Smart contracts

Environment variables

Make sure you have followed the steps in the quickstart.

Framework

The smart contracts run on a Hardhat environment. They are written in Solidity and reside in the smart-contracts directory.

Tests are written in JavaScript and TypeScript, and are in the tests directory. An example test is available.

Scripts are also written in JavaScript and TypeScript, and reside in the scripts directory. Some mandatory scripts are already there to get started with.

Deploying on local test chain

Follow the start developing instructions to spin up a local chain.

For all available options run:

dapp-launchpad dev -h

Internally, the dev command runs the scripts/deploy_localhost script that deploys all contracts in the correct sequence.

Warning

When working on your own smart contracts, make sure to update this script.

Local test chain explorer with Ethernal

Optionally, you can enable a local blockchain explorer, which auto-indexes all transactions, and provides a feature-loaded dashboard with an overview of the chain.

Prerequisite steps

To run the explorer, you first have to:

• Sign up on Ethernal, and create a workspace.
• Then, add your login email, password, and workspace details in the .env file in the smart-contracts directly.

Check and set the configs with dev command params --ethernal-login-email, --ethernal-login-password and --ethernal-workspace, which override the preset environment variables.

Run the local block explorer

To use it, run the dev command with -e.

Access the chain explorer at the Ethernal URL.

Deploying to production

The deploy command automates deploying to any EVM compatible chain. It runs the provided scripts/deploy_prod script to deploy all contracts in the correct sequence. When working on your own smart contracts, make sure to update this script.

For all available options run:

dapp-launchpad dev -h