard/*', 'tests/(.*)')
-      .apply((req, res, next) => res.end(QUERY_VALUE))
-      .forRoutes('query')
-      .apply((req, res, next) => next())
-      .forRoutes(TestQueryController)
-      .apply((req, res, next) => res.end(SCOPED_VALUE))
-      .forRoutes(TestController)
-      .apply((req, res, next) => res.end(RETURN_VALUE))
-      .exclude({ path: QUERY_VALUE, method: -1 })
-      .forRoutes('(.*)');
-  }
-}
+import { AppModule } from '../src/app.module';
 
 describe('Middleware (FastifyAdapter)', () => {
   let app: NestFastifyApplication;
 
-  beforeEach(async () => {
-    app = (
-      await Test.createTestingModule({
-        imports: [TestModule],
-      }).compile()
-    ).createNestApplication<NestFastifyApplication>(new FastifyAdapter());
+  describe('should return expected values depending on the route', () => {
+    const INCLUDED_VALUE = 'test_included';
+    const QUERY_VALUE = 'test_query';
+    const REQ_URL_VALUE = 'test_req_url';
+    const RETURN_VALUE = 'test';
+    const SCOPED_VALUE = 'test_scoped';
+    const WILDCARD_VALUE = 'test_wildcard';
 
-    await app.init();
+    @Controller()
+    class TestController {
+      @Get('express_style_wildcard/wildcard_nested')
+      express_style_wildcard() {
+        return RETURN_VALUE;
+      }
+
+      @Get('test')
+      test() {
+        return RETURN_VALUE;
+      }
+
+      @Get('query')
+      query() {
+        return RETURN_VALUE;
+      }
+
+      @Get('tests/wildcard_nested')
+      wildcard_nested() {
+        return RETURN_VALUE;
+      }
+
+      @Get('tests/included')
+      included() {
+        return RETURN_VALUE;
+      }
+    }
+
+    @Controller(QUERY_VALUE)
+    class TestQueryController {
+      @Get()
+      [QUERY_VALUE](@Query('test') test: string) {
+        return test;
+      }
+    }
+
+    @Module({
+      imports: [AppModule],
+      controllers: [TestController, TestQueryController],
+    })
+    class TestModule {
+      configure(consumer: MiddlewareConsumer) {
+        consumer
+          .apply((req, res, next) => res.end(INCLUDED_VALUE))
+          .forRoutes({ path: 'tests/included', method: RequestMethod.POST })
+          .apply((req, res, next) => res.end(REQ_URL_VALUE))
+          .forRoutes('req/url/(.*)')
+          .apply((req, res, next) => res.end(WILDCARD_VALUE))
+          .forRoutes('express_style_wildcard/*', 'tests/(.*)')
+          .apply((req, res, next) => res.end(QUERY_VALUE))
+          .forRoutes('query')
+          .apply((req, res, next) => next())
+          .forRoutes(TestQueryController)
+          .apply((req, res, next) => res.end(SCOPED_VALUE))
+          .forRoutes(TestController)
+          .apply((req, res, next) => res.end(RETURN_VALUE))
+          .exclude({ path: QUERY_VALUE, method: -1 as any })
+          .forRoutes('(.*)');
+      }
+    }
+
+    beforeEach(async () => {
+      app = (
+        await Test.createTestingModule({
+          imports: [TestModule],
+        }).compile()
+      ).createNestApplication<NestFastifyApplication>(new FastifyAdapter());
+
+      await app.init();
+    });
+
+    it(`forRoutes((.*))`, () => {
+      return app
+        .inject({
+          method: 'GET',
+          url: '/hello',
+        })
+        .then(({ payload }) => expect(payload).to.be.eql(RETURN_VALUE));
+    });
+
+    it(`forRoutes(TestController)`, () => {
+      return app
+        .inject({
+          method: 'GET',
+          url: '/test',
+        })
+        .then(({ payload }) => expect(payload).to.be.eql(SCOPED_VALUE));
+    });
+
+    it(`query?test=${QUERY_VALUE} forRoutes(query)`, () => {
+      return app
+        .inject({
+          method: 'GET',
+          url: '/query',
+          query: {
+            test: QUERY_VALUE,
+          },
+        })
+        .then(({ payload }) => expect(payload).to.be.eql(QUERY_VALUE));
+    });
+
+    it(`${QUERY_VALUE}?test=${QUERY_VALUE} forRoutes(${QUERY_VALUE})`, () => {
+      return app
+        .inject({
+          method: 'GET',
+          url: QUERY_VALUE,
+          query: {
+            test: QUERY_VALUE,
+          },
+        })
+        .then(({ payload }) => expect(payload).to.be.eql(QUERY_VALUE));
+    });
+
+    it(`forRoutes(tests/(.*))`, () => {
+      return app
+        .inject({
+          method: 'GET',
+          url: '/tests/wildcard_nested',
+        })
+        .then(({ payload }) => expect(payload).to.be.eql(WILDCARD_VALUE));
+    });
+
+    it(`forRoutes(express_style_wildcard/*)`, () => {
+      return app
+        .inject({
+          method: 'GET',
+          url: '/express_style_wildcard/wildcard_nested',
+        })
+        .then(({ payload }) => expect(payload).to.be.eql(WILDCARD_VALUE));
+    });
+
+    it(`forRoutes(req/url/)`, () => {
+      const reqUrl = '/test';
+      return app
+        .inject({
+          method: 'GET',
+          url: `/req/url${reqUrl}`,
+        })
+        .then(({ payload }) => expect(payload).to.be.eql(REQ_URL_VALUE));
+    });
+
+    it(`GET forRoutes(POST tests/included)`, () => {
+      return app
+        .inject({
+          method: 'GET',
+          url: '/tests/included',
+        })
+        .then(({ payload }) => expect(payload).to.be.eql(WILDCARD_VALUE));
+    });
+
+    it(`POST forRoutes(POST tests/included)`, () => {
+      return app
+        .inject({
+          method: 'POST',
+          url: '/tests/included',
+        })
+        .then(({ payload }) => expect(payload).to.be.eql(INCLUDED_VALUE));
+    });
+
+    afterEach(async () => {
+      await app.close();
+    });
   });
 
-  it(`forRoutes((.*))`, () => {
-    return app
-      .inject({
-        method: 'GET',
-        url: '/hello',
-      })
-      .then(({ payload }) => expect(payload).to.be.eql(RETURN_VALUE));
-  });
+  describe.only('should execute middleware only once for given routes', () => {
+    class Middleware implements NestMiddleware {
+      use(request: any, reply: any, next: () => void) {
+        if (request.middlewareExecutionCount === undefined) {
+          request.middlewareExecutionCount = 1;
+        } else {
+          request.middlewareExecutionCount++;
+        }
+        next();
+      }
+    }
 
-  it(`forRoutes(TestController)`, () => {
-    return app
-      .inject({
-        method: 'GET',
-        url: '/test',
-      })
-      .then(({ payload }) => expect(payload).to.be.eql(SCOPED_VALUE));
-  });
+    @Controller()
+    class AbcController {
+      @Get('/a')
+      async a(@Req() request: any) {
+        return this.validateExecutionCount({
+          request,
+          expected: 1,
+        });
+      }
 
