NestJSをお試しで使ってみようと思いインストール。
NestJSについてはこちらから

NestJS/CLIをインストール

% npm i -g @nestjs/cli
npm WARN EBADENGINE Unsupported engine {
npm WARN EBADENGINE   package: '@angular-devkit/core@12.2.10',
npm WARN EBADENGINE   required: {
npm WARN EBADENGINE     node: '^12.14.1 || >=14.0.0',
npm WARN EBADENGINE     npm: '^6.11.0 || ^7.5.6',
npm WARN EBADENGINE     yarn: '>= 1.13.0'
npm WARN EBADENGINE   },
npm WARN EBADENGINE   current: { node: 'v16.13.0', npm: '8.1.0' }
npm WARN EBADENGINE }
npm WARN EBADENGINE Unsupported engine {
npm WARN EBADENGINE   package: '@angular-devkit/schematics@12.2.10',
npm WARN EBADENGINE   required: {
npm WARN EBADENGINE     node: '^12.14.1 || >=14.0.0',
npm WARN EBADENGINE     npm: '^6.11.0 || ^7.5.6',
npm WARN EBADENGINE     yarn: '>= 1.13.0'
npm WARN EBADENGINE   },
npm WARN EBADENGINE   current: { node: 'v16.13.0', npm: '8.1.0' }
npm WARN EBADENGINE }
npm WARN EBADENGINE Unsupported engine {
npm WARN EBADENGINE   package: '@angular-devkit/schematics-cli@12.2.10',
npm WARN EBADENGINE   required: {
npm WARN EBADENGINE     node: '^12.14.1 || >=14.0.0',
npm WARN EBADENGINE     npm: '^6.11.0 || ^7.5.6',
npm WARN EBADENGINE     yarn: '>= 1.13.0'
npm WARN EBADENGINE   },
npm WARN EBADENGINE   current: { node: 'v16.13.0', npm: '8.1.0' }
npm WARN EBADENGINE }

added 251 packages, and audited 252 packages in 29s

36 packages are looking for funding
  run `npm fund` for details

found 0 vulnerabilities
npm notice 
npm notice New patch version of npm available! 8.1.0 -> 8.1.3
npm notice Changelog: https://github.com/npm/cli/releases/tag/v8.1.3
npm notice Run npm install -g npm@8.1.3 to update!
npm notice

バージョン確認

% nest --version
8.1.4

もしくは

% nest info

 _   _             _      ___  _____  _____  _     _____
| \ | |           | |    |_  |/  ___|/  __ \| |   |_   _|
|  \| |  ___  ___ | |_     | |\ `--. | /  \/| |     | |
| . ` | / _ \/ __|| __|    | | `--. \| |    | |     | |
| |\  ||  __/\__ \| |_ /\__/ //\__/ /| \__/\| |_____| |_
\_| \_/ \___||___/ \__|\____/ \____/  \____/\_____/\___/


[System Information]
OS Version     : macOS Big Sur
NodeJS Version : v16.13.0
NPM Version    : 8.1.0 

[Nest CLI]
Nest CLI Version : 8.1.4 

[Nest Platform Information]
😼  cannot read your project package.json file, are you inside your project directory?

以上、NestJSのインストール完了。