рефакторинг

src/index.js

@@ -1,47 +1,36 @@
-var bowser = require('bowser/bowser'),
-    browserInfo = bowser._detect(navigator.userAgent),
-    global = Function('return this')(),
-    canPromise = Boolean(global.Promise),
-    canAsync,
-    cadesplugin,
-    cryptoService,
-    _errorMsg = '',
-    _isLoaded = false,
-    _onLoadCbQueue = [];
-
-global.allow_firefox_cadesplugin_async = browserInfo.firefox && browserInfo.version >= 52;
-
 require('../vendor/cadesplugin_api');
 
-cadesplugin = global.cadesplugin;
+var global = Function('return this')(),
+    canPromise = Boolean(global.Promise),
+    cadesplugin = global.cadesplugin,
+    cryptoService = require('./api'),
+    errorMsg = '',
+    loadedPlugin = false,
+    onLoadCallbacs = [],
 
-canAsync = Boolean(cadesplugin.CreateObjectAsync);
-
-cryptoService = require('./api');
-
-function execOnloadQueue() {
-    _onLoadCbQueue.forEach(function (callback) {
+    execOnloadQueue = function execOnloadQueue() {
+        onLoadCallbacs.forEach(function (callback) {
             callback();
         });
-}
+    },
 
-function passToWaitOnLoad(callback) {
+    passToWaitOnLoad = function passToWaitOnLoad(callback) {
         if (Object.prototype.toString.call(callback) === '[object Function]') {
-        _onLoadCbQueue.push(callback);
-    }
+            onLoadCallbacs.push(callback);
         }
+    },
 
-function callOnLoad(method) {
-    _isLoaded ? method() : passToWaitOnLoad(method);
-}
+    callOnLoad = function callOnLoad(method) {
+        loadedPlugin ? method() : passToWaitOnLoad(method);
+    },
 
-function finishLoading() {
-    _isLoaded = true;
+    finishLoading = function finishLoading() {
+        loadedPlugin = true;
 
         execOnloadQueue();
-}
+    },
 
-function call() {
+    call = function call() {
         var args = Array.prototype.slice.call(arguments),
             methodName = args.shift();
 
@@ -49,8 +38,8 @@ function call() {
             callOnLoad(function () {
                 var method;
 
-            if (_errorMsg) {
-                reject(_errorMsg);
+                if (errorMsg) {
+                    reject(errorMsg);
                     return;
                 }
 
@@ -64,7 +53,7 @@ function call() {
                 method.apply(null, args).then(resolve, reject);
             });
         });
-}
+    };
 
 if (cadesplugin) {
     // Уровень отладки (LOG_LEVEL_DEBUG, LOG_LEVEL_INFO, LOG_LEVEL_ERROR)
@@ -72,7 +61,7 @@ if (cadesplugin) {
 
     if (canPromise) {
         cadesplugin.then(finishLoading, function () {
-            _errorMsg = 'КриптоПРО ЭЦП Browser Plug-In не доступен';
+            errorMsg = 'КриптоПРО ЭЦП Browser Plug-In не доступен';
             finishLoading();
         });
     } else {