A file's layer was the first path segment under src/, so src/types.ts,
the shared types module every layer imports as '../types', got the
layer "types.ts" and no rule at all, while the imports into it already
resolved to "types". It could import a component or a page unnoticed.
A file directly in src/ is now the layer of its name without the
extension, for the importer and the import alike. No file changes its
count: types.ts imports only @trek/shared today.
The checker scripts were written without semicolons, against the
semi: true in .prettierrc, so every one of them failed the formatting
rule lint:format enforces on src/ and tests/. This is prettier --write
over the scripts this branch added or rewrote, nothing else.
Components reach up into pages/ for models and helpers (28 imports in
25 files: the journey detail helpers, the collections, atlas and
dashboard models) and sideways into mobile/ for phone hooks and sheets
(36 in 30 files), and a few stores and a repo import from components/.
Nothing stopped the next one, and every such import ties two trees
together that should move and split independently.
lint:layers reads each source file's imports from its syntax tree
(multi-line imports, re-exports, import() and type imports included,
nothing inside comments or strings) and checks them against a small
rule table: a component imports neither pages/ nor mobile/, a shared
hook no view, nothing under the views (store, repo, sync, api, db,
utils and the other helpers) any view, a repo no store, and the Dexie
schema none of the layers above it. mobile/ and pages/ stay free, since
the phone screens reuse the page hooks by design.
The 80 imports that break a rule today are counted per file in
scripts/layers-baseline.json, and a file may hold no more than its
entry. Type imports count: a type the lower layer needs belongs below
it. Tests are not checked.
Maurice