onyx-setup

name	onyx-setup
description	One-time configuration, initialization, CSS/font imports, i18n, and layout scaffolding for the Onyx design system. Use when setting up a new project or integrating Vue Router.
license	Apache-2.0

Onyx Setup & Integration

Configure and initialize the Onyx Vue 3 design system, mandatory styles, fonts, internationalization, and root layout scaffolding.

Setup & Initialization

Vue 3 Setup

1. Install sit-onyx.
2. Import style files and initialize the Onyx plugin.

import { createApp } from "vue";
import { createOnyx } from "sit-onyx";
import App from "./App.vue";

// Mandatory component styles
import "sit-onyx/style.css";

// Highly recommended global application styles (sets body background, font, etc.)
import "sit-onyx/global.css";

const onyx = createOnyx({
  // router: routerInstance // Option: Pass router instance here
});

const app = createApp(App);
app.use(onyx);

Nuxt Setup

1. Install @sit-onyx/nuxt.
2. Register the module in nuxt.config.ts. Do not manually call createOnyx().

export default defineNuxtConfig({
  modules: ["@sit-onyx/nuxt"],
  onyx: {
    // optional module options here
  },
});

Internationalization (i18n) Setup

English (en-US) is default and registered out-of-the-box. Additional languages must be registered manually.

Vue 3 Integration with vue-i18n

To sync translations, import the JSON file from Onyx and register it in the createOnyx initialization options:

import { createApp } from "vue";
import { createI18n } from "vue-i18n";
import { createOnyx } from "sit-onyx";
import App from "./App.vue";

// Import required Onyx translation file
import onyxDE from "sit-onyx/locales/de-DE.json";

const i18n = createI18n({
  legacy: false,
  locale: "de-DE",
  // your messages setup
});

const onyx = createOnyx({
  i18n: {
    // Syncs initial language
    locale: i18n.global.locale,
    // Message locale name MUST exactly match the code in vue-i18n
    messages: {
      "de-DE": onyxDE,
    },
  },
});

const app = createApp(App);
app.use(i18n).use(onyx);

Note: Onyx translations update automatically whenever you change the active language inside vue-i18n.

Nuxt Integration with @nuxtjs/i18n

The @sit-onyx/nuxt module automatically registers the corresponding Onyx languages for you.

Strict BCP 47 Rule: If you use 2-digit locale codes (e.g. es instead of es-ES), you MUST configure the language property inside nuxt.config.ts so Onyx can map the translation correctly:

export default defineNuxtConfig({
  modules: ["@sit-onyx/nuxt", "@nuxtjs/i18n"],
  i18n: {
    locales: [
      { code: "de-DE" }, // Standard 4-digit code works automatically
      { code: "es", language: "es-ES" }, // 2-digit code requires language mapping
    ],
  },
});

Recommended Font Setup

Install font packages @fontsource-variable/source-sans-3 and @fontsource-variable/source-code-pro. Import them into your main entrypoint:

Vue (main.ts)

import "@fontsource-variable/source-code-pro";
import "@fontsource-variable/source-sans-3";

Nuxt (nuxt.config.ts)

export default defineNuxtConfig({
  css: ["@fontsource-variable/source-code-pro", "@fontsource-variable/source-sans-3"],
});

App Layout Scaffolding (Boilerplate)

Use Onyx layout components to manage structural complexity, scroll behaviors, and responsive constraints.

Root Shell (OnyxAppLayout)

Place OnyxAppLayout at the root of the application (e.g. App.vue or app/app.vue). Use class modifiers to cap maximum width on large screens.

<template>
  <!-- Cap width at 1920px (lg breakpoint) and center align the layout -->
  <OnyxAppLayout class="onyx-grid-max-lg onyx-grid-center">
    <template #navBar>
      <OnyxNavBar app-name="Example App">
        <OnyxNavItem label="Home" link="/" />
      </OnyxNavBar>
    </template>

    <!-- Render pages inside the root layout shell -->
    <RouterView />
  </OnyxAppLayout>
</template>

Vue Router Integration

Pass the Vue router instance to createOnyx({ router }) to enable native routing integration:

• Internal links (e.g., /my-page) passed to navigation components (OnyxLink, OnyxNavBar, OnyxNavItem, OnyxMenuItem) navigate via Vue Router automatically.
• Active states on OnyxNavItem and OnyxMenuItem update automatically depending on the active route.
• Mobile flyouts close automatically upon navigation.
• Fallback: Uses native browser navigation for external links, links with target="_blank", or when no router is registered.