1.0.7 • Public • Published

YAP command line interface

Command line tool for youngapp ecosystem.


AWS's serverless Lambda functions open a world of possibilities for running on-demand, server-side code without having to run a dedicated server. However, managing service discovery, configuring API gateways, and coordinating deployments between your app and your serverless functions can quickly become overwhelming. This document will help you get started with Connector Functions on Serverless.

Test API

npx -p @youngapp/yap-cli yap-api-test apiTestDefinitions/*.yml npx -p @youngapp/yap-cli yap-api-test dist/src/index.js apiTestDefinitions/*.yml

Runs yaml tests for your implemented api class CLI Receives two arguments:

  • relative path to your implemented class (optional, default dist/src/index.js)
  • relative path to yml test files with search pattern on a tail

Tests should run in mocha execution environment, and with default reporter so you can run it in your CI pipeline

Api class should implement handle method which confines to AWS lambda handler signature You can read more about youngapp yml testing here https://manual.youngapp.co/community-edition/functional-testing

Create project

npx -p @youngapp/yap-cli yap-create-project myProject

Creates project template for your serverless function, which will use Yap core as method router CLI Receives one argument

  • folder name for your project. Default: myYapApp


API management is the process of creating and publishing web application programming interfaces (APIs), enforcing their usage policies, controlling access, nurturing subscriber communities, collecting and analyzing usage statistics, and reporting performance.

Custom Connector

Follow instructions to create a custom connector with create-yap-connector


Policies are applied inside the gateway which sits between the API consumer and the managed API. The gateway receives all requests and usually forwards them unaltered to the underlying API. However a policy can apply changes to both the inbound request and outbound response.

Custom Policies

Follow instructions to create a custom policy with create-yap-policy

Opening issues

If you encounter a bug with YAP, we would appreciate if you inform us about it. Before opening a new issue, please go through existing issues to find the solution right away if your problem was solved before.

Attach the following details if appropriate:

  • SDK, Node.js
  • Environment and OS
  • Stack trace
  • Reduced repro case

The GitHub issues are intended for bug reports and feature requests. For quick help and questions on using the Yap SDK for JavaScript, please use the resources listed within Getting Help section. The time of our support experts is rushingly flying but even so, they would like to help you in time, and therefore, will appreciate your help in applying for support reasonably by providing full details and excluding duplicated issues.


Yap is the open source and we love contributions! If you have an idea for a great improvement or spy an issue you’re keen to fix, you can fork us on GitHub.

No contribution is too small – we encourage you to provide feedback and report issues.


This SDK is distributed under the GNU General Public License v3.0. See LICENSE.txt for more information.



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