-  it(`query?test=${QUERY_VALUE} forRoutes(query)`, () => {
-    return app
-      .inject({
-        method: 'GET',
-        url: '/query',
-        query: {
-          test: QUERY_VALUE,
-        },
-      })
-      .then(({ payload }) => expect(payload).to.be.eql(QUERY_VALUE));
-  });
+      @Get('/a/b')
+      async ab(@Req() request: any) {
+        return this.validateExecutionCount({
+          request,
+          expected: 1,
+        });
+      }
 
-  it(`${QUERY_VALUE}?test=${QUERY_VALUE} forRoutes(${QUERY_VALUE})`, () => {
-    return app
-      .inject({
-        method: 'GET',
-        url: QUERY_VALUE,
-        query: {
-          test: QUERY_VALUE,
-        },
-      })
-      .then(({ payload }) => expect(payload).to.be.eql(QUERY_VALUE));
-  });
+      @Get('/a/b/c')
+      async abc(@Req() request: any) {
+        return this.validateExecutionCount({
+          request,
+          expected: 1,
+        });
+      }
 
-  it(`forRoutes(tests/(.*))`, () => {
-    return app
-      .inject({
-        method: 'GET',
-        url: '/tests/wildcard_nested',
-      })
-      .then(({ payload }) => expect(payload).to.be.eql(WILDCARD_VALUE));
-  });
+      @Get('/similar')
+      async withSimilar(@Req() request: any) {
+        return this.validateExecutionCount({
+          request,
+          expected: 1,
+        });
+      }
 
-  it(`forRoutes(express_style_wildcard/*)`, () => {
-    return app
-      .inject({
-        method: 'GET',
-        url: '/express_style_wildcard/wildcard_nested',
-      })
-      .then(({ payload }) => expect(payload).to.be.eql(WILDCARD_VALUE));
-  });
+      @Get('/similar/test')
+      async withSimilarTest(@Req() request: any) {
+        return this.validateExecutionCount({
+          request,
+          expected: 1,
+        });
+      }
 
-  it(`forRoutes(req/url/)`, () => {
-    const reqUrl = '/test';
-    return app
-      .inject({
-        method: 'GET',
-        url: `/req/url${reqUrl}`,
-      })
-      .then(({ payload }) =>
-        expect(payload).to.be.eql(`${REQ_URL_VALUE}${reqUrl}`),
-      );
-  });
+      @Get('/similar/:id')
+      async withSimilarId(@Req() request: any) {
+        return this.validateExecutionCount({
+          request,
+          expected: 1,
+        });
+      }
 
-  it(`GET forRoutes(POST tests/included)`, () => {
-    return app
-      .inject({
-        method: 'GET',
-        url: '/tests/included',
-      })
-      .then(({ payload }) => expect(payload).to.be.eql(WILDCARD_VALUE));
-  });
+      private validateExecutionCount({
+        request,
+        expected,
+      }: {
+        request: any;
+        expected: number;
+      }) {
+        let actual: number | undefined;
+        actual = request.raw.middlewareExecutionCount;
+        actual ??= 0;
 
-  it(`POST forRoutes(POST tests/included)`, () => {
-    return app
-      .inject({
-        method: 'POST',
-        url: '/tests/included',
-      })
-      .then(({ payload }) => expect(payload).to.be.eql(INCLUDED_VALUE));
-  });
+        return {
+          success: actual === expected,
+          actual,
+          expected,
+        };
+      }
+    }
 
-  afterEach(async () => {
-    await app.close();
+    @Module({
+      controllers: [AbcController],
+    })
+    class TestModule implements NestModule {
+      configure(consumer: MiddlewareConsumer) {
+        consumer.apply(Middleware).forRoutes(AbcController);
+      }
+    }
+
+    beforeEach(async () => {
+      app = (
+        await Test.createTestingModule({
+          imports: [TestModule],
+        }).compile()
+      ).createNestApplication<NestFastifyApplication>(new FastifyAdapter());
+
+      await app.init();
+    });
+
+    it(`GET forRoutes(/a/b/c)`, () => {
+      return app
+        .inject({
+          method: 'GET',
+          url: '/a/b/c',
+        })
+        .then(({ payload }) => {
+          expect(payload).to.be.eql(
+            JSON.stringify({
+              success: true,
+              actual: 1,
+              expected: 1,
+            }),
+          );
+        });
+    });
+
+    it(`GET forRoutes(/a/b)`, () => {
+      return app
+        .inject({
+          method: 'GET',
+          url: '/a/b',
+        })
+        .then(({ payload }) =>
+          expect(payload).to.be.eql(
+            JSON.stringify({
+              success: true,
+              actual: 1,
+              expected: 1,
+            }),
+          ),
+        );
+    });
+
+    it(`GET forRoutes(/a)`, () => {
+      return app
+        .inject({
+          method: 'GET',
+          url: '/a',
+        })
+        .then(({ payload }) =>
+          expect(payload).to.be.eql(
+            JSON.stringify({
+              success: true,
+              actual: 1,
+              expected: 1,
+            }),
+          ),
+        );
+    });
+
+    it(`GET forRoutes(/similar)`, () => {
+      return app
+        .inject({
+          method: 'GET',
+          url: '/similar',
+        })
+        .then(({ payload }) =>
+          expect(payload).to.be.eql(
+            JSON.stringify({
+              success: true,
+              actual: 1,
+              expected: 1,
+            }),
+          ),
+        );
+    });
+
+    it(`GET forRoutes(/similar/test)`, () => {
+      return app
+        .inject({
+          method: 'GET',
+          url: '/similar/test',
+        })
+        .then(({ payload }) =>
+          expect(payload).to.be.eql(
+            JSON.stringify({
+              success: true,
+              actual: 1,
+              expected: 1,
+            }),
+          ),
+        );
+    });
+
+    it(`GET forRoutes(/similar/arbitrary)`, () => {
+      return app
+        .inject({
+          method: 'GET',
+          url: '/similar/arbitrary',
+        })
+        .then(({ payload }) =>
+          expect(payload).to.be.eql(
+            JSON.stringify({
+              success: true,
+              actual: 1,
+              expected: 1,
+            }),
+          ),
+        );
+    });
+
+    afterEach(async () => {
+      await app.close();
+    });
   });
 });

