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SRCDEV Nuxt Components

Tests npm version License

NOTE

Althought this repo is public and feel free to do what you wish with it, this has been developed for use with websites we develop.

Install Nuxt Components layer

npm install --save srcdev-nuxt-components
defineNuxtConfig({
  extends: "srcdev-nuxt-components",
  css: ["srcdev-nuxt-components/app/assets/styles/main.css", "./app/assets/styles/main.css"],
});

Note: The layer CSS is not automatically included when installed from node_modules. You must explicitly add it to the css array as shown above. The second entry (./app/assets/styles/main.css) is your app's own stylesheet for overrides — create it if it doesn't exist.

Claude Code Skills

This package ships Claude Code skills — reference docs for components and development tasks — in the .claude/ directory.

To make them available in your project, add this script to your package.json:

"setup:claude": "cp -r node_modules/srcdev-nuxt-components/.claude/skills .claude/skills/srcdev-nuxt-components"

Then run it after install:

npm run setup:claude

Skills are copied into .claude/skills/srcdev-nuxt-components/ so they never conflict with or overwrite skills your own project defines. Re-running the script after a package update is safe.

Automate with postinstall (recommended)

To ensure skills are always up to date, VSCode snippets are installed, and nuxt prepare is never forgotten, add a postinstall script. npm runs this automatically after every npm install:

"scripts": {
  "setup:claude": "mkdir -p .claude/skills/srcdev-nuxt-components && cp -r node_modules/srcdev-nuxt-components/.claude/skills/. .claude/skills/srcdev-nuxt-components",
  "postinstall": "node node_modules/srcdev-nuxt-components/scripts/copy-snippets.mjs && nuxt prepare && npm run setup:claude"
}

What this does:

  1. copy-snippets.mjs — copies VSCode snippets (.code-snippets files) from the layer to your .vscode/ folder
  2. nuxt prepare — generates Nuxt type declarations
  3. setup:claude — copies skills into .claude/skills/srcdev-nuxt-components/

Note: The snippet copy must run from your consumer app's postinstall, not the layer's. npm doesn't invoke postinstall hooks for dependencies, so each consumer app is responsible for copying snippets into its own .vscode/ folder. If your app uses a standalone env flag for nuxt prepare (e.g. NUXT_STANDALONE=true), add it before nuxt prepare. This is project-specific — check your own nuxt.config.ts to confirm whether it is needed.

Scaffolding a New App

A Claude Code skill is included to scaffold a new Nuxt consumer app from scratch. It generates package.json, nuxt.config.ts, ESLint/Prettier config, the full app/ directory structure, and a CLAUDE.md — all pre-wired to extend this layer correctly.

Trigger it by saying to Claude Code:

"Scaffold a new layer consumer app. Repo: /path/to/repo, name: my-app, domain: myapp.co.uk, fonts: Fraunces, Manrope."

The skill is available at .claude/skills/new-app-scaffold.md once copied into your project via npm run setup:claude.

Consumer App Configuration

Configuration options for apps extending this layer. All options go in the consumer's nuxt.config.ts under runtimeConfig.public and can also be set via environment variable.

Colour Scheme

The layer ships with light/dark/auto colour scheme support. This includes a synchronous <head> script (FOUC prevention) and the useColourScheme() composable.

Consumer apps that only use a single default scheme can disable it entirely:

// nuxt.config.ts
runtimeConfig: {
  public: {
    colourScheme: {
      enabled: false, // disables head script injection and composable side effects
    },
  },
},

Or via environment variable:

NUXT_PUBLIC_COLOUR_SCHEME_ENABLED=false

When disabled, no data-color-scheme attribute is set on <html> and useColourScheme() is a no-op. The default is true.

See .claude/skills/colour-scheme-disable.md for the full guide.

Colour System

The layer ships a parametric oklch colour ramp. Two CSS custom properties — --theme-hue and --theme-chroma — drive an 11-step colour scale (--colour-theme-0 to --colour-theme-10) that all themed components (buttons, inputs, prompts, toasts) read through a shared set of semantic slots. Switching the palette is a two-variable change; no token-by-token remapping is required.

How it works

A formula declared on every potential theme host (html, [data-theme], [data-invalid]) computes the scale from the two params:

--colour-theme-6: oklch(56% calc(var(--theme-chroma) * 1.00) var(--theme-hue)); /* peak chroma */
--colour-theme-0: oklch(98% calc(var(--theme-chroma) * 0.045) var(--theme-hue)); /* near-white */
--colour-theme-10: oklch(25% calc(var(--theme-chroma) * 0.64) var(--theme-hue)); /* near-black */

Scale direction: 00 = lightest, 10 = darkest. Chroma tapers at both ends and peaks at step 06.

