The app HAS a platform layer -- AnchoredPopover (22 importers, with
arrows/typeahead/Escape/anchor-flip), QueryState (21), Modal (17),
PageShell, DataTable, Tabs, Tooltip and ~26 more -- but it sat flat among
~160 feature components with nothing marking it as one. Several of those
files describe themselves as 'the one place' or 'canonical' and were
still bypassed by hand-rolled markup, because a layer nobody can see is a
layer nobody uses; three separate inventory passes of this codebase
misread it the same way.
Moves the 33 domain-free modules into components/ui/, rewrites the
imports in 89 files, and makes the boundary a lint rule rather than a
convention: inside ui/ a one-level-up import (a feature component) and
any lib/api slice are errors. The rule was verified to fire on both and
to leave generic lib/ helpers alone. README.md states which side of the
line a component belongs on and why.
No behaviour change: 3x tsc, eslint, knip, prettier and 687 vitest tests
all green; no backend file touched.
- eslint no-restricted-syntax: a new text-[Npx] font size is now an error (matches
strings + template chunks; rem arbitraries like text-[0.75rem] don't match). Keeps
the rem system from silently rotting. Mutation-verified it fires on text-[Npx].
- index.css: document the token-vs-arbitrary split (name the two common small steps;
rare 8/9/12/13px stay text-[Nrem]; never text-xs for 12px — it carries a line-height).
Removes all 13 remaining `any`s and flips the ESLint rule from off to error so
new ones can't creep back:
- api.ts prefs/data JSON bags: Record<string, any> -> Record<string, unknown>,
narrowed at consumers (App language guard; NotificationsPanel shapes the
notification `data` per type behind its existing typeof guards)
- catch (e: any) -> catch (e) + `e instanceof HttpError` narrowing
(SettingsPanel, SetupWizard, PlexPlayer)
- the YouTube IFrame API boundary: new lib/youtube.ts types (YTPlayer/
YTPlayerEvent/YTNamespace + a Window augmentation) replace the 6 player anys;
tsc surfaced the exact method surface to declare
- NotificationsPanel `t` props: any-options -> i18next TFunction
Gate green: typecheck (app+node+e2e), eslint 0 errors (rule now enforced),
prettier, 74 vitest.
ESLint 9 flat config, pinned. Narrow by design: the load-bearing rule is
react-hooks (rules-of-hooks + exhaustive-deps) — 33 disable comments existed for a
rule nothing ran. tsc already owns unused vars / undefined / types, so those are
turned off here to report each finding once. no-explicit-any is off: all 19 live in
the api.ts god-module that R7 rewrites, and it flips the rule back on then.
reportUnusedDisableDirectives is an error, which immediately caught two inert
`eslint-disable` comments (App.tsx, AddToPlaylist.tsx) whose effects have stable
deps — removed. no-unused-expressions allows the side-effect ternary idiom the
codebase already uses (`v.paused ? v.play() : v.pause()`).
Errors: 0. Remaining 38 are warnings (28 react-refresh DX, 10 exhaustive-deps) —
pre-existing, visible in the lint output, tracked to their epics.
peter