增加mqtt

node_modules/es6-symbol/lib/private/setup/symbol-registry.js

@@ -1,23 +0,0 @@
-"use strict";
-
-var d              = require("d")
-  , validateSymbol = require("../../../validate-symbol");
-
-var registry = Object.create(null);
-
-module.exports = function (SymbolPolyfill) {
-	return Object.defineProperties(SymbolPolyfill, {
-		for: d(function (key) {
-			if (registry[key]) return registry[key];
-			return (registry[key] = SymbolPolyfill(String(key)));
-		}),
-		keyFor: d(function (symbol) {
-			var key;
-			validateSymbol(symbol);
-			for (key in registry) {
-				if (registry[key] === symbol) return key;
-			}
-			return undefined;
-		})
-	});
-};