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# nestJS.ai

A free, open-source, **practical** companion to the official NestJS documentation — 15 deep-dive
chapters, a 34-question interview prep bank, and 3 full from-scratch projects. Pure static HTML/CSS/JS,
no build step, no framework, no `node_modules` required to run it.

**[Live preview →](./index.html)** (open directly in a browser, or serve the folder — see below)

## Why this exists

The official docs are an excellent reference, but a reference isn't a tutorial. This project
reorganizes the same concepts around how you'll actually meet them — while building a feature, or
answering an interview question under pressure — and pairs every idea with runnable code.

## Contents

| Section | What's there |
|---|---|
| `docs/` | 15 chapters: Introduction → CLI → Architecture → Modules → Controllers → DI → Middleware/Guards → Pipes → Interceptors/Filters → Custom Decorators → Config → Database (TypeORM & Prisma) → Auth (Passport/JWT) → Testing → Advanced (GraphQL, WebSockets, Microservices, CQRS, Caching, Queues, Swagger, Security, Deployment) |
| `interview/` | 34 categorized interview questions & answers, with likely follow-ups |
| `projects/` | 3 complete builds: a Task Manager REST API, a real-time WebSocket chat, and a two-service microservices order system |
| `about/` | Repo structure & contributing guide |

## Running it locally

No build step needed — every page is static HTML.

```bash
# option 1: just open it
open index.html

# option 2: serve it (recommended, avoids any local-file quirks)
npx serve .
# or
python3 -m http.server 8000
```

## Regenerating the site

Pages are generated from `content.py` by `generate.py` to keep the header, sidebar, footer, and
search index consistent across every page. You do **not** need Python to edit content — every
output file is plain HTML you can hand-edit directly. The generator is there for larger changes
(new chapters, renumbering, site-wide layout tweaks).

```bash
python3 generate.py
```

## Tech

- **Styling:** hand-written CSS design system (`assets/css/style.css`, `home.css`) — no framework,
  no Tailwind build step. Fonts: Space Grotesk, Inter, JetBrains Mono (Google Fonts).
- **Code highlighting:** highlight.js (CDN)
- **Search:** a small vanilla-JS `⌘K` command palette (`assets/js/main.js`) over a generated
  `assets/js/search-index.js`
- **Generator:** plain Python 3, no dependencies

## Contributing

See [`about/index.html`](./about/index.html) for the full guide. Short version: fork it, edit the
HTML, open a PR. Typos, corrections, a 4th project, and more interview questions are all welcome.

## License

MIT — see [`LICENSE`](./LICENSE).

---

*Not affiliated with NestJS or Kamil Myśliwiec. Cross-checked against
[docs.nestjs.com](https://docs.nestjs.com) and [MDN](https://developer.mozilla.org); when in doubt,
those are the ground truth.*

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nestJS.ai Latest Version Download

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