libs/shared/src/upload/ held a network adapter, an Elm machine, and two application-layer coordinators outside the folder-per-layer convention every other context follows. The dependency-cruiser rule carved an exception around the misplaced adapter instead of the violation being fixed. Move all five files to the layer each belongs to (git mv), update every import across 24 consumer files, then delete the carve-out clause from .dependency-cruiser.base.js. No export renamed, no file split, no spec content changed. Deleting the carve-out exposed a second, pre-existing rule violation: ui-not-infrastructure had never fired against upload.adapter.ts because its old path did not match /infrastructure/. Three UI components injected UploadAdapter directly for its one-line contentUrl() wrapper. Route each through the existing pure uploadContentUrl() function via the application layer (upload-controller's new previewUrlFor, OrgTemplateStore's new previewUrlFor) instead — the same idiom brief.store.ts already used. npm run ci passes; dep:check is clean for both apps with the carve-out gone. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
76 lines
4.1 KiB
Markdown
76 lines
4.1 KiB
Markdown
# Dependencies & boundaries
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How the app's **bounded-context** and **atomic-layer** boundaries are declared, enforced, and
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visualized (WP-38, generalized for the two-app monorepo by WP-67). One declarative source —
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`.dependency-cruiser.base.js` (a rule _factory_) plus one thin `.dependency-cruiser.<app>.js` per
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app — both **guards** the edges and **draws** the graph, replacing the per-context
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`no-restricted-imports` blocks that previously had to be hand-copied (and that had left
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`herregistratie` uncovered). Each app is cruised **separately**, against its own `tsconfig.json`:
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a single merged tsconfig can't resolve both apps' `@auth/*` alias at once (each points at a
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different physical directory), so there is no single global config file.
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## The rules (single source: `.dependency-cruiser.base.js`)
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**Bounded-context direction** — dependencies point inward; every app context may use
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`libs/shared` and `libs/beheer`, nothing imports `showcase`:
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| Context (apps/ssp) | May import |
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| ------------------ | --------------------------------------------------- |
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| `auth` | `libs/shared`, `libs/beheer` |
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| `registratie` | `libs/shared`, `libs/beheer` |
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| `herregistratie` | `registratie`, `libs/shared`, `libs/beheer` |
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| `brief` | `libs/shared`, `libs/beheer` |
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| `showcase` | everything in `apps/ssp` (sanctioned teaching page) |
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| Context (apps/behandelportal) | May import |
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| ----------------------------- | ---------------------------- |
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| `auth` | `libs/shared`, `libs/beheer` |
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| `behandeling` | `libs/shared`, `libs/beheer` |
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`libs/shared` is the base (no feature context, no `libs/beheer` — that direction is forbidden too,
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so shared never grows a dependency on a peer library). `libs/beheer` is a real bounded context
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(admin/stamdata), used identically by both apps — it may depend on `libs/shared`, never the
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reverse. An app may not import the other app's source directly.
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**Atomic-layer rules:** `domain/` is framework-free (no Angular); `contracts/` import nothing
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(pure wire DTOs, ADR-0001); `ui/` + `layout/` never import `infrastructure/` directly (reach data
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through an application store/command — type-only DTO imports are fine); the generated `ApiClient`
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is a value only inside `infrastructure/`. Plus **no circular**
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dependencies. These apply uniformly across an app's tree and both libraries — no debug-state
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exception anymore (WP-67 moved the dev panel component out of `libs/shared` into `apps/ssp` since
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it's genuinely SSP-specific, coupled to `BigProfileStore`; the shared `ShellComponent` hosts
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whichever app-provided component the `DEBUG_PANEL` injection token supplies, or none).
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## See the graph
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```bash
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npm run dep:graph # regenerates docs/reference/architecture/dependency-graph.md (mermaid) — one diagram per app
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```
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[dependency-graph.md](./dependency-graph.md) is the generated, committed view — contexts × atomic
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layers, edges are real imports. It renders on the git host; regenerate + commit after a structural
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change.
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## Enforce
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```bash
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npm run dep:check # runs both apps' configs; fails on any forbidden edge; part of `npm run ci` and CI
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```
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A violation prints the offending `from → to` and the rule name. `dep:check` runs in the local gate
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(`scripts/ci-local.sh`) and the `frontend` CI job.
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## What still lives in ESLint
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Only the non-dependency rules: `@typescript-eslint/no-explicit-any` and the angular-eslint template
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accessibility bundle (see `eslint.config.mjs`, scoped to `{apps,libs}/**`). Everything about _who
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may import whom_ is in dependency-cruiser.
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## Adding a context
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Add one context entry to the relevant app's object literal in `.dependency-cruiser.ssp.js` (or
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`.dependency-cruiser.behandelportal.js`) — passed straight into the shared `buildConfig` factory in
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`.dependency-cruiser.base.js` (and the tsconfig path alias + lazy route) — no more hand-copying
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ESLint blocks. The `new-context` skill / `gen:context` (`plopfile.mjs`, ssp-only today) covers the
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full checklist.
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