integration/hello-world/e2e/middleware-run-match-route.ts

@@ -0,0 +1,103 @@
+import {
+  Controller,
+  Get,
+  INestApplication,
+  Injectable,
+  MiddlewareConsumer,
+  NestMiddleware,
+  Module,
+} from '@nestjs/common';
+import { Test } from '../../../packages/testing';
+import * as request from 'supertest';
+import { expect } from 'chai';
+
+/**
+ * Number of times that the middleware was executed.
+ */
+let triggerCounter = 0;
+@Injectable()
+class Middleware implements NestMiddleware {
+  use(req, res, next) {
+    triggerCounter++;
+    next();
+  }
+}
+
+@Controller()
+class TestController {
+  @Get('/test')
+  testA() {}
+
+  @Get('/:id')
+  testB() {}
+
+  @Get('/static/route')
+  testC() {}
+
+  @Get('/:id/:nested')
+  testD() {}
+}
+
+@Module({
+  controllers: [TestController],
+})
+class TestModule {
+  configure(consumer: MiddlewareConsumer) {
+    consumer.apply(Middleware).forRoutes(TestController);
+  }
+}
+
+describe('Middleware (run on route match)', () => {
+  let app: INestApplication;
+
+  beforeEach(async () => {
+    triggerCounter = 0;
+    app = (
+      await Test.createTestingModule({
+        imports: [TestModule],
+      }).compile()
+    ).createNestApplication();
+
+    await app.init();
+  });
+
+  it(`forRoutes(TestController) should execute middleware once when request url is equal match`, () => {
+    return request(app.getHttpServer())
+      .get('/test')
+      .expect(200)
+      .then(() => {
+        expect(triggerCounter).to.be.eq(1);
+      });
+  });
+
+  it(`forRoutes(TestController) should execute middleware once when request url is not equal match`, () => {
+    return request(app.getHttpServer())
+      .get('/1')
+      .expect(200)
+      .then(() => {
+        expect(triggerCounter).to.be.eq(1);
+      });
+  });
+
+  it(`forRoutes(TestController) should execute middleware once when request url is not of nested params`, () => {
+    return request(app.getHttpServer())
+      .get('/static/route')
+      .expect(200)
+      .then(() => {
+        expect(triggerCounter).to.be.eq(1);
+      });
+  });
+
+  it(`forRoutes(TestController) should execute middleware once when request url is of nested params`, () => {
+    return request(app.getHttpServer())
+      .get('/1/abc')
+      .expect(200)
+      .then(() => {
+        expect(triggerCounter).to.be.eq(1);
+      });
+  });
+
+  afterEach(async () => {
+    await app.close();
+  });
+});

integration/hello-world/e2e/middleware-with-versioning.spec.ts

@@ -0,0 +1,171 @@
+import {
+  Controller,
+  Get,
+  INestApplication,
+  MiddlewareConsumer,
+  Module,
+  RequestMethod,
+  Version,
+  VersioningOptions,
+  VersioningType,
+  VERSION_NEUTRAL,
+} from '@nestjs/common';
+import { CustomVersioningOptions } from '@nestjs/common/interfaces';
+import { Test } from '@nestjs/testing';
+import * as request from 'supertest';
+import { AppModule } from '../src/app.module';
+
+const RETURN_VALUE = 'test';
+const VERSIONED_VALUE = 'test_versioned';
+
+@Controller()
+class TestController {
+  @Version('1')
+  @Get('versioned')
+  versionedTest() {
+    return RETURN_VALUE;
+  }
+}
+
+@Module({
+  imports: [AppModule],
+  controllers: [TestController],
+})
+class TestModule {
+  configure(consumer: MiddlewareConsumer) {
+    consumer
+      .apply((req, res, next) => res.send(VERSIONED_VALUE))
+      .forRoutes({
+        path: '/versioned',
+        version: '1',
+        method: RequestMethod.ALL,
+      });
+  }
+}
+
+describe('Middleware', () => {
+  let app: INestApplication;
+
+  describe('when using default URI versioning', () => {
+    beforeEach(async () => {
+      app = await createAppWithVersioning({
+        type: VersioningType.URI,
+        defaultVersion: VERSION_NEUTRAL,
+      });
+    });
+
+    it(`forRoutes({ path: '/versioned', version: '1', method: RequestMethod.ALL })`, () => {
+      return request(app.getHttpServer())
+        .get('/v1/versioned')
+        .expect(200, VERSIONED_VALUE);
+    });
+  });
+
+  describe('when default URI versioning with an alternative prefix', () => {
+    beforeEach(async () => {
+      app = await createAppWithVersioning({
+        type: VersioningType.URI,
+        defaultVersion: VERSION_NEUTRAL,
+        prefix: 'version',
+      });
+    });
+
+    it(`forRoutes({ path: '/versioned', version: '1', method: RequestMethod.ALL })`, () => {
+      return request(app.getHttpServer())
+        .get('/version1/versioned')
+        .expect(200, VERSIONED_VALUE);
+    });
+  });
+
+  describe('when using default URI versioning with the global prefix', () => {
+    beforeEach(async () => {
+      app = await createAppWithVersioning(
+        {
+          type: VersioningType.URI,
+          defaultVersion: VERSION_NEUTRAL,
+        },
+        async (app: INestApplication) => {
+          app.setGlobalPrefix('api');
+        },
+      );
+    });
+
+    it(`forRoutes({ path: '/versioned', version: '1', method: RequestMethod.ALL })`, () => {
+      return request(app.getHttpServer())
+        .get('/api/v1/versioned')
+        .expect(200, VERSIONED_VALUE);
+    });
+  });
+
+  describe('when using HEADER versioning', () => {
+    beforeEach(async () => {
+      app = await createAppWithVersioning({
+        type: VersioningType.HEADER,
+        header: 'version',
+      });
+    });
+
+    it(`forRoutes({ path: '/versioned', version: '1', method: RequestMethod.ALL })`, () => {
+      return request(app.getHttpServer())
+        .get('/versioned')
+        .set('version', '1')
+        .expect(200, VERSIONED_VALUE);
+    });
+  });
+
+  describe('when using MEDIA TYPE versioning', () => {
+    beforeEach(async () => {
+      app = await createAppWithVersioning({
+        type: VersioningType.MEDIA_TYPE,
+        key: 'v',
+        defaultVersion: VERSION_NEUTRAL,
+      });
+    });
+
+    it(`forRoutes({ path: '/versioned', version: '1', method: RequestMethod.ALL })`, () => {
+      return request(app.getHttpServer())
+        .get('/versioned')
+        .expect(200, VERSIONED_VALUE);
+    });
+  });
+
+  describe('when using CUSTOM TYPE versioning', () => {
+    beforeEach(async () => {
+      const extractor: CustomVersioningOptions['extractor'] = () => '1';
+
+      app = await createAppWithVersioning({
+        type: VersioningType.CUSTOM,
+        extractor,
+      });
+    });
+
+    it(`forRoutes({ path: '/versioned', version: '1', method: RequestMethod.ALL })`, () => {
+      return request(app.getHttpServer())
+        .get('/versioned')
+        .expect(200, VERSIONED_VALUE);
+    });
+  });
+
+  afterEach(async () => {
+    await app.close();
+  });
+});
+
+async function createAppWithVersioning(
+  versioningOptions: VersioningOptions,
+  beforeInit?: (app: INestApplication) => Promise<void>,
+): Promise<INestApplication> {
+  const app = (
+    await Test.createTestingModule({
+      imports: [TestModule],
+    }).compile()
+  ).createNestApplication();
+
+  app.enableVersioning(versioningOptions);
+  if (beforeInit) {
+    await beforeInit(app);
+  }
+  await app.init();
+
+  return app;
+}

integration/hello-world/e2e/middleware.spec.ts

@@ -7,11 +7,12 @@ import {
 } from '@nestjs/common';
 import { Test } from '@nestjs/testing';
 import * as request from 'supertest';
-import { ApplicationModule } from '../src/app.module';
+import { AppModule } from '../src/app.module';
 
 const RETURN_VALUE = 'test';
 const SCOPED_VALUE = 'test_scoped';
 const WILDCARD_VALUE = 'test_wildcard';
+const EXCLUDE_VALUE = 'test_exclude';
 
