Accessible Angular components inspired by the public COSS UI catalogue at coss.com/ui/docs.

Hosted documentation: https://coss-ui.lordsarcastic.dev

This repository contains:

• projects/coss-ui-angular: publishable Angular library.
• projects/docs: documentation website built with the library components.
• .github/workflows/ci.yml: CI for Biome formatting/linting, Angular tests, and production builds.

npm install
npm start

Build everything:

npm run build

Run checks:

npm run ci

Install the package after it is published:

npm install @lordsarcastic/coss-ui-angular

Import individual standalone components or directives:

import { Component } from '@angular/core';
import { CossButtonDirective, CossInputDirective, CossFieldComponent } from '@lordsarcastic/coss-ui-angular';

@Component({
  standalone: true,
  imports: [CossButtonDirective, CossInputDirective, CossFieldComponent],
  template: `
    <coss-field>
      <label cossLabel for="email">Email</label>
      <input cossInput id="email" type="email" placeholder="you@example.com" />
    </coss-field>

    <button cossButton type="button">Save</button>
  `,
})
export class ExampleComponent {}

Or import the full collection:

import { COSS_COMPONENTS } from '@lordsarcastic/coss-ui-angular';

The components are styled with Tailwind utility classes and CSS variables. Add the library to your Tailwind content scan:

export default {
  content: ['./src/**/*.{html,ts}', './node_modules/@lordsarcastic/coss-ui-angular/**/*.{mjs,js}'],
};

Define the design tokens in your global stylesheet:

:root {
  --background: 5 5 9;
  --foreground: 255 255 255;
  --card: 10 10 15;
  --card-foreground: 255 255 255;
  --popover: 10 10 15;
  --popover-foreground: 255 255 255;
  --primary: 246 166 35;
  --primary-foreground: 5 5 9;
  --secondary: 38 38 45;
  --secondary-foreground: 255 255 255;
  --muted: 38 38 45;
  --muted-foreground: 163 163 163;
  --accent: 39 39 42;
  --accent-foreground: 255 255 255;
  --destructive: 239 68 68;
  --destructive-foreground: 255 255 255;
  --border: 38 38 38;
  --input: 38 38 38;
  --ring: 246 166 35;
  --info: 59 130 246;
  --info-foreground: 255 255 255;
  --success: 34 197 94;
  --success-foreground: 5 5 9;
  --warning: 245 158 11;
  --warning-foreground: 5 5 9;
}

The library exports Angular versions of the COSS UI surface: accordion, alert, alert dialog, autocomplete, avatar, badge, breadcrumb, button, calendar, card, checkbox, checkbox group, collapsible, combobox, command, date picker, dialog, drawer, empty state, field, fieldset, form, frame, group, input, input group, keyboard key, label, menu, meter, number field, OTP field, pagination, popover, preview card, progress, radio group, scroll area, select, separator, sheet, skeleton, slider, spinner, switch, table, tabs, textarea, toast, toggle, toggle group, toolbar, and tooltip.

Native controls are preferred where they provide the strongest behavior: button, a, input, select, textarea, details, summary, date input, radio input, and form elements. Composite components expose ARIA roles and state such as dialog, menu, radiogroup, checkbox, switch, progressbar, meter, tablist, aria-expanded, aria-selected, and aria-current.

Build the library before publishing:

npm run build:lib
cd dist/coss-ui-angular
npm publish