{"action":"closed","issue":{"url":"https://api.github.com/repos/gruntjs/grunt-contrib-uglify/issues/303","repository_url":"https://api.github.com/repos/gruntjs/grunt-contrib-uglify","labels_url":"https://api.github.com/repos/gruntjs/grunt-contrib-uglify/issues/303/labels{/name}","comments_url":"https://api.github.com/repos/gruntjs/grunt-contrib-uglify/issues/303/comments","events_url":"https://api.github.com/repos/gruntjs/grunt-contrib-uglify/issues/303/events","html_url":"https://github.com/gruntjs/grunt-contrib-uglify/issues/303","id":59326462,"number":303,"title":"screwIE8 Option Causes Grunt to Abort","user":{"login":"grempe","id":117,"avatar_url":"https://avatars.githubusercontent.com/u/117?v=3","gravatar_id":"","url":"https://api.github.com/users/grempe","html_url":"https://github.com/grempe","followers_url":"https://api.github.com/users/grempe/followers","following_url":"https://api.github.com/users/grempe/following{/other_user}","gists_url":"https://api.github.com/users/grempe/gists{/gist_id}","starred_url":"https://api.github.com/users/grempe/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/grempe/subscriptions","organizations_url":"https://api.github.com/users/grempe/orgs","repos_url":"https://api.github.com/users/grempe/repos","events_url":"https://api.github.com/users/grempe/events{/privacy}","received_events_url":"https://api.github.com/users/grempe/received_events","type":"User","site_admin":false},"labels":[],"state":"closed","locked":false,"assignee":null,"milestone":null,"comments":7,"created_at":"2015-02-28T05:22:44Z","updated_at":"2016-02-02T15:51:28Z","closed_at":"2016-02-02T15:51:28Z","body":"If I add the 'screwIE8: true' option I get the following error. When it is removed grunt runs fine.\r\n\r\n````\r\n$ grunt\r\nRunning \"uglify:build\" (uglify) task\r\nWarning: Cannot assign to read only property 'screw_ie8' of true Use --force to continue.\r\n\r\nAborted due to warnings.\r\n````\r\n\r\nVersion installed: grunt-contrib-uglify@0.8.0"}}