button.js

// boilerplate atkapi header
const InOut = require('../../lib/jsunit.js')
let Input = InOut.Input
let Output = InOut.Output
let State = InOut.State
let Button = InOut.Button

// a constructor, a fn, a javascript mess
function uiButton() {

    var button = {
        // descriptions are used in UI
        description: {
            name: 'Button!',
            alt: 'for clicking'
        }
    }

    button.state = State()
    // alias !
    var state = button.state 

    state.button = Button('WHAM')
    state.onChange('button', onButtonPress)

    button.inputs = {
        thru: Input('any', onButtonPress) // makes anything into '1' event
    }

    button.outputs = {
        whammy: Output('number')
    }

    function onButtonPress(evt){
        button.outputs.whammy.emit(1)
    }

    return button
}

// exports 
module.exports = uiButton