# ccf-app ccf-app is a support package for developing [CCF](https://github.com/microsoft/CCF) JavaScript or TypeScript apps. It is published as [@microsoft/ccf-app](https://www.npmjs.com/package/@microsoft/ccf-app) on npm. The package exposes commonly used functionality of CCF in high-level APIs, for example, Key-Value Store access, cryptography, and data type converters. Usage of the package is not required but recommended. TypeScript definitions are supplied with the package, but it can also be used for JavaScript projects.