{"action":"created","comment":{"url":"https://api.github.com/repos/scala-js/scala-js/pulls/comments/35681777","id":35681777,"diff_hunk":"@@ -0,0 +1,65 @@\n+/*                     __                                               *\\\n+**     ________ ___   / /  ___      __ ____  Scala.js API               **\n+**    / __/ __// _ | / /  / _ | __ / // __/  (c) 2013-2015, LAMP/EPFL   **\n+**  __\\ \\/ /__/ __ |/ /__/ __ |/_// /_\\ \\    http://scala-lang.org/     **\n+** /____/\\___/_/ |_/____/_/ | |__/ /____/                               **\n+**                          |/____/                                     **\n+\\*                                                                      */\n+\n+\n+package scala.scalajs.js\n+\n+import scala.language.implicitConversions\n+\n+/** Value of type A or B (union type).\n+ *\n+ *  Scala does not have union types, but they are important to many\n+ *  interoperability scenarios. This type provides a (partial) encoding of\n+ *  union types using implicit evidences.\n+ */\n+@scala.scalajs.js.annotation.RawJSType // Don't do this at home!\n+sealed trait |[A, B] // scalastyle:ignore\n+\n+object | { // scalastyle:ignore\n+  /** Evidence that `A <: B`, taking top-level `|`-types into account. */\n+  sealed trait Evidence[-A, +B]\n+\n+  /** A unique (and typically dead-code-eliminated away) instance of\n+   *  `Evidence`.\n+   */\n+  private object ReusableEvidence extends Evidence[scala.Any, scala.Any]\n+\n+  abstract sealed class EvidenceLowestPrioImplicits {\n+    /** If `A <: B2`, then `A <: B1 | B2`. */\n+    implicit def right[A, B1, B2](implicit ev: Evidence[A, B2]): Evidence[A, B1 | B2] =\n+      ReusableEvidence.asInstanceOf[Evidence[A, B1 | B2]]\n+  }\n+\n+  abstract sealed class EvidenceLowPrioImplicits extends EvidenceLowestPrioImplicits {\n+    /** `Int <: Double`, because that's true in Scala.js. */\n+    implicit def intDouble: Evidence[Int, Double] =\n+      ReusableEvidence.asInstanceOf[Evidence[Int, Double]]","path":"library/src/main/scala/scala/scalajs/js/Union.scala","position":41,"original_position":41,"commit_id":"438b014d6f789ced9ad3dae840798c4422f222b2","original_commit_id":"438b014d6f789ced9ad3dae840798c4422f222b2","user":{"login":"gzm0","id":1140323,"avatar_url":"https://avatars.githubusercontent.com/u/1140323?v=3","gravatar_id":"","url":"https://api.github.com/users/gzm0","html_url":"https://github.com/gzm0","followers_url":"https://api.github.com/users/gzm0/followers","following_url":"https://api.github.com/users/gzm0/following{/other_user}","gists_url":"https://api.github.com/users/gzm0/gists{/gist_id}","starred_url":"https://api.github.com/users/gzm0/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/gzm0/subscriptions","organizations_url":"https://api.github.com/users/gzm0/orgs","repos_url":"https://api.github.com/users/gzm0/repos","events_url":"https://api.github.com/users/gzm0/events{/privacy}","received_events_url":"https://api.github.com/users/gzm0/received_events","type":"User","site_admin":false},"body":"Yeah. That sounds good. Let's keep it this way and we'll add stuff as we go if needed.","created_at":"2015-07-28T18:23:20Z","updated_at":"2015-07-28T18:23:20Z","html_url":"https://github.com/scala-js/scala-js/pull/1826#discussion_r35681777","pull_request_url":"https://api.github.com/repos/scala-js/scala-js/pulls/1826","_links":{"self":{"href":"https://api.github.com/repos/scala-js/scala-js/pulls/comments/35681777"},"html":{"href":"https://github.com/scala-js/scala-js/pull/1826#discussion_r35681777"},"pull_request":{"href":"https://api.github.com/repos/scala-js/scala-js/pulls/1826"}}},"pull_request":{"url":"https://api.github.com/repos/scala-js/scala-js/pulls/1826","id":40989759,"html_url":"https://github.com/scala-js/scala-js/pull/1826","diff_url":"https://github.com/scala-js/scala-js/pull/1826.diff","patch_url":"https://github.com/scala-js/scala-js/pull/1826.patch","issue_url":"https://api.github.com/repos/scala-js/scala-js/issues/1826","number":1826,"state":"open","locked":false,"title":"Fix #1824: Add a union type `js.