Nine semantic slots (--theme-surface, --theme-accent, --theme-text, --theme-ring, etc.) are derived from the scale using light-dark() and are shared by all components. Theme variants (data-theme="success", "warning", "error") swap --theme-hue and --theme-chroma on their element; the formula re-evaluates locally so each themed element gets its own full palette without affecting the page.

Built-in named palettes

Name Hue Used for
blue 255 Default (page-level)
red 30 Error / data-theme="error"
green 157 Success / data-theme="success"
amber 75 Available for consumer use
orange 60 Available for consumer use
sunset 50 Warning / data-theme="warning" (with hue drift)
slate 260 Near-neutral grey

Consumer app: generating a custom palette

The recommended approach for a consuming app is to generate your own named colour files. This gives you clean step variables (--gold-09, --gold-04) rather than raw oklch values in your theme overrides.

1. Create ramps.config.mjs in your project root

Define the palettes you want. You can add new ones, reuse a built-in name to override the layer's values, or do both. Consumer CSS loads after the layer, so your generated files win the cascade automatically:

// ramps.config.mjs
export const ramps = {
  // New palette — adds --gold-00..10 and --palette-gold-* vars
  gold: { hue: 85, chroma: 0.20 },

  // Override a built-in — replaces the layer's --blue-00..10 with your values
  // blue: { hue: 240, chroma: 0.18 },

  // Override the error palette — all error/invalid states use your red
  // red: { hue: 15, chroma: 0.26 },

  // Optional — add hue drift to rotate colour across the scale:
  // copper: { hue: 45, chroma: 0.21, drift: -15 },
};

2. Add the generator script to package.json

The script lives in the layer's node_modules — no copying required. Prepending it to dev, build, and generate prevents generated CSS from drifting out of sync with ramps.config.mjs:

"scripts": {
  "generate:ramps": "node node_modules/srcdev-nuxt-components/scripts/generate-consumer-ramps.mjs",
  "dev":      "npm run generate:ramps && nuxt dev",
  "build":    "npm run generate:ramps && nuxt build",
  "generate": "npm run generate:ramps && nuxt generate"
}

Do not manually edit generated files. They carry a /* GENERATED */ comment at the top and are rebuilt every time the generator runs. Put all changes in ramps.config.mjs instead.

3. Run it

npm run generate:ramps

Produces in app/assets/styles/setup/02.colours/:

  • _gold.css — --gold-00 … --gold-10 (literal oklch values)
  • _palette-params.css — --palette-gold-hue, --palette-gold-chroma

4. Import the generated files

In your app/assets/styles/setup/02.colours/index.css (create if it doesn't exist):

@import "./_palette-params";
@import "./_gold";

5. Set the palette as your theme default

/* app/assets/styles/setup/03.theming/_default.css */
:where(html) {
  --theme-hue:    var(--palette-gold-hue);
  --theme-chroma: var(--palette-gold-chroma);

  /* Page-level tokens — readable named steps, not raw oklch */
  --colour-text-accent:  light-dark(var(--gold-09), var(--gold-04));
  --colour-text-eyebrow: light-dark(var(--gold-09), var(--gold-04));
}

6. Wire up in your setup index

/* app/assets/styles/setup/index.css */
@import "./02.colours/";
@import "./03.theming/_default.css";

And in app/assets/styles/main.css:

@import "./setup/";

Hue quick reference

Range Colour
0–30 Red / pink
30–70 Orange / amber
70–100 Yellow / gold
100–160 Green
220–270 Blue
270–310 Violet

Use oklch.com to preview values before committing.

Generator (for library contributors)

Named palettes in the layer itself are maintained in ramps.config.mjs at the repo root:

npm run generate:ramps   # rebuild all layer CSS from ramps.config.mjs
npm run check:ramps      # CI: fail if generated CSS is out of date

Further reading

Guide Location
Full ramp architecture, formula details, hue drift .claude/skills/theming-colour-ramps.md
Full palette swap for a consumer app .claude/skills/theming-override-default.md
Partial token override (palette shift, buttons, inputs) .claude/skills/theming-partial-override.md
Disable light/dark mode support .claude/skills/colour-scheme-disable.md

Skills are available in your project after running npm run setup:claude.

