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Fix IE 10 and IE 11's broken `preventDefault` 

https://github.com/turbolinks/turbolinks/issues/233
https://stackoverflow.com/questions/23349191/event-preventdefault-is-not-working-in-ie-11-for-custom-events
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Yuri S 2017-12-27 18:39:44 +05:00 committed by GitHub
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commit 049a3374aa
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5
actionview/app/assets/javascripts/rails-ujs/utils/event.coffee
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@ -10,6 +10,11 @@ if typeof CustomEvent isnt 'function'
CustomEvent = (event, params) ->
evt = document.createEvent('CustomEvent')
evt.initCustomEvent(event, params.bubbles, params.cancelable, params.detail)
# IE does not set `defaultPrevented` when `preventDefault()` is called on CustomEvents
# http://stackoverflow.com/questions/23349191/event-preventdefault-is-not-working-in-ie-11-for-custom-events
evt.preventDefault = ->
Object.defineProperty this, 'defaultPrevented', get: ->
true
evt
CustomEvent.prototype = window.Event.prototype