remove bluebird

lib/relay.js

@@ -1,10 +1,15 @@
 'use strict';
 
 var url = require('url');
-var PromiseA = require('bluebird');
 var sni = require('sni');
 var Packer = require('proxy-packer');
 var PortServers = {};
+var PromiseA;
+try {
+  PromiseA = require('bluebird');
+} catch(e) {
+  PromiseA = global.Promise;
+}
 
 function timeoutPromise(duration) {
   return new PromiseA(function (resolve) {

package.json

@@ -37,7 +37,6 @@
   },
   "homepage": "https://git.coolaj86.com/coolaj86/telebit-relay.js",
   "dependencies": {
-    "bluebird": "^3.5.1",
     "cluster-store": "^2.0.8",
     "finalhandler": "^1.1.1",
     "greenlock": "^2.2.4",
@@ -51,6 +50,9 @@
     "sni": "^1.0.0",
     "ws": "^5.1.1"
   },
+  "trulyOptionalDependencies": {
+    "bluebird": "^3.5.1"
+  },
   "engineStrict": true,
   "engines": {
     "node": "10.2.1"