 @Controller()
 class TestController {
@@ -24,10 +25,15 @@ class TestController {
   wildcard_nested() {
     return RETURN_VALUE;
   }
+
+  @Get('exclude')
+  exclude() {
+    return EXCLUDE_VALUE;
+  }
 }
 
 @Module({
-  imports: [ApplicationModule],
+  imports: [AppModule],
   controllers: [TestController],
 })
 class TestModule {
@@ -36,8 +42,10 @@ class TestModule {
       .apply((req, res, next) => res.send(WILDCARD_VALUE))
       .forRoutes('tests/*')
       .apply((req, res, next) => res.send(SCOPED_VALUE))
+      .exclude('exclude')
       .forRoutes(TestController)
       .apply((req, res, next) => res.send(RETURN_VALUE))
+      .exclude('exclude')
       .forRoutes('*');
   }
 }
@@ -45,25 +53,34 @@ class TestModule {
 describe('Middleware', () => {
   let app: INestApplication;
 
-  beforeEach(async () => {
-    app = (
-      await Test.createTestingModule({
-        imports: [TestModule],
-      }).compile()
-    ).createNestApplication();
-
-    await app.init();
+  it(`forRoutes(*)`, async () => {
+    app = await createApp();
+    await request(app.getHttpServer()).get('/hello').expect(200, RETURN_VALUE);
+    await request(app.getHttpServer())
+      .get('/exclude')
+      .expect(200, EXCLUDE_VALUE);
   });
 
-  it(`forRoutes(*)`, () => {
-    return request(app.getHttpServer()).get('/hello').expect(200, RETURN_VALUE);
+  it(`forRoutes(*) with global prefix`, async () => {
+    app = await createApp(app => app.setGlobalPrefix('api'));
+    await request(app.getHttpServer())
+      .get('/api/hello')
+      .expect(200, RETURN_VALUE);
+    await request(app.getHttpServer())
+      .get('/api/exclude')
+      .expect(200, EXCLUDE_VALUE);
   });
 
-  it(`forRoutes(TestController)`, () => {
-    return request(app.getHttpServer()).get('/test').expect(200, SCOPED_VALUE);
+  it(`forRoutes(TestController)`, async () => {
+    app = await createApp();
+    await request(app.getHttpServer()).get('/test').expect(200, SCOPED_VALUE);
+    await request(app.getHttpServer())
+      .get('/exclude')
+      .expect(200, EXCLUDE_VALUE);
   });
 
-  it(`forRoutes(tests/*)`, () => {
+  it(`forRoutes(tests/*)`, async () => {
+    app = await createApp();
     return request(app.getHttpServer())
       .get('/tests/wildcard')
       .expect(200, WILDCARD_VALUE);
@@ -73,3 +90,20 @@ describe('Middleware', () => {
     await app.close();
   });
 });
+
+async function createApp(
+  beforeInit?: (app: INestApplication) => void,
+): Promise<INestApplication> {
+  const app = (
+    await Test.createTestingModule({
+      imports: [TestModule],
+    }).compile()
+  ).createNestApplication();
+
+  if (beforeInit) {
+    beforeInit(app);
+  }
+  await app.init();
+
+  return app;
+}

integration/hello-world/e2e/router-module-middleware.spec.ts

@@ -8,7 +8,7 @@ import {
 import { RouterModule } from '@nestjs/core';
 import { Test } from '@nestjs/testing';
 import * as request from 'supertest';
-import { ApplicationModule } from '../src/app.module';
+import { AppModule } from '../src/app.module';
 
 const RETURN_VALUE = 'test';
 const SCOPED_VALUE = 'test_scoped';
@@ -27,7 +27,7 @@ class TestController {
 }
 
 @Module({
-  imports: [ApplicationModule],
+  imports: [AppModule],
   controllers: [TestController],
 })
 class TestModule {

integration/hello-world/src/app.module.ts

@@ -6,4 +6,4 @@ import { HostModule } from './host/host.module';
 @Module({
   imports: [HelloModule, HostModule, HostArrayModule],
 })
-export class ApplicationModule {}
+export class AppModule {}

integration/hello-world/src/errors/errors.controller.ts

@@ -1,4 +1,4 @@
-import { BadRequestException, Controller, Get } from '@nestjs/common';
+import { BadRequestException, Controller, Get, Header } from '@nestjs/common';
 
 @Controller()
 export class ErrorsController {
@@ -12,6 +12,12 @@ export class ErrorsController {
     this.throwError();
   }
 
+  @Get('unexpected-error')
+  @Header('Content-Type', 'application/pdf')
+  unexpectedError() {
+    throw new Error();
+  }
+
   throwError() {
     throw new BadRequestException({
       statusCode: 400,

integration/hello-world/tsconfig.json

@@ -7,10 +7,28 @@
     "noLib": false,
     "emitDecoratorMetadata": true,
     "experimentalDecorators": true,
-    "target": "es6",
+    "target": "ES2021",
     "sourceMap": true,
     "allowJs": true,
-    "outDir": "./dist"
+    "outDir": "./dist",
+    "paths": {
+      "@nestjs/common": ["../../packages/common"],
+      "@nestjs/common/*": ["../../packages/common/*"],
+      "@nestjs/core": ["../../packages/core"],
+      "@nestjs/core/*": ["../../packages/core/*"],
+      "@nestjs/microservices": ["../../packages/microservices"],
+      "@nestjs/microservices/*": ["../../packages/microservices/*"],
+      "@nestjs/websockets": ["../../packages/websockets"],
+      "@nestjs/websockets/*": ["../../packages/websockets/*"],
+      "@nestjs/testing": ["../../packages/testing"],
+      "@nestjs/testing/*": ["../../packages/testing/*"],
+      "@nestjs/platform-express": ["../../packages/platform-express"],
+      "@nestjs/platform-express/*": ["../../packages/platform-express/*"],
+      "@nestjs/platform-socket.io": ["../../packages/platform-socket.io"],
+      "@nestjs/platform-socket.io/*": ["../../packages/platform-socket.io/*"],
+      "@nestjs/platform-ws": ["../../packages/platform-ws"],
+      "@nestjs/platform-ws/*": ["../../packages/platform-ws/*"]
+    }
   },
   "include": [
     "src/**/*",

