[Home](./index.md) > [@contract-case/case-boundary](./case-boundary.md) > [ContractCaseBoundaryConfig](./case-boundary.contractcaseboundaryconfig.md) > [contractFilename](./case-boundary.contractcaseboundaryconfig.contractfilename.md) ## ContractCaseBoundaryConfig.contractFilename property The filename where the contract will be written. If you provide this, `contractDir` is ignored **Signature:** ```typescript readonly contractFilename?: string; ```