A simple calculator for your dashboard.

1. Make sure HACS is installed
2. Add this repository as a custom repository in HACS:
   • Go to HACS → Frontend
   • Click the three dots menu → Custom repositories
   • Add repository URL with category "Lovelace"
3. Install the Calculator Card
4. Restart Home Assistant

1. Download calculator-card.js from the latest release
2. Copy it to <config>/www/calculator-card.js
3. Add the resource in Home Assistant:
   • Go to Settings → Dashboards → Resources
   • Add /local/calculator-card.js as a JavaScript Module

Add the card to your Lovelace dashboard:

type: custom:calculator-card
title: My Card

The easiest way to develop is using the included dev container:

1. Install VS Code with the Dev Containers extension
2. Open the project folder in VS Code
3. Press Ctrl+Shift+P → "Dev Containers: Reopen in Container"
4. Wait for the container to build (first time takes ~2-3 minutes)

yarn install    # Install dependencies (automatic on container creation)
yarn start      # Dev server with hot reload (http://localhost:5000)
yarn build      # Lint and build
yarn lint       # Check code quality
yarn rollup     # Production build only

• Dev Server: http://localhost:5000 - Live reload development
• Home Assistant: http://localhost:8123 - Test environment (user: dev / pass: dev)

1. In Home Assistant, go to Settings → Dashboards
2. Create a new Dashboard
3. Add the card from the GUI

1. Create a new release on GitHub with a semver tag (e.g., v1.0.0)
2. GitHub Actions will automatically:
   • Validate the tag format
   • Update version in package.json and src/consts.ts
   • Build and attach the JS file to the release

MIT License - see LICENSE file for details