@gerege-systems/ui

v0.17.2

Published

11 days ago

Refined-minimal Tailwind v4 + React design system — 50+ accessible, themeable primitives.

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@gerege-systems/ui

A refined-minimal Tailwind v4 + React design system. Production-grade primitives — Button through DataGrid — plus composed patterns (authentication, app shell, settings, etc.).

Showcase: ui.gecore.mn
Components: ui.gecore.mn#components
Templates: ui.gecore.mn#templates

Aesthetic direction: Linear / Vercel / Stripe Dashboard / Notion / Raycast. Neutral-dominant, one accent, hairline borders, generous whitespace, fast quiet motion. See docs/PHILOSOPHY.md.

Install

pnpm add @gerege-systems/ui            # peers: react ^18 || ^19, react-dom ^18 || ^19

1. Fonts — Geist + Geist Mono are referenced by the tokens but not bundled (Inter is only a fallback in the stack). Google Fonts serves the cyrillic-ext subset automatically; self-hosting (≤4 woff2, weights 400/500/600) is equally fine. Add to <head>:

<link rel="preconnect" href="https://fonts.googleapis.com" />
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
<link
  href="https://fonts.googleapis.com/css2?family=Geist:wght@400;500;600&family=Geist+Mono:wght@400;500&display=swap"
  rel="stylesheet"
/>

2. CSS — pick one:

/* a) No Tailwind in your app: one precompiled sheet (tokens + base + every utility the components use) */
@import '@gerege-systems/ui/styles.css';

/* b) Your app already uses Tailwind v4: share the tokens and let Tailwind compile the library's classes */
@import 'tailwindcss';
@import 'tw-animate-css'; /* required on this path — overlays use animate-in / animate-out */
@import '@gerege-systems/ui/theme.css';
@source "../node_modules/@gerege-systems/ui/dist-lib";

Path (b) needs tw-animate-css installed (pnpm add -D tw-animate-css; it is an optional peer). Path (a) already bundles it.

3. Dark mode — toggle the dark class on <html>; every token flips and color-scheme follows. Set it from a blocking script before first paint to avoid a flash (three states: light / dark / system). data-theme is not used.

4. Providers — <Toaster /> once near the root if you use toast(); wrap the app in <TooltipProvider> if you use Tooltip. Nothing else is required.

import { Button, Toaster, TooltipProvider, toast } from '@gerege-systems/ui';

export function App() {
  return (
    <TooltipProvider>
      <Button onClick={() => toast({ title: 'Saved' })}>Save</Button>
      <Toaster />
    </TooltipProvider>
  );
}

Next.js App Router — since 0.10 every built module carries a 'use client' banner, so import { Button } from '@gerege-systems/ui' works directly inside Server Components without a local re-export file. Put the CSS import and fonts in app/layout.tsx. Note: the pure helpers (formatDate, formatNumber, formatMNT, mnStrings, defaultStrings) are also client-marked today — they still run fine in Server Components (the directive only affects the boundary), but they are not tree-shaken into a server-only chunk.

Name-addressed icons — Icons.* (curated, tree-shaken) ships in the main entry. The lazy <Icon name="…"> + iconNames list lives in a separate entry so its ~1500-icon import map never enters your bundle unless asked for:

import { Icon } from '@gerege-systems/ui/icon';
<Icon name="calendar" className="size-4" />;

The package is ESM-only, ships one module per component (sideEffects limited to CSS), so import { Button } pulls in about 8 KB gzipped — no calendar, drawer, or form dependencies.

Localisation (Mongolian built in)

Every built-in string (close/dismiss labels, placeholders, "No results.", pagination summary, error-state copy…) is typed in UiStrings and read through useStrings(). Defaults are English; a full Mongolian set ships as mnStrings.

import { DesignSystemProvider, mnStrings } from '@gerege-systems/ui';
<DesignSystemProvider strings={mnStrings}>…</DesignSystemProvider>; // whole library in Mongolian
<DesignSystemProvider strings={{ dialog: { close: 'Schließen' } }}>…</DesignSystemProvider>; // partial override, deep-merged over defaults

Precedence is per-component props (placeholder, labels, aria-label) → nearest provider → defaultStrings. Templates use {name} placeholders, e.g. pagination.showing: '{from}–{to} / {total}'.

Design rules

This library implements the gerege-systems design-research guidelines (rendered site) — colour, type, spacing, components, accessibility, tokens. design-research is the source of truth (canonical numbers in 00-defaults.md); docs/PHILOSOPHY.md is the library-specific summary.

