// Generates Hasher artifact at compile-time using Truffle's external compiler // mechanism const path = require('path') const fs = require('fs') const genContract = require('circomlib/src/mimcsponge_gencontract.js') // where Truffle will expect to find the results of the external compiler // command const outputPath = path.join(__dirname, 'build', 'Hasher.json') function main () { const contract = { contractName: 'Hasher', abi: genContract.abi, bytecode: genContract.createCode('mimcsponge', 220) } fs.writeFileSync(outputPath, JSON.stringify(contract)) } main()