Known Build / Production Issues

ERR_MODULE_NOT_FOUND: vue/index.mjs — 500 on every request (Node 22)

Symptom: After npm run build, running node .output/server/index.mjs returns HTTP 500 on every page. The terminal shows:

Error [ERR_MODULE_NOT_FOUND]: Cannot find module
  '.output/server/node_modules/vue/index.mjs'
Did you mean to import
  '.output/server/node_modules/.nitro/vue@3.5.34/dist/vue.cjs.prod.js'?

Root cause: Nitro's dependency tracer externalises vue and copies it to .output/server/node_modules/vue/, but only traces the CJS build (dist/vue.cjs.prod.js). Vue's package.json exports map resolves the "import" + "node" condition (used by Node 22 when importing from an ES module) to ./index.mjs — a file that was never copied. This is a Nitro tracing bug exposed by Node 22's stricter ESM condition matching, made more likely by vue.runtimeCompiler: true (which changes how Nuxt aliases Vue at build time, causing Nitro to fall back to externalising it as a node_modules package).

Fix (already applied in this repo's nuxt.config.ts):

nitro: {
  externals: {
    inline: ["vue", "@vue/runtime-core", "@vue/runtime-dom", "@vue/reactivity", "@vue/shared", "@vue/server-renderer"],
  },
},

This tells Nitro to bundle these packages inline rather than externalise them, which sidesteps the runtime resolution entirely.

Consumer apps: This config is not gated behind isStandalone, so it is inherited automatically by any app that extends this layer. No consumer-side action is required.

When it's safe to remove: If a future Nitro release fixes the dependency tracer so that all export-condition files are copied correctly, the inline list can be removed. Verify by checking that .output/server/node_modules/vue/index.mjs exists after a clean build without the config.

Development Environment (.vscode)

The .vscode directory contains Visual Studio Code configuration files to ensure a consistent development experience across the project:

Workspace Configuration

  • settings.json - VS Code workspace settings including:
    • Code formatting configuration (2-space indentation, auto-formatting on save)
    • ESLint, Prettier, and Stylelint integration
    • File handling settings (trim whitespace, final newlines, Unix line endings)
    • CSS variable recognition for the project's custom properties

Recommended Extensions

  • extensions.json - Curated list of VS Code extensions for optimal development:
    • Vue.js Development: vue.volar - Vue 3 language support
    • Nuxt.js Development: nuxtr.nuxtr-vscode - Enhanced Nuxt development tools
    • Code Quality: dbaeumer.vscode-eslint, esbenp.prettier-vscode - Linting and formatting
    • CSS Development: willofindie.vscode-cssvar - CSS custom property IntelliSense
    • Testing: vitest.explorer - Vitest test runner integration
    • Markdown: davidanson.vscode-markdownlint - Markdown linting
    • Productivity: jkjustjoshing.vscode-text-pastry, formulahendry.auto-rename-tag

Code Snippets

The .vscode directory includes comprehensive code snippets for rapid component development:

Contact Form — Resend Setup

The contact form at /ui/contact-section sends enquiries via Resend. No extra packages are required — the server route calls the Resend REST API directly.

1. Create a Resend account

Sign up at resend.com. The free tier allows 3,000 emails/month (100/day), which is more than sufficient for a contact form.

2. Verify a sending domain

In the Resend dashboard go to Domains → Add Domain and follow the DNS instructions for your domain. This is required before you can send from a custom from address in production.

Local development shortcut: you can skip domain verification and use Resend's shared sandbox address onboarding@resend.dev as the from address. Emails will only be delivered to the email address registered on your Resend account, so it is safe for testing.

3. Create an API key

In the Resend dashboard go to API Keys → Create API Key. Copy the key — it is only shown once.

4. Configure environment variables

Copy .env.example to .env and fill in the three values:

cp .env.example .env
NUXT_RESEND_API_KEY=re_xxxxxxxxxxxxxxxxxxxxxxxxxxxx
NUXT_CONTACT_EMAIL_TO=you@yourdomain.com
NUXT_CONTACT_EMAIL_FROM=Enquiries <hello@yourdomain.com>
Variable Description
NUXT_RESEND_API_KEY API key from the Resend dashboard
NUXT_CONTACT_EMAIL_TO The inbox that receives enquiries
NUXT_CONTACT_EMAIL_FROM The "from" address shown to recipients — must use a verified Resend domain

Nuxt maps NUXT_* variables to runtimeConfig automatically at runtime. The values are server-only and never included in the client bundle.

