A npm module that adds Substrate light-client functionality to any JavaScript environment, from in-browser applications to browser extensions and electron apps up to IOT devices.

It contains Wasm light clients from various chains, bundled in a single package. @substrate/light makes running a light-client as easy as installing a npm module.

Lichen is a light-client-based, in-browser wallet for Substrate.

The Light UI is meant to be an intuitive interface for beginner users to easily interact with various Substrate chains. It is provided in two forms:

• A browser one-page application
• A Chrome/Firefox browser extension

Both provide the same functionalities and use the same UI, feel free to choose the medium that suits you best.

A very alpha version of the browser extension can be found in the Github Releases page.

You can also check out the master branch and build from source.

As of v0.3.0, the main functions are as follows:

• Identity management - manage accounts and addresses, including ability to create, edit, restore, backup, and forget them.
• Transfer balance - send and receive funds in the currency of the relevant substrate chain.
• Embed a light client in a browser extension, and let Light UI be the user interface of this extension.

And here is a rough roadmap of what's coming next (see the v0.4.0-MVP milestone for details):

• Handle changing:
  • provider,
  • chain spec,
  • user uploaded light client WASM blob or chain spec.
• Provider injection inside dapps.
• Improve overall beginner-friendliness (e.g. #67).

Make sure you have yarn >= 1.13.0 and nodejs >= 10.10.0. Then run

git clone https://github.com/paritytech/substrate-connect
cd ./substrate-connect
yarn install

yarn build:extension

Then install the extension:

• Chrome:
  • go to chrome://extensions/
  • ensure you have the Development flag set
  • "Load unpacked" and point to packages/extension-app/build
  • if developing, after making changes - refresh the extension
• Firefox:
  • go to about:debugging#addons
  • check "Enable add-on debugging"
  • click on "Load Temporary Add-on" and point to packages/extension-app/build/manifest.json
  • if developing, after making changes - reload the extension

We welcome any and all contributions whether it is in the form of raising an issue, filing a PR, or participating in the discussions. Please read the Contributing Docs first.

If you would like to run this project with hot-reloading, use the following commands:

• yarn start:light-app: If you would only like to modify the UI, run this command and visit http://localhost:3000