Local development

This package lives in the gerege-ui monorepo (packages/ui). The showcase site is a separate workspace (apps/site) that consumes this package's source directly. From the repo root:

pnpm install
pnpm dev           # showcase site (apps/site) — edits to this package hot-reload
pnpm build:lib     # build this library → packages/ui/dist-lib/

Inside packages/ui itself, pnpm build produces the distributable bundle and pnpm test runs the component tests.

Tech stack

Tailwind CSS v4 — tokens defined in @theme in src/styles/theme.css (globals.css = tailwind + tw-animate-css + theme)
React 18 / 19 + TypeScript 5.7
Radix UI primitives for accessibility-correct overlays
class-variance-authority + cn() (clsx + tailwind-merge)
Lucide icons (16 / 20px, 1.5 stroke)
Geist sans + Geist Mono monospace

Project structure

src/
├── styles/
│   ├── theme.css             # @theme tokens, semantic vars, dark variant, base layer
│   └── globals.css           # tailwindcss + tw-animate-css + theme.css
├── lib/
│   ├── utils.ts              # cn() + uid()
│   ├── format.ts             # formatDate / formatNumber / formatMNT
│   └── strings.ts            # UiStrings, defaultStrings (+ strings.mn.ts)
├── components/
│   └── ui/                   # primitives, one file per component
├── hooks/
│   ├── use-toast.ts
│   └── use-media-query.ts
└── icons/                    # curated Lucide re-exports
docs/
├── PHILOSOPHY.md             # the 6 refined-minimal principles
├── VOICE.md                  # content + tone of voice
└── ACCESSIBILITY.md          # WCAG checklist + contrast ratios

Component index

Inputs

Input — text / email / password / number / search with prefix, suffix, error
Textarea — auto-resize multi-line input
Select — single-choice menu (Radix)
MultiSelect — chip-based multi-choice picker
Combobox — searchable single-select, sync or async
Checkbox — including indeterminate
RadioGroup — mutually-exclusive choices
Switch — instant-apply binary toggle
Slider — single + range
DatePicker — single + range
Form primitives — react-hook-form bindings

Buttons

Button — primary · secondary · outline · ghost · destructive · link
IconButton — square icon-only variant
Pagination — numbered + jumps + page-size

Feedback

Alert — inline banner, dismissible
Toast + useToast hook
Spinner — accent / neutral / on-accent tones
Progress — linear + circular, determinate + indeterminate
Skeleton — text, avatar, card variants
EmptyState
ErrorState — 404 / 500 / generic

Navigation

TopNav + TopNavLink
Sidebar + SidebarSection + SidebarItem + SidebarGroup
Breadcrumbs — with overflow ellipsis
Tabs — underline + pills variants
Stepper — horizontal + vertical

Layout

Card + CardHeader/Title/Description/Content/Footer
Separator
ScrollArea — Radix-backed styled scroll
Accordion — single + multiple

Overlays

Dialog + ConfirmationDialog
Sheet — left / right / top / bottom
Popover
Tooltip — 500ms delay default
DropdownMenu — submenus, separators, kbd
ContextMenu — right-click menu
CommandPalette — ⌘K palette

Data display

Table + TableSortHeader
DataGrid — column visibility, filter, sortable
Badge — subtle + outline, 6 tones
Avatar + AvatarGroup

Typography

Kbd — keyboard shortcut indicator

Blocks (page templates)

Whole-page compositions — dashboard, settings, auth, pricing, data table, record detail, onboarding, first-run — are not shipped as importable components. They live in the showcase as copy-paste blocks: complete pages assembled from the primitives above, with the full source on the page. Read it, copy it, adapt it — no opaque <Dashboard /> import. Browse them under Templates in the showcase.

Documentation

docs/PHILOSOPHY.md — the six principles + forbidden list
docs/VOICE.md — tone of voice, button labels, error copy formula
docs/ACCESSIBILITY.md — WCAG AA contrast table, keyboard map

Contributing

Read docs/PHILOSOPHY.md first — the forbidden list is non-negotiable.
Components reference semantic tokens (bg-card, text-accent), never raw palette steps (bg-indigo-500).
Every interactive element ships with: default, hover, focus-visible, active, disabled, loading, and (where applicable) error / success states.
Forward refs correctly; set displayName.
Run pnpm typecheck && pnpm test before opening a PR.

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Readme

@gerege-systems/ui

Install

Localisation (Mongolian built in)

Design rules

Local development

Tech stack

Project structure

Component index

Inputs

Buttons

Feedback

Navigation

Layout

Overlays

Data display

Typography

Blocks (page templates)

Documentation

Contributing