Quick mockup for a simple plugin system

plugin.js

console.log('plugin loaded!')
window.parent.postMessage('PLUGIN ping', '*', false)

window.addEventListener('message', function (e) {
  console.log('PLUGIN RECEIVED', e )
  window.parent.postMessage('PLUGIN pong', '*', false)
})


// A plugin is a function that receives a metamask plugin API:
function MetaPlugin (pluginApi) {
  console.log('calling plugin func!')

  // A plugin returns an object that adheres to the MetaPlugin protocol:
  return {

    // A MetaPlugin includes a getApi() method that returns an API object.
    getApi() {
      return {

        // Let's imagine the protocol requires the API to provide a getName() method.
        getName() {
          console.log('sandboxed plugin getting name...')
          return 'test plugin'
        }
      }
    }
  }
}