gun-init.js

Gun.chain.subscribe = function( publish ) {  // arrow function would loose scope i.e. its this so doesn't work
  let gun = this
  let at = gun._
  let isMap = !!at && !!at.back && !!at.back.each  // check if the map() function has been called

  if ( isMap ) {
    let store = new Map()
    publish( Array.from( store ) )

    gun = gun.on( (data, _key, as) => {
      let key = _key || ( ( data || {} )._ || {} )[ '#' ] || as.via.soul

      if ( data === null ) {
        store.delete(key)
      } else {
        store.set(key, data)
      }
      publish( Array.from(store) )
    })
  } else {
    gun = gun.on( data => publish(data) )
  }
  return gun.off()
}


gun = Gun( {
  peers: [
    // location.origin + '/gun',
    // 'https://everyday-market-eu.herokuapp.com/gun',
    // 'https://everyday-market-us.herokuapp.com/gun'
  ],
  // localStorage: false
} )