Example EVM App

Commands

Command	Flag	Description
yarn build		Uses Hardhat and Solidity to compile the smart contracts
	--op	Enables optimization
yarn deploy		Uses Hardhat and Solidity to compile and deploy smart contracts
		Will not re-deploy previous smart contracts unless --reset is used
	--reset	Redeploys all smart contracts
	--seed	Runs seed script after deployment
	--op	Enables optimization
yarn local		Uses Hardhat and Solidity to compile and deploy smart contracts to localhost
		Will always re-deploy smart contracts
		Will always run seed script
	--op	Enables optimization
yarn test		Uses Hardhat and Jest to test the smart contracts

Development

Extensions

• Code consistency
  • ES Lint (dbaeumer.vscode-eslint)
  • Prettier (esbenp.prettier-vscode)
  • TS Import Sorter (dozerg.tsimportsorter)
• Intellisense
  • Solidity (juanblanco.solidity)

Deployments

• Hardhat
  • Compilation
  • EVM provider
• Custom scripts
  • Load previous contracts
  • Save deployed contracts

Testing

• Custom matchers
  • BigNumberMatchers
  • RevertedWithMatchers
• Jest Config
  • Increases test timeout to 10 seconds
  • Loads Jest setup
  • Loads more reliable node context
• Jest Setup
  • Loads custom matchers

Utils

• chain.js
  • Get Timestamp (pseudo now)
  • Time Travel
• constants.js
  • addressZero: 0x0000000000000000000000000000000000000000
  • none: 0 wei
  • dust: 1 wei
  • maxUint: 0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
• contracts.js
  • attach
    • Load deployed contract
  • newContract
    • Deploy new contract
  • track/trackx
    • Lookup values before and after processFn, then return the difference
• snap.js
  • Save a snapshot of the chain, then restore later
    • Can only save 1 state - calling the snapshot method multiple times causes the newest state to replace the previous state
    • Restore automatically re-saves the previous snapshot
• units.js
  • Helper methods to convert from number to BigNumber
  • Helper methods to convert from string to bytes32