The serverless-cqrs component is really just a thin wrapper around the read-model and write-model components. It simplifies their API by allowing you to build the entire service with a single command.
To install, first run:
npm i --save serverless-cqrs
Then in your code:
const{
readModelBuilder,
writeModelBuilder,
}=require('serverless-cqrs')
const readModel = readModelBuilder.build({
reducer,
adapter,
eventAdapter,
})
const writeModel = writeModelBuilder.build({
actions,
reducer,
adapter,
})
(bring your own adapters and friends ;)
If you would like to have a look at the source, you'll see that it really doesn't do much on it's own, it just simplifies a bit the initialization of your models.