Dummy node to replace rpi-gpio node when not running on a Pi

dummy.html

<script type="text/x-red" data-template-name="rpi-gpio in">
  <div class="form-row">
    <label for="node-input-name"><i class="fa fa-tag"></i> <span data-i18n="common.label.name"></span></label>
    <input type="text" id="node-input-name" data-i18n="[placeholder]common.label.name">
  </div>
</script>


<script type="text/x-red" data-help-name="rpi-gpio in">
   <p>Dummy placeholder node for rpi-gpio.</p>
</script>

<script type="text/javascript">
    RED.nodes.registerType('rpi-gpio in',
      {
        color:"#ffdbef",
        category: 'dummy',
        defaults: {       
          name: {value:""}
        },
        inputs:0,           
        outputs:1,          
        icon: "rpi.png",    
        label: function() {    
            return this.name || "rpi-gpio-dummy"
        },
        labelStyle: function() {
            return this.name?"node_label_italic":""
        }
    });
</script>

<script type="text/x-red" data-template-name="rpi-gpio out">
  <div class="form-row">
    <label for="node-input-name"><i class="fa fa-tag"></i> <span data-i18n="common.label.name"></span></label>
    <input type="text" id="node-input-name" data-i18n="[placeholder]common.label.name">
  </div>
</script>


<script type="text/x-red" data-help-name="rpi-gpio out">
   <p>Dummy placeholder node for rpi-gpio.</p>
</script>

<script type="text/javascript">
    RED.nodes.registerType('rpi-gpio out',
      {
        color:"#ffdbef",
        category: 'dummy',
        defaults: {       
          name: {value:""}
        },
        inputs:1,           
        outputs:0,          
        icon: "rpi.png",    
        label: function() {    
            return this.name || "rpi-gpio-dummy"
        },
        labelStyle: function() {
            return this.name?"node_label_italic":""
        }
    });
</script>

dummy.js

module.exports = function (RED) {
  function dummyNode (n) {
    RED.nodes.createNode(this, n)

    var node = this

    function sendToDebug (msg) {
      RED.comms.publish('debug', {
        id: node.id,
        name: node.name,
        topic: msg.topic,
        msg: msg.payload + '',
        _path: msg._path
      })
    }

    function doProcessInput (msg) {
      RED.log.debug(node.name + ':' + msg.payload)
      sendToDebug(msg)
      node.send(msg)
    }

    this.on('input', function (msg) {
      doProcessInput(msg)
    })

    this.on('close', function () {})

    var nodeAdminEndpoint = '/dummy-gpio/' + encodeURIComponent(this.name).replace('(', '_').replace(')', '_')
    RED.log.info('Registered admin endpoint: ' + nodeAdminEndpoint)
    RED.httpAdmin.post(
      nodeAdminEndpoint,
      function (req, res) {
        var msg = {
          topic: node.name,
          payload: req.body.value
        }
        doProcessInput(msg)
        res.json({ result: 'OK' })
      })
  }

  RED.nodes.registerType('rpi-gpio in', dummyNode)
  RED.nodes.registerType('rpi-gpio out', dummyNode)
}