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Acala EVM+ Hardhat Examples

If you are searching for Truffle or Waffle examples, please follow the links.

Current tutorials

  1. hello-world: This tutorial contains instructions on how to setup a simple Hardhat project that is compatible, deployable and testable with Acala EVM+.

  2. echo: This tutorial builds upon the previous one and adds return values to the function calls, events and changes of storage variables.

  3. token: This tutorial builds upon the previous ones and adds the ERC20 token using OpenZeppelin dependency.

  4. NFT: This tutorial demonstrates how to build a NFT contract in Acala EVM+.

This section of tutorial uses Acala EVM+ specific mechanics and is incompatible with the legacy EVM. It introduces the use of our precompiled smart contracts that are accessible to anyone using the Acala EVM+

  1. precompiled-token: This tutorial utilizes the precompiled and predeployed ERC20 tokens present in the Acala EVM+. It uses the ADDRESS utility, which serves as an automatic getter of the precompiled smart contract addresses, so we don't have to seach for them in the documentation and hardcode them into our project.

  2. DEX: This tutorial utilizes the predeployed DEX smart contract to swap the ERC20 tokens of the predeployed Token smart contracts, which we instantitate with the help of the ADDRESS utility.

  3. EVM: This tutorial utilizes the predeployed EVM smart contract to manage the account preferences and the smart contract that the account maintains. It introduces the publishing of the smart contracts in the Acala EVM+ as well as enabling and disabling the developer mode of the account directly in the Acala EVM+.

  4. AdvancedEscrow: This tutorial utilizes the predeployed DEX, Tokens and Schedule smart contracts in order to build an escrow service that accepts any of the predeployed ERC20 tokens, swaps them for AUSD and at a set block releases the funds in AUSD or in another predeployed ERC20 token.

  5. UpgradeableGreeter: This tutorial explores on how to use the proxy-upgrade pattern in order to deploy, manage and upgrade upgradeable smart contracts in Acala EVM+.

Start a Local Development Stack

clean up docker containers

docker compose down -v

start the local development stack

docker compose up

once you see logs like this, the local development stack is ready. It's ok if there are some warnings/errors in the logs, since there is no transaction in the node yet.

 --------------------------------------------
              🚀 SERVER STARTED 🚀
 --------------------------------------------
 version         : bodhi.js/eth-rpc-adapter/2.7.7
 endpoint url    : ws://mandala-node:9944
 subquery url    : http://graphql-engine:3001
 listening to    : 8545
 max blockCache  : 200
 max batchSize   : 50
 max storageSize : 5000
 safe mode       : false
 local mode      : false
 rich mode       : false
 http only       : false
 verbose         : true
 --------------------------------------------

For more information about the local development stack, please refer to the doc.