const ganache = require('ganache'); const defaultOptions = { blockTime: 2, network_id: 1337, mnemonic: 'phrase upgrade clock rough situate wedding elder clever doctor stamp excess tent', port: 8545, vmErrorsOnRPCResponse: false, hardfork: 'muirGlacier', }; class Ganache { async start(opts) { const options = { ...defaultOptions, ...opts }; const { port } = options; this._server = ganache.server(options); await this._server.listen(port); } async quit() { if (!this._server) { throw new Error('Server not running yet'); } await this._server.close(); } } module.exports = Ganache;