A Lit Element web component htm webserver for esphome devices.

• 30 sec heartbeat showing node connection is active
• Built with Lit Element web components
• Completely standalone - no other external dependencies 9K compressed
• Light and Dark themes
• Primary theme - currently light blue - can be overridden
• Embedded ESP home logo svg
• Entities are discovered and display
• No css fetch - index page fetches one js file

• Support for compressed files in flash for Standalone no internet nodes
• Add Climate
• Add Select drop list
• Add Number editing
• Potentially use an optional card layout instead of a table

web_server:
  port: 80
  css_url: ""
  js_url: https://esphome.io/_static/v2/www.js
  version: 2

git clone https://github.com/esphome/esphome-webserver.git
cd esphome-webserver
npm install

Build and deploy all packages from the root directory:

npm run build

Starts a dev server on http://localhost:3000

cd packages/v2
npm run start

Events from a real device can be proxied for development by using the PROXY_TARGET environment variable.

PROXY_TARGET=http://nodemcu.local npm run build
# and/or
PROXY_TARGET=http://nodemcu.local npm run serve

Alternatively, update this line in packages/[version]/vite.config.ts to point to your real device.

const proxy_target = process.env.PROXY_TARGET || "http://nodemcu.local";

The json api will POST to the real device and the events are proxied

cd packages/v2
npm run build

The build files are copied to _static/v2 usually for deployment to https://oi.esphome.io/v2 or your /local/www Home Assistant folder

If you customise, you can deploy to your local Home Assistant /local/www/_static/v2 and use:

web_server:
  port: 80
  version: 2
  js_url: http://homeassistant.local:8123/local/_static/v2/www.js

To use a specific version of a CDN hosted device dashboard, you can use the following override as an example:

web_server:
  port: 80
  version: 3
  js_url: https://oi.esphome.io/v3/www.js

cd packages/v2
npm run serve

Starts a production test server on http://localhost:5001 Events and the json api are proxied.