No special configuration is required for development.
Run yarn workspace taskcluster-notify test to run the tests.
Some of the tests will be skipped without additional credentials, but it is fine to make a pull request as long as no tests fail.
To run all of the tests, you'll first need to set up your credentials based on how they are in user-config-example.yml.
Ask a Taskcluster team member for the AWS keys, etc.
yarn install and yarn workspace taskcluster-notify test.
You can set DEBUG=taskcluster-notify,test if you want to see what's going on.