Pre-requisites

• An Ethereum wallet private key, which will be the only wallet able to withdraw fees from the contract
• The wallet address (starting with 0x)

To use this code

Create a file .env in the project root directory containing the wallet private keys (or mnemonic) and api key:

cd proxy-contract
yarn && yarn compile

To deploy the contract on the Rinkeby testnet for the first time

yarn hardhat run --network rinkeby --config hardhat.config.ts scripts/deploy.js

Take note of the contract address for interacting with the smart contract from now on

Check the contract has been deployed on Etherscan

To make changes to the existing contract on Rinkeby

Update scripts/upgrade.js with the address of your recently deployed contract ☝️

Edit the contract code in contracts/Swap.sol

yarn hardhat run --network rinkeby scripts/upgrade.js

To deploy the contract to a local blockchain

cd bridge-proxy-contract && yarn hardhat node  # in a separate terminal window
yarn hardhat run --network localhost scripts/deploy.js

To interact with the contract running on the local node using the command line

yarn hardhat run --network localhost scripts/upgrade.js
yarn hardhat console --network localhost
const factory = await ethers.getContractFactory('Swap');
const contract = await factory.attach('0x9fE46736679d2D9a65F0992F2272dE9f3c7fa6e0');
await contract.swap(...);

To interact with the contract running on the local node using JavaScript

yarn hardhat run --network localhost ./scripts/index.js

To run the unit tests

yarn test

Build and check

yarn -s contracts:analyze
yarn contracts:size