const { config } = require('hardhat'); const optimizationsEnabled = config.solidity.compilers.some(c => c.settings.optimizer.enabled); /** Revert handler that supports custom errors. */ async function expectRevertCustomError(promise, reason) { try { await promise; expect.fail("Expected promise to throw but it didn't"); } catch (revert) { if (reason) { if (optimizationsEnabled) { // Optimizations currently mess with Hardhat's decoding of custom errors expect(revert.message).to.include.oneOf([reason, 'unrecognized return data or custom error']); } else { expect(revert.message).to.include(reason); } } } } module.exports = { expectRevertCustomError, };