---
name: new-context
description: Scaffold a new DDD bounded context (folders, path alias, eslint boundary rules, lazy route). Use when adding a new business capability that doesn't belong in an existing context.
---

# New bounded context

A context is a business **capability**, not a user group — a user group is an actor
that may span contexts (ADR-0002). Check first whether the capability belongs in an
existing context; new contexts are rare.

Naming: domain contexts are **Dutch** (`registratie`, `herregistratie`); only
shared/reusable code is English. The context name is the ubiquitous language term.

## Steps

1. **Folders** — `src/app/<ctx>/{domain,application,infrastructure,ui}` (`contracts/`
   only once it gets a wire seam). Empty layers can wait; don't scaffold placeholders.
2. **Path alias** — add `"@<ctx>/*": ["src/app/<ctx>/*"]` to `tsconfig.json` `paths`.
   Aliases are direction statements; always import cross-context via the alias.
3. **eslint boundaries** (`eslint.config.mjs`) — dependencies point inward and
   toward `shared` only. Copy the existing per-context block (the `brief` block is
   the minimal leaf-context example) and:
   - add a block for `src/app/<ctx>/**/*.ts` banning imports from every context it
     may **not** depend on;
   - add `@<ctx>/*` to the ban lists of `shared/**` and every context that must not
     depend on the new one (grep the config for `@brief/*` to find all lists);
   - the generic blocks (`domain/**` framework-free, `contracts/**` import-nothing,
     ApiClient confinement, `ui/**` never imports `infrastructure`) match by glob
     and cover the new context automatically.
4. **Route** — lazy child under the persistent shell in `app.routes.ts`:

   ```ts
   { path: '<ctx>', canActivate: [authGuard],
     loadComponent: () => import('@<ctx>/ui/<ctx>.page').then(m => m.CtxPage) }
   ```

5. Build the first feature slice with the **new-feature** skill.

## Worked example

`src/app/brief/` — an independent leaf context (depends only on shared): see its
folder layout and its eslint block in `eslint.config.mjs`.

## Verify

```bash
npm run lint && npm run build
# prove the fence works: add a forbidden import (e.g. new ctx → @herregistratie/*),
# confirm lint fails, remove it.
```