{"action":"closed","issue":{"url":"https://api.github.com/repos/scala-js/scala-js/issues/1447","labels_url":"https://api.github.com/repos/scala-js/scala-js/issues/1447/labels{/name}","comments_url":"https://api.github.com/repos/scala-js/scala-js/issues/1447/comments","events_url":"https://api.github.com/repos/scala-js/scala-js/issues/1447/events","html_url":"https://github.com/scala-js/scala-js/issues/1447","id":54043284,"number":1447,"title":"Native indexOf() for js.Array","user":{"login":"tindzk","id":196819,"avatar_url":"https://avatars.githubusercontent.com/u/196819?v=3","gravatar_id":"","url":"https://api.github.com/users/tindzk","html_url":"https://github.com/tindzk","followers_url":"https://api.github.com/users/tindzk/followers","following_url":"https://api.github.com/users/tindzk/following{/other_user}","gists_url":"https://api.github.com/users/tindzk/gists{/gist_id}","starred_url":"https://api.github.com/users/tindzk/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/tindzk/subscriptions","organizations_url":"https://api.github.com/users/tindzk/orgs","repos_url":"https://api.github.com/users/tindzk/repos","events_url":"https://api.github.com/users/tindzk/events{/privacy}","received_events_url":"https://api.github.com/users/tindzk/received_events","type":"User","site_admin":false},"labels":[],"state":"closed","locked":false,"assignee":null,"milestone":null,"comments":1,"created_at":"2015-01-12T11:26:13Z","updated_at":"2015-01-12T12:12:37Z","closed_at":"2015-01-12T12:12:37Z","body":"``indexOf()`` is implemented in ``js.Array`` using an implicit although JavaScript already provides an implementation out of the box. If I understand correctly, implicits incur a run-time overhead when used on native JavaScript collection types."}}