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mqtt-backend/node_modules/mqemitter/example.js

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+'use strict'
+
+const mqemitter = require('.')
+
+const mq = mqemitter()
+
+function subscribe (topic, obj) {
+  mq.on(topic, callback)
+  obj.close = close
+
+  function callback (value, cb) {
+    obj.push(value)
+    cb()
+  }
+
+  function close () {
+    mq.removeListener(topic, callback)
+  }
+}
+
+class MyQueue {
+  push (value) {
+    console.log(value)
+  }
+}
+
+const a = new MyQueue()
+const b = new MyQueue()
+const c = new MyQueue()
+
+subscribe('hello', a)
+subscribe('hello', b)
+subscribe('hello', c)
+
+mq.emit({ topic: 'hello', payload: 'world' })
+
+a.close()
+b.close()
+c.close()
+
+mq.emit({ topic: 'hello', payload: 'world' })
+
+// const listeners = new Map()
+//
+//
+// const queues = new Map()
+//
+// function subscribe (topic, queue) {
+//   if (listeners.has(topic)) {
+//
+//   }
+//
+//   function callback (err) {
+//
+//     for (var value of queues) {
+//     }
+//   }
+//
+//   listeners.set(topic, callback)
+//   queues.set(topic, [queue])
+// }