integration/hooks/tsconfig.json

@@ -7,10 +7,28 @@
     "noLib": false,
     "emitDecoratorMetadata": true,
     "experimentalDecorators": true,
-    "target": "es6",
+    "target": "ES2021",
     "sourceMap": true,
     "allowJs": true,
-    "outDir": "./dist"
+    "outDir": "./dist",
+    "paths": {
+      "@nestjs/common": ["../../packages/common"],
+      "@nestjs/common/*": ["../../packages/common/*"],
+      "@nestjs/core": ["../../packages/core"],
+      "@nestjs/core/*": ["../../packages/core/*"],
+      "@nestjs/microservices": ["../../packages/microservices"],
+      "@nestjs/microservices/*": ["../../packages/microservices/*"],
+      "@nestjs/websockets": ["../../packages/websockets"],
+      "@nestjs/websockets/*": ["../../packages/websockets/*"],
+      "@nestjs/testing": ["../../packages/testing"],
+      "@nestjs/testing/*": ["../../packages/testing/*"],
+      "@nestjs/platform-express": ["../../packages/platform-express"],
+      "@nestjs/platform-express/*": ["../../packages/platform-express/*"],
+      "@nestjs/platform-socket.io": ["../../packages/platform-socket.io"],
+      "@nestjs/platform-socket.io/*": ["../../packages/platform-socket.io/*"],
+      "@nestjs/platform-ws": ["../../packages/platform-ws"],
+      "@nestjs/platform-ws/*": ["../../packages/platform-ws/*"]
+    }
   },
   "include": [
     "src/**/*",

integration/injector/e2e/multiple-providers.spec.ts

@@ -0,0 +1,47 @@
+import { Test } from '@nestjs/testing';
+import { expect } from 'chai';
+import { MultipleProvidersModule } from '../src/multiple-providers/multiple-providers.module';
+
+describe('Multiple providers under the same token ("each" feature)', () => {
+  describe('get()', () => {
+    it('should return an array of providers', async () => {
+      const builder = Test.createTestingModule({
+        imports: [MultipleProvidersModule],
+      });
+      const testingModule = await builder.compile();
+
+      const multiProviderInstances = testingModule.get<string>(
+        'MULTI_PROVIDER',
+        {
+          each: true,
+        },
+      );
+
+      // @ts-expect-error: make sure "multiProviderInstances" is string[] not string
+      multiProviderInstances.charAt;
+
+      expect(multiProviderInstances).to.be.eql(['A', 'B', 'C']);
+    });
+  });
+  describe('resolve()', () => {
+    it('should return an array of providers', async () => {
+      const builder = Test.createTestingModule({
+        imports: [MultipleProvidersModule],
+      });
+      const testingModule = await builder.compile();
+
+      const multiProviderInstances = await testingModule.resolve<string>(
+        'REQ_SCOPED_MULTI_PROVIDER',
+        undefined,
+        {
+          each: true,
+        },
+      );
+
+      // @ts-expect-error: make sure "multiProviderInstances" is string[] not string
+      multiProviderInstances.charAt;
+
+      expect(multiProviderInstances).to.be.eql(['A', 'B', 'C']);
+    });
+  });
+});

integration/injector/e2e/optional-factory-provider-dep.spec.ts

@@ -1,3 +1,4 @@
+import { Scope } from '@nestjs/common';
 import { UnknownDependenciesException } from '@nestjs/core/errors/exceptions/unknown-dependencies.exception';
 import { Test } from '@nestjs/testing';
 import { expect } from 'chai';
@@ -38,6 +39,42 @@ describe('Optional factory provider deps', () => {
         const factoryProvider = moduleRef.get('FACTORY');
         expect(factoryProvider).to.equal(defaultValue);
       });
+      it('"undefined" should be injected into the factory function (scoped provider)', async () => {
+        const MY_PROVIDER = 'MY_PROVIDER';
+        const FIRST_OPTIONAL_DEPENDENCY = 'FIRST_OPTIONAL_DEPENDENCY';
+        const SECOND_OPTIONAL_DEPENDENCY = 'SECOND_OPTIONAL_DEPENDENCY';
+
+        const module = await Test.createTestingModule({
+          providers: [
+            {
+              provide: SECOND_OPTIONAL_DEPENDENCY,
+              useValue: 'second',
+            },
+            {
+              provide: MY_PROVIDER,
+              scope: Scope.REQUEST,
+              inject: [
+                {
+                  token: FIRST_OPTIONAL_DEPENDENCY,
+                  optional: true,
+                },
+                {
+                  token: SECOND_OPTIONAL_DEPENDENCY,
+                  optional: true,
+                },
+              ],
+              useFactory: (first?: string, second?: string) => {
+                return { first, second };
+              },
+            },
+          ],
+        }).compile();
+
+        expect(await module.resolve(MY_PROVIDER)).to.deep.equal({
+          first: undefined,
+          second: 'second',
+        });
+      });
     });
   });
   describe('otherwise', () => {
@@ -84,6 +121,7 @@ describe('Optional factory provider deps', () => {
           .equal(`Nest can't resolve dependencies of the POSSIBLY_MISSING_DEP (?). Please make sure that the argument MISSING_DEP at index [0] is available in the RootTestModule context.
 
 Potential solutions:
+- Is RootTestModule a valid NestJS module?
 - If MISSING_DEP is a provider, is it part of the current RootTestModule?
 - If MISSING_DEP is exported from a separate @Module, is that module imported within RootTestModule?
   @Module({

integration/injector/src/multiple-providers/a.module.ts

@@ -0,0 +1,16 @@
+import { Module, Scope } from '@nestjs/common';
+
+@Module({
+  providers: [
+    {
+      provide: 'MULTI_PROVIDER',
+      useValue: 'A',
+    },
+    {
+      provide: 'REQ_SCOPED_MULTI_PROVIDER',
+      useFactory: () => 'A',
+      scope: Scope.REQUEST,
+    },
+  ],
+})
+export class AModule {}

integration/injector/src/multiple-providers/b.module.ts

@@ -0,0 +1,16 @@
+import { Module, Scope } from '@nestjs/common';
+
+@Module({
+  providers: [
+    {
+      provide: 'MULTI_PROVIDER',
+      useValue: 'B',
+    },
+    {
+      provide: 'REQ_SCOPED_MULTI_PROVIDER',
+      useFactory: () => 'B',
+      scope: Scope.REQUEST,
+    },
+  ],
+})
+export class BModule {}

integration/injector/src/multiple-providers/c.module.ts

@@ -0,0 +1,16 @@
+import { Module, Scope } from '@nestjs/common';
+
+@Module({
+  providers: [
+    {
+      provide: 'MULTI_PROVIDER',
+      useValue: 'C',
+    },
+    {
+      provide: 'REQ_SCOPED_MULTI_PROVIDER',
+      useFactory: () => 'C',
+      scope: Scope.REQUEST,
+    },
+  ],
+})
+export class CModule {}

integration/injector/src/multiple-providers/multiple-providers.module.ts

@@ -0,0 +1,9 @@
+import { Module } from '@nestjs/common';
+import { AModule } from './a.module';
+import { BModule } from './b.module';
+import { CModule } from './c.module';
+
+@Module({
+  imports: [AModule, BModule, CModule],
+})
+export class MultipleProvidersModule {}

integration/injector/src/self-injection/self-injection-provider.module.ts

@@ -6,7 +6,7 @@ class ServiceInjectingItself {
 }
 
 @Injectable()
-class ServiceInjectingItselfForwared {
+class ServiceInjectingItselfForward {
   constructor(
     @Inject(forwardRef(() => ServiceInjectingItself))
     private readonly coreService: ServiceInjectingItself,
@@ -24,7 +24,7 @@ class ServiceInjectingItselfViaCustomToken {
 export class SelfInjectionProviderModule {}
 
