1 files changed, 46 insertions, 27 deletions
diff --git a/actioncable/app/javascript/action_cable/index.js.erb b/actioncable/app/javascript/action_cable/index.js.erb
index e0758dae72..a5fb5b4556 100644
--- a/actioncable/app/javascript/action_cable/index.js.erb
+++ b/actioncable/app/javascript/action_cable/index.js.erb
@@ -1,38 +1,57 @@
-#= export ActionCable
-#= require_self
-#= require ./action_cable/consumer
+/*
+ * decaffeinate suggestions:
+ * DS101: Remove unnecessary use of Array.from
+ * DS102: Remove unnecessary code created because of implicit returns
+ * DS104: Avoid inline assignments
+ * DS207: Consider shorter variations of null checks
+ * DS208: Avoid top-level this
+ * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
+ */
+//= export ActionCable
+//= require_self
+//= require ./action_cable/consumer
 
-@ActionCable =
-  INTERNAL: <%= ActionCable::INTERNAL.to_json %>
-  WebSocket: window.WebSocket
-  logger: window.console
+this.ActionCable = {
+  INTERNAL: <%= ActionCable::INTERNAL.to_json %>,
+  WebSocket: window.WebSocket,
+  logger: window.console,
 
-  createConsumer: (url) ->
-    url ?= @getConfig("url") ? @INTERNAL.default_mount_path
-    new ActionCable.Consumer @createWebSocketURL(url)
+  createConsumer(url) {
+    if (url == null) { let left
+    url = (left = this.getConfig("url")) != null ? left : this.INTERNAL.default_mount_path }
+    return new ActionCable.Consumer(this.createWebSocketURL(url))
+  },
 
-  getConfig: (name) ->
-    element = document.head.querySelector("meta[name='action-cable-#{name}']")
-    element?.getAttribute("content")
+  getConfig(name) {
+    const element = document.head.querySelector(`meta[name='action-cable-${name}']`)
+    return (element != null ? element.getAttribute("content") : undefined)
+  },
 
-  createWebSocketURL: (url) ->
-    if url and not /^wss?:/i.test(url)
-      a = document.createElement("a")
+  createWebSocketURL(url) {
+    if (url && !/^wss?:/i.test(url)) {
+      const a = document.createElement("a")
       a.href = url
-      # Fix populating Location properties in IE. Otherwise, protocol will be blank.
+      // Fix populating Location properties in IE. Otherwise, protocol will be blank.
       a.href = a.href
       a.protocol = a.protocol.replace("http", "ws")
-      a.href
-    else
-      url
+      return a.href
+    } else {
+      return url
+    }
+  },
 
-  startDebugging: ->
-    @debugging = true
+  startDebugging() {
+    return this.debugging = true
+  },
 
-  stopDebugging: ->
-    @debugging = null
+  stopDebugging() {
+    return this.debugging = null
+  },
 
-  log: (messages...) ->
-    if @debugging
+  log(...messages) {
+    if (this.debugging) {
       messages.push(Date.now())
-      @logger.log("[ActionCable]", messages...)
+      return this.logger.log("[ActionCable]", ...Array.from(messages))
+    }
+  }
+}