{"action":"opened","issue":{"url":"https://api.github.com/repos/meteor/meteor/issues/5965","labels_url":"https://api.github.com/repos/meteor/meteor/issues/5965/labels{/name}","comments_url":"https://api.github.com/repos/meteor/meteor/issues/5965/comments","events_url":"https://api.github.com/repos/meteor/meteor/issues/5965/events","html_url":"https://github.com/meteor/meteor/issues/5965","id":125835214,"number":5965,"title":"[check package] Constructor property in an object","user":{"login":"jagi","id":1051229,"avatar_url":"https://avatars.githubusercontent.com/u/1051229?v=3","gravatar_id":"","url":"https://api.github.com/users/jagi","html_url":"https://github.com/jagi","followers_url":"https://api.github.com/users/jagi/followers","following_url":"https://api.github.com/users/jagi/following{/other_user}","gists_url":"https://api.github.com/users/jagi/gists{/gist_id}","starred_url":"https://api.github.com/users/jagi/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/jagi/subscriptions","organizations_url":"https://api.github.com/users/jagi/orgs","repos_url":"https://api.github.com/users/jagi/repos","events_url":"https://api.github.com/users/jagi/events{/privacy}","received_events_url":"https://api.github.com/users/jagi/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2016-01-10T18:07:50Z","updated_at":"2016-01-10T18:07:50Z","closed_at":null,"body":"Hi, there is probably a bug in the Match.test function when checking the `\"constructor\"` property value. The following code will return false:\r\n\r\n```js\r\nvar o = {\r\n  constructor: 'abc'\r\n};\r\nMatch.test(o, {constructor: String}); // Returns false\r\n```\r\n\r\nwhich of course is wrong."}}