 @Module({
-  providers: [ServiceInjectingItselfForwared],
+  providers: [ServiceInjectingItselfForward],
 })
 export class SelfInjectionForwardProviderModule {}
 

integration/injector/tsconfig.json

@@ -7,10 +7,28 @@
     "noLib": false,
     "emitDecoratorMetadata": true,
     "experimentalDecorators": true,
-    "target": "es6",
+    "target": "ES2021",
     "sourceMap": true,
     "allowJs": true,
-    "outDir": "./dist"
+    "outDir": "./dist",
+    "paths": {
+      "@nestjs/common": ["../../packages/common"],
+      "@nestjs/common/*": ["../../packages/common/*"],
+      "@nestjs/core": ["../../packages/core"],
+      "@nestjs/core/*": ["../../packages/core/*"],
+      "@nestjs/microservices": ["../../packages/microservices"],
+      "@nestjs/microservices/*": ["../../packages/microservices/*"],
+      "@nestjs/websockets": ["../../packages/websockets"],
+      "@nestjs/websockets/*": ["../../packages/websockets/*"],
+      "@nestjs/testing": ["../../packages/testing"],
+      "@nestjs/testing/*": ["../../packages/testing/*"],
+      "@nestjs/platform-express": ["../../packages/platform-express"],
+      "@nestjs/platform-express/*": ["../../packages/platform-express/*"],
+      "@nestjs/platform-socket.io": ["../../packages/platform-socket.io"],
+      "@nestjs/platform-socket.io/*": ["../../packages/platform-socket.io/*"],
+      "@nestjs/platform-ws": ["../../packages/platform-ws"],
+      "@nestjs/platform-ws/*": ["../../packages/platform-ws/*"]
+    }
   },
   "include": [
     "src/**/*",

integration/inspector/e2e/graph-inspector.spec.ts

@@ -0,0 +1,69 @@
+import { ValidationPipe } from '@nestjs/common';
+import { Injector } from '@nestjs/core/injector/injector';
+import { SerializedGraph } from '@nestjs/core/inspector/serialized-graph';
+import { MicroserviceOptions, Transport } from '@nestjs/microservices';
+import { Test, TestingModule } from '@nestjs/testing';
+import { expect } from 'chai';
+import { readFileSync } from 'fs';
+import { join } from 'path';
+import * as sinon from 'sinon';
+import { AppModule } from '../src/app.module';
+import { HttpExceptionFilter } from '../src/common/filters/http-exception.filter';
+import { TimeoutInterceptor } from '../src/common/interceptors/timeout.interceptor';
+
+describe('Graph inspector', () => {
+  let testingModule: TestingModule;
+
+  before(async () => {
+    sinon.stub(Injector.prototype as any, 'getNowTimestamp').callsFake(() => 0);
+
+    testingModule = await Test.createTestingModule({
+      imports: [AppModule],
+    }).compile({ snapshot: true });
+  });
+
+  it('should generate a pre-initialization graph and match snapshot', () => {
+    const graph = testingModule.get(SerializedGraph);
+
+    // Update snapshot:
+    // writeFileSync(
+    //   join(__dirname, 'fixtures', 'pre-init-graph.json'),
+    //   graph.toString(),
+    // );
+
+    const snapshot = readFileSync(
+      join(__dirname, 'fixtures', 'pre-init-graph.json'),
+      'utf-8',
+    );
+
+    expect(JSON.parse(graph.toString())).to.deep.equal(JSON.parse(snapshot));
+  });
+
+  it('should generate a post-initialization graph and match snapshot', async () => {
+    const app = testingModule.createNestApplication({ preview: true });
+    app.useGlobalPipes(new ValidationPipe());
+    app.useGlobalFilters(new HttpExceptionFilter());
+    app.useGlobalInterceptors(new TimeoutInterceptor());
+    app.enableVersioning();
+    app.connectMicroservice<MicroserviceOptions>({
+      transport: Transport.TCP,
+      options: {},
+    });
+    await app.init();
+
+    const graph = testingModule.get(SerializedGraph);
+
+    // Update snapshot:
+    // writeFileSync(
+    //   join(__dirname, 'fixtures', 'post-init-graph.json'),
+    //   graph.toString(),
+    // );
+
+    const snapshot = readFileSync(
+      join(__dirname, 'fixtures', 'post-init-graph.json'),
+      'utf-8',
+    );
+
+    expect(graph.toString()).to.equal(snapshot);
+  });
+});

integration/inspector/src/app-v1.controller.ts

@@ -0,0 +1,16 @@
+import { Controller, Get } from '@nestjs/common';
+
+@Controller({
+  version: '1',
+})
+export class AppV1Controller {
+  @Get('/')
+  helloWorldV1() {
+    return 'Hello World V1!';
+  }
+
+  @Get('/:param/hello')
+  paramV1() {
+    return 'Parameter V1!';
+  }
+}

integration/inspector/src/app-v2.controller.ts

@@ -0,0 +1,17 @@
+import { Controller, Get, Version } from '@nestjs/common';
+
+@Controller({
+  version: '2',
+})
+export class AppV2Controller {
+  @Get('/')
+  helloWorldV2() {
+    return 'Hello World V2!';
+  }
+
+  @Version('3')
+  @Get('/:param/hello')
+  paramV1() {
+    return 'Parameter V2!';
+  }
+}

integration/inspector/src/app.module.ts

@@ -0,0 +1,46 @@
+import { Module, Scope } from '@nestjs/common';
+import { AppV1Controller } from './app-v1.controller';
+import { AppV2Controller } from './app-v2.controller';
+import { CatsModule } from './cats/cats.module';
+import { ChatModule } from './chat/chat.module';
+import { HelloModule as CircularHelloModule } from './circular-hello/hello.module';
+import { HelloService } from './circular-hello/hello.service';
+import { InputModule } from './circular-modules/input.module';
+import { CoreModule } from './core/core.module';
+import { DatabaseModule } from './database/database.module';
+import { DogsModule } from './dogs/dogs.module';
+import { DurableModule } from './durable/durable.module';
+import { ExternalSvcModule } from './external-svc/external-svc.module';
+import { PropertiesModule } from './properties/properties.module';
+import { RequestChainModule } from './request-chain/request-chain.module';
+import { UsersModule } from './users/users.module';
+
+class Meta {
+  static COUNTER = 0;
+  constructor(private readonly helloService: HelloService) {
+    Meta.COUNTER++;
+  }
+}
+
+@Module({
+  imports: [
+    CoreModule,
+    CatsModule,
+    CircularHelloModule.forRoot({
+      provide: 'META',
+      useClass: Meta,
+      scope: Scope.REQUEST,
+    }),
+    DurableModule,
+    DogsModule,
+    UsersModule,
+    DatabaseModule,
+    ExternalSvcModule,
+    ChatModule,
+    RequestChainModule,
+    PropertiesModule,
+    InputModule,
+  ],
+  controllers: [AppV1Controller, AppV2Controller],
+})
+export class AppModule {}

