Check existence of variable method

This happens because tab's `shown` event is triggered first if we enter directly to the diff page therefore Breakpoints class is not initialized yet.

Check existence of variable method
fe0aa823 · Alfredo Sumaran · Jacob Schatz · a7c11fe4 · fe0aa823
Commit fe0aa823 authored Apr 05, 2016 by Alfredo Sumaran Committed by Jacob Schatz Apr 10, 2016
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merge_request_tabs.js.coffee app/assets/javascripts/merge_request_tabs.js.coffee +1 -1

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--- a/app/assets/javascripts/merge_request_tabs.js.coffee
+++ b/app/assets/javascripts/merge_request_tabs.js.coffee
@@ -73,7 +73,7 @@ class @MergeRequestTabs
      @expandView()
    else if action == 'diffs'
      @loadDiff($target.attr('href'))
-      if bp.getBreakpointSize() isnt 'lg'
+      if window.bp isnt undefined and window.bp.getBreakpointSize() isnt 'lg'
        @shrinkView()
    else if action == 'builds'
      @loadBuilds($target.attr('href'))