cosmos-sdk/docs/lotion/building-an-app.md

Building an App

::: tip Lotion requires node v7.6.0 or higher, and a mac or linux machine. :::

Installation

$ npm install lotion

Simple App

app.js:

let lotion = require('lotion')

let app = lotion({
  initialState: {
    count: 0
  }
})

app.use(function (state, tx) {
  if(state.count === tx.nonce) {
    state.count++
  }
})

app.listen(3000)

run node app.js, then:

$ curl http://localhost:3000/state
# { "count": 0 }

$ curl http://localhost:3000/txs -d '{ "nonce": 0 }'
# { "ok": true }

$ curl http://localhost:3000/state
# { "count": 1 }

Learn More

You can learn more about Lotion JS by visiting Lotion on Github.