A Quick guide on how to set up and run the demo.

1. Install Rust and wasm-pack.
2. Make sure that you use 1.82.0-nightly version of Rust compiler.
3. Generate the WebAssembly library using wasm-pack build --target web.

To get the project up and running, follow these steps:

1. Provide target/wasm32-unknown-unknown/release/helios_ts.wasm
2. Install dependencies using npm install
3. Build the project using npm run build
4. Finally, serve the project using http-server

Go to http://localhost:8080 in your web browser to view the project.

For this you need to select a block for bootstrapping the light client:

1. Open https://beaconcha.in/
2. Open any finalized epoch not older than 2 weeks, e.g. https://beaconcha.in/epoch/305454
3. Find the very first slot (the earliest), e.g. in the epoch 305454: https://beaconcha.in/slot/9774528
4. Copy hash in the block root field: 0x4fb3cdfabdfe3df74c3de6157dfe816bef1130044f5982bf54f2e3a04f698e2f
5. Paste into the UI.

To avoid CORS issues, either:

• In production, you should run your own proxy server.
• For development purposes, you can:
  • Use a browser extension to disable CORS.
  • Run the browser with CORS disabled using Terminal.
  • Use a public proxy server like "https://corsproxy.io/?". Prefix the URLs in app.js with the proxy URL.