Don’t throw when the `CSS` global is not defined

6 years ago · 1bc20dbc0d
parent 4edbe9b597
commit 1bc20dbc0d
1 changed files with 1 additions and 1 deletions
--- a/assets/javascripts/app/app.coffee
+++ b/assets/javascripts/app/app.coffee
@ -252,7 +252,7 @@
        matchMedia:         !!window.matchMedia
        insertAdjacentHTML: !!document.body.insertAdjacentHTML
        defaultPrevented:     document.createEvent('CustomEvent').defaultPrevented is false
-        cssVariables:         CSS.supports and CSS.supports('(--t: 0)')
+        cssVariables:       !!CSS?.supports?('(--t: 0)')

      for key, value of features when not value
        Raven.captureMessage "unsupported/#{key}", level: 'info'