5. Vercel deployment

Rather than committing a .env file, add the variables directly in the Vercel dashboard:

  1. Open your project in vercel.com
  2. Go to Settings → Environment Variables
  3. Add each of the three NUXT_* variables, setting the environment to Production (and Preview if you want the form to work on preview deployments too)
  4. Redeploy — Vercel injects the variables at build and runtime automatically

.env is listed in .gitignore and should never be committed to the repository.

Testing

This project has two test layers that run independently.

Unit & Snapshot Tests (Vitest)

Runs component logic, HTML structure, and snapshot regression tests. No browser or running server required.

# Run in watch mode (development)
npm run test

# Run once (CI / pre-commit)
npm run test:run

# Open the Vitest UI (browser-based test explorer)
npm run test:ui

# Update snapshots after an intentional component change
npm run test:update

Visual Regression Tests (Playwright)

Runs pixel-level screenshot comparisons against Storybook. Requires Storybook to be running first.

# 1. Start Storybook
npm run storybook:serve

# 2. In a separate terminal, run visual tests
npm run playwright

# Update visual baselines after an intentional visual change
npm run playwright:update

# View Playwright test report
npx playwright show-report

Visual tests run across Chromium, Firefox, and WebKit. Snapshot baselines are stored per browser — expect three PNG files per component test.

What Each Layer Catches

Change Unit tests Visual tests
Class added / removed ✅ ✅
HTML structure changed ✅ ✅
Font weight / color / spacing changed ❌ ✅
Prop or slot logic broken ✅ ❌
Accessibility attribute missing ✅ ❌

Storybook

Storybook is used for isolated component development and as the target for visual regression tests. It runs as a separate Vite-based dev server.

Scripts

# Start Storybook dev server (http://localhost:6006)
npm run storybook

# Build a static Storybook (outputs to storybook-static/)
npm run storybook:build

# Build and serve locally — used before running Playwright visual tests
npm run storybook:serve

# Clear Storybook and Vite caches — run this if styles appear stale after changes
npm run storybook:cache:clean

After clearing the cache, restart with npm run storybook. The cache clear is particularly useful when changes inside @layer CSS blocks are not reflected in the running dev server.

Fonts

@nuxt/fonts is disabled in Storybook (detected via process.env.STORYBOOK in nuxt.config.ts). Fonts are served instead from local files in .storybook/public/_fonts/, declared in .storybook/fonts.css and imported in .storybook/preview.ts.

Font Format Source
Poppins TTF .storybook/public/_fonts/poppins/
Playfair Display woff2 .storybook/public/_fonts/playfair-display/

To add a new font, see .claude/skills/storybook-add-font.md.

Core Components

  • srcdev-nuxt3-component-boilerplate.code-snippets - Base component template with prop validation
  • srcdev-nuxt3-page-layout.code-snippets - Page layout scaffolding
  • srcdev-nuxt3-pinia-store-setup.code-snippets - Pinia store configuration

UI Components

  • srcdev-nuxt3-accordian-component.code-snippets - Accordion component templates
  • srcdev-nuxt3-carousel-basic-component.code-snippets - Basic carousel implementation
  • srcdev-nuxt3-carousel-flip-component.code-snippets - Flip carousel variant
  • srcdev-nuxt3-container-glow-component.code-snippets - Container with glow effects
  • srcdev-nuxt3-dialog-component.code-snippets - Modal dialog templates
  • srcdev-nuxt3-display-banner-component.code-snippets - Display banner component
  • srcdev-nuxt3-display-details-component.code-snippets - Collapsible details component
  • srcdev-nuxt3-display-prompt-component.code-snippets - Alert/notification prompts
  • srcdev-nuxt3-expanding-panel-component.code-snippets - Expandable panel component
  • srcdev-nuxt3-layout-row.code-snippets - Layout row component
  • srcdev-nuxt3-responsive-header-component.code-snippets - Responsive navigation header
  • srcdev-nuxt3-tabs-component.code-snippets - Tab component system

Each snippet provides both HTML template usage examples and TypeScript setup code, enabling developers to quickly implement components with proper typing and configuration.

About

Nuxt components layers

storybook.srcdev.co.uk

Topics

nuxt-test-utilsnuxt4piniaplaywright-testsstorybookvitest

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