integration/inspector/src/cats/cats.controller.ts

@@ -0,0 +1,30 @@
+import { Body, Controller, Get, Param, Post, UseGuards } from '@nestjs/common';
+import { RolesGuard } from '../common/guards/roles.guard';
+import { ParseIntPipe } from '../common/pipes/parse-int.pipe';
+import { CatsService } from './cats.service';
+import { CreateCatDto } from './dto/create-cat.dto';
+import { Cat } from './interfaces/cat.interface';
+
+@UseGuards(RolesGuard)
+@Controller('cats')
+export class CatsController {
+  constructor(private readonly catsService: CatsService) {}
+
+  @Post()
+  async create(@Body() createCatDto: CreateCatDto) {
+    this.catsService.create(createCatDto);
+  }
+
+  @Get()
+  async findAll(): Promise<Cat[]> {
+    return this.catsService.findAll();
+  }
+
+  @Get(':id')
+  findOne(
+    @Param('id', new ParseIntPipe())
+    id: number,
+  ) {
+    // get by ID logic
+  }
+}

integration/inspector/src/cats/cats.module.ts

@@ -0,0 +1,9 @@
+import { Module } from '@nestjs/common';
+import { CatsController } from './cats.controller';
+import { CatsService } from './cats.service';
+
+@Module({
+  controllers: [CatsController],
+  providers: [CatsService],
+})
+export class CatsModule {}

integration/inspector/src/cats/cats.service.ts

@@ -0,0 +1,15 @@
+import { Injectable } from '@nestjs/common';
+import { Cat } from './interfaces/cat.interface';
+
+@Injectable()
+export class CatsService {
+  private readonly cats: Cat[] = [];
+
+  create(cat: Cat) {
+    this.cats.push(cat);
+  }
+
+  findAll(): Cat[] {
+    return this.cats;
+  }
+}

integration/inspector/src/cats/dto/create-cat.dto.ts

@@ -0,0 +1,12 @@
+import { IsInt, IsString } from 'class-validator';
+
+export class CreateCatDto {
+  @IsString()
+  readonly name: string;
+
+  @IsInt()
+  readonly age: number;
+
+  @IsString()
+  readonly breed: string;
+}

integration/inspector/src/cats/interfaces/cat.interface.ts

@@ -0,0 +1,5 @@
+export interface Cat {
+  name: string;
+  age: number;
+  breed: string;
+}

integration/inspector/src/chat/chat.gateway.ts

@@ -0,0 +1,38 @@
+import {
+  WebSocketGateway,
+  SubscribeMessage,
+  MessageBody,
+} from '@nestjs/websockets';
+import { ChatService } from './chat.service';
+import { CreateChatDto } from './dto/create-chat.dto';
+import { UpdateChatDto } from './dto/update-chat.dto';
+
+@WebSocketGateway()
+export class ChatGateway {
+  constructor(private readonly chatService: ChatService) {}
+
+  @SubscribeMessage('createChat')
+  create(@MessageBody() createChatDto: CreateChatDto) {
+    return this.chatService.create(createChatDto);
+  }
+
+  @SubscribeMessage('findAllChat')
+  findAll() {
+    return this.chatService.findAll();
+  }
+
+  @SubscribeMessage('findOneChat')
+  findOne(@MessageBody() id: number) {
+    return this.chatService.findOne(id);
+  }
+
+  @SubscribeMessage('updateChat')
+  update(@MessageBody() updateChatDto: UpdateChatDto) {
+    return this.chatService.update(updateChatDto.id, updateChatDto);
+  }
+
+  @SubscribeMessage('removeChat')
+  remove(@MessageBody() id: number) {
+    return this.chatService.remove(id);
+  }
+}

integration/inspector/src/chat/chat.module.ts

@@ -0,0 +1,8 @@
+import { Module } from '@nestjs/common';
+import { ChatService } from './chat.service';
+import { ChatGateway } from './chat.gateway';
+
+@Module({
+  providers: [ChatGateway, ChatService],
+})
+export class ChatModule {}

integration/inspector/src/chat/chat.service.ts

@@ -0,0 +1,26 @@
+import { Injectable } from '@nestjs/common';
+import { CreateChatDto } from './dto/create-chat.dto';
+import { UpdateChatDto } from './dto/update-chat.dto';
+
+@Injectable()
+export class ChatService {
+  create(createChatDto: CreateChatDto) {
+    return 'This action adds a new chat';
+  }
+
+  findAll() {
+    return `This action returns all chat`;
+  }
+
+  findOne(id: number) {
+    return `This action returns a #${id} chat`;
+  }
+
+  update(id: number, updateChatDto: UpdateChatDto) {
+    return `This action updates a #${id} chat`;
+  }
+
+  remove(id: number) {
+    return `This action removes a #${id} chat`;
+  }
+}

integration/inspector/src/chat/dto/create-chat.dto.ts

@@ -0,0 +1 @@
+export class CreateChatDto {}

integration/inspector/src/chat/dto/update-chat.dto.ts

@@ -0,0 +1,6 @@
+import { PartialType } from '@nestjs/mapped-types';
+import { CreateChatDto } from './create-chat.dto';
+
+export class UpdateChatDto extends PartialType(CreateChatDto) {
+  id: number;
+}

integration/inspector/src/chat/entities/chat.entity.ts

@@ -0,0 +1 @@
+export class Chat {}

integration/inspector/src/circular-hello/dto/test.dto.ts

@@ -0,0 +1,10 @@
+import { IsString, IsNotEmpty, IsNumber } from 'class-validator';
+
+export class TestDto {
+  @IsString()
+  @IsNotEmpty()
+  string: string;
+
+  @IsNumber()
+  number: number;
+}

integration/inspector/src/circular-hello/guards/request-scoped.guard.ts

@@ -0,0 +1,21 @@
+import {
+  CanActivate,
+  ExecutionContext,
+  Injectable,
+  Scope,
+} from '@nestjs/common';
+import { Observable } from 'rxjs';
+
+@Injectable({ scope: Scope.REQUEST })
+export class Guard implements CanActivate {
+  static COUNTER = 0;
+  constructor() {
+    Guard.COUNTER++;
+  }
+
+  canActivate(
+    context: ExecutionContext,
+  ): boolean | Promise<boolean> | Observable<boolean> {
+    return true;
+  }
+}

integration/inspector/src/circular-hello/hello.controller.ts

@@ -0,0 +1,30 @@
+import {
+  Controller,
+  Get,
+  Param,
+  UseGuards,
+  UseInterceptors,
+} from '@nestjs/common';
+import { Guard } from './guards/request-scoped.guard';
+import { HelloService } from './hello.service';
+import { Interceptor } from './interceptors/logging.interceptor';
+import { UserByIdPipe } from './users/user-by-id.pipe';
+import { UsersService } from './users/users.service';
+
+@Controller('hello')
+export class HelloController {
+  static COUNTER = 0;
+  constructor(
+    private readonly helloService: HelloService,
+    private readonly usersService: UsersService,
+  ) {
+    HelloController.COUNTER++;
+  }
+
+  @UseGuards(Guard)
+  @UseInterceptors(Interceptor)
+  @Get()
+  greeting(@Param('id', UserByIdPipe) id): string {
+    return this.helloService.greeting();
+  }
+}

integration/inspector/src/circular-hello/hello.module.ts

@@ -0,0 +1,19 @@
+import { DynamicModule, Inject, Module, Provider } from '@nestjs/common';
+import { HelloController } from './hello.controller';
+import { HelloService } from './hello.service';
+import { UsersService } from './users/users.service';
+
+@Module({
+  controllers: [HelloController],
+  providers: [HelloService, UsersService],
+})
+export class HelloModule {
+  constructor(@Inject('META') private readonly meta) {}
+
+  static forRoot(meta: Provider): DynamicModule {
+    return {
+      module: HelloModule,
+      providers: [meta],
+    };
+  }
+}

integration/inspector/src/circular-hello/hello.service.ts

@@ -0,0 +1,13 @@
+import { Inject, Injectable, Scope } from '@nestjs/common';
+
+@Injectable({ scope: Scope.REQUEST })
+export class HelloService {
+  static COUNTER = 0;
+  constructor(@Inject('META') private readonly meta) {
+    HelloService.COUNTER++;
+  }
+
+  greeting(): string {
+    return 'Hello world!';
+  }
+}

integration/inspector/src/circular-hello/interceptors/logging.interceptor.ts

@@ -0,0 +1,19 @@
+import {
+  CallHandler,
+  ExecutionContext,
+  Injectable,
+  NestInterceptor,
+  Scope,
+} from '@nestjs/common';
+import { Observable } from 'rxjs';
+
+@Injectable({ scope: Scope.REQUEST })
+export class Interceptor implements NestInterceptor {
+  static COUNTER = 0;
+  constructor() {
+    Interceptor.COUNTER++;
+  }
+  intercept(context: ExecutionContext, call: CallHandler): Observable<any> {
+    return call.handle();
+  }
+}

integration/inspector/src/circular-hello/users/user-by-id.pipe.ts

@@ -0,0 +1,14 @@
+import { ArgumentMetadata, Injectable, PipeTransform } from '@nestjs/common';
+import { UsersService } from './users.service';
+
+@Injectable()
+export class UserByIdPipe implements PipeTransform<string> {
+  static COUNTER = 0;
+  constructor(private readonly usersService: UsersService) {
+    UserByIdPipe.COUNTER++;
+  }
+
+  transform(value: string, metadata: ArgumentMetadata) {
+    return this.usersService.findById(value);
+  }
+}

integration/inspector/src/circular-hello/users/users.service.ts

@@ -0,0 +1,13 @@
+import { Inject, Injectable, Scope } from '@nestjs/common';
+
+@Injectable({ scope: Scope.REQUEST })
+export class UsersService {
+  static COUNTER = 0;
+  constructor(@Inject('META') private readonly meta) {
+    UsersService.COUNTER++;
+  }
+
+  findById(id: string) {
+    return { id };
+  }
+}

integration/inspector/src/circular-modules/circular.module.ts

@@ -0,0 +1,10 @@
+import { Module, forwardRef } from '@nestjs/common';
+import { CircularService } from './circular.service';
+import { InputModule } from './input.module';
+
+@Module({
+  imports: [forwardRef(() => InputModule)],
+  providers: [CircularService],
+  exports: [CircularService],
+})
+export class CircularModule {}

integration/inspector/src/circular-modules/circular.service.ts

@@ -0,0 +1,10 @@
+import { Injectable, forwardRef, Inject } from '@nestjs/common';
+import { InputService } from './input.service';
+
+@Injectable()
+export class CircularService {
+  constructor(
+    @Inject(forwardRef(() => InputService))
+    public readonly service: InputService,
+  ) {}
+}

integration/inspector/src/circular-modules/input.module.ts

@@ -0,0 +1,10 @@
+import { Module, forwardRef } from '@nestjs/common';
+import { CircularModule } from './circular.module';
+import { InputService } from './input.service';
+
+@Module({
+  imports: [forwardRef(() => CircularModule)],
+  providers: [InputService],
+  exports: [InputService],
+})
+export class InputModule {}

integration/inspector/src/circular-modules/input.service.ts

@@ -0,0 +1,10 @@
+import { Injectable, Inject, forwardRef } from '@nestjs/common';
+import { CircularService } from './circular.service';
+
+@Injectable()
+export class InputService {
+  constructor(
+    @Inject(forwardRef(() => CircularService))
+    public readonly service: CircularService,
+  ) {}
+}

integration/inspector/src/common/filters/http-exception.filter.ts

@@ -0,0 +1,22 @@
+import {
+  ArgumentsHost,
+  Catch,
+  ExceptionFilter,
+  HttpException,
+} from '@nestjs/common';
+
+@Catch(HttpException)
+export class HttpExceptionFilter implements ExceptionFilter<HttpException> {
+  catch(exception: HttpException, host: ArgumentsHost) {
+    const ctx = host.switchToHttp();
+    const response = ctx.getResponse();
+    const request = ctx.getRequest();
+    const statusCode = exception.getStatus();
+
+    response.status(statusCode).json({
+      statusCode,
+      timestamp: new Date().toISOString(),
+      path: request.url,
+    });
+  }
+}

integration/inspector/src/common/guards/roles.guard.ts

@@ -0,0 +1,20 @@
+import { CanActivate, ExecutionContext, Injectable } from '@nestjs/common';
+import { Reflector } from '@nestjs/core';
+
+@Injectable()
+export class RolesGuard implements CanActivate {
+  constructor(private readonly reflector: Reflector) {}
+
+  canActivate(context: ExecutionContext): boolean {
+    const roles = this.reflector.get<string[]>('roles', context.getHandler());
+    if (!roles) {
+      return true;
+    }
+    const request = context.switchToHttp().getRequest();
+    const user = request.user;
+    const hasRole = () =>
+      user.roles.some(role => !!roles.find(item => item === role));
+
+    return user && user.roles && hasRole();
+  }
+}

integration/inspector/src/common/interceptors/timeout.interceptor.ts

@@ -0,0 +1,15 @@
+import {
+  CallHandler,
+  ExecutionContext,
+  Injectable,
+  NestInterceptor,
+} from '@nestjs/common';
+import { Observable } from 'rxjs';
+import { timeout } from 'rxjs/operators';
+
+@Injectable()
+export class TimeoutInterceptor implements NestInterceptor {
+  intercept(context: ExecutionContext, next: CallHandler): Observable<any> {
+    return next.handle().pipe(timeout(5000));
+  }
+}

integration/inspector/src/common/middleware/logger.middleware.ts

@@ -0,0 +1,9 @@
+import { Injectable, NestMiddleware } from '@nestjs/common';
+
+@Injectable()
+export class LoggerMiddleware implements NestMiddleware {
+  use(req: any, res: any, next: () => void) {
+    console.log(`Request...`);
+    next();
+  }
+}

integration/inspector/src/common/pipes/parse-int.pipe.ts

@@ -0,0 +1,17 @@
+import {
+  BadRequestException,
+  PipeTransform,
+  Injectable,
+  ArgumentMetadata,
+} from '@nestjs/common';
+
+@Injectable()
+export class ParseIntPipe implements PipeTransform<string> {
+  async transform(value: string, metadata: ArgumentMetadata) {
+    const val = parseInt(value, 10);
+    if (isNaN(val)) {
+      throw new BadRequestException('Validation failed');
+    }
+    return val;
+  }
+}