|[A, B]`, aka `A | B`.","user":{"login":"sjrd","id":535934,"avatar_url":"https://avatars.githubusercontent.com/u/535934?v=3","gravatar_id":"","url":"https://api.github.com/users/sjrd","html_url":"https://github.com/sjrd","followers_url":"https://api.github.com/users/sjrd/followers","following_url":"https://api.github.com/users/sjrd/following{/other_user}","gists_url":"https://api.github.com/users/sjrd/gists{/gist_id}","starred_url":"https://api.github.com/users/sjrd/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/sjrd/subscriptions","organizations_url":"https://api.github.com/users/sjrd/orgs","repos_url":"https://api.github.com/users/sjrd/repos","events_url":"https://api.github.com/users/sjrd/events{/privacy}","received_events_url":"https://api.github.com/users/sjrd/received_events","type":"User","site_admin":false},"body":"This is an unboxed union type, which is represent a value of type either A or B.","created_at":"2015-07-28T09:08:59Z","updated_at":"2015-07-28T18:23:20Z","closed_at":null,"merged_at":null,"merge_commit_sha":"ead44054e6a22a472e0e6d08a32406ac298db7ce","assignee":{"login":"gzm0","id":1140323,"avatar_url":"https://avatars.githubusercontent.com/u/1140323?v=3","gravatar_id":"","url":"https://api.github.com/users/gzm0","html_url":"https://github.com/gzm0","followers_url":"https://api.github.com/users/gzm0/followers","following_url":"https://api.github.com/users/gzm0/following{/other_user}","gists_url":"https://api.github.com/users/gzm0/gists{/gist_id}","starred_url":"https://api.github.com/users/gzm0/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/gzm0/subscriptions","organizations_url":"https://api.github.com/users/gzm0/orgs","repos_url":"https://api.github.com/users/gzm0/repos","events_url":"https://api.github.com/users/gzm0/events{/privacy}","received_events_url":"https://api.github.com/users/gzm0/received_events","type":"User","site_admin":false},"milestone":null,"commits_url":"https://api.github.com/repos/scala-js/scala-js/pulls/1826/commits","review_comments_url":"https://api.github.com/repos/scala-js/scala-js/pulls/1826/comments","review_comment_url":"https://api.github.com/repos/scala-js/scala-js/pulls/comments{/number}","comments_url":"https://api.github.com/repos/scala-js/scala-js/issues/1826/comments","statuses_url":"https://api.github.com/repos/scala-js/scala-js/statuses/438b014d6f789ced9ad3dae840798c4422f222b2","head":{"label":"sjrd:union-type","ref":"union-type","sha":"438b014d6f789ced9ad3dae840798c4422f222b2","user":{"login":"sjrd","id":535934,"avatar_url":"https://avatars.githubusercontent.com/u/535934?v=3","gravatar_id":"","url":"https://api.github.com/users/sjrd","html_url":"https://github.com/sjrd","followers_url":"https://api.github.com/users/sjrd/followers","following_url":"https://api.github.com/users/sjrd/following{/other_user}","gists_url":"https://api.github.com/users/sjrd/gists{/gist_id}","starred_url":"https://api.github.com/users/sjrd/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/sjrd/subscriptions","organizations_url":"https://api.github.com/users/sjrd/orgs","repos_url":"https://api.github.com/users/sjrd/repos","events_url":"https://api.github.com/users/sjrd/events{/privacy}","received_events_url":"https://api.github.com/users/sjrd/received_events","type":"User","site_admin":false},"repo":{"id":8660284,"name":"scala-js","full_name":"sjrd/scala-js","owner":{"login":"sjrd","id":535934,"avatar_url":"https://avatars.githubusercontent.com/u/535934?v=3","gravatar_id":"","url":"https://api.github.com/users/sjrd","html_url":"https://github.com/sjrd","followers_url":"https://api.github.com/users/sjrd/followers","following_url":"https://api.github.com/users/sjrd/following{/other_user}","gists_url":"https://api.github.com/users/sjrd/gists{/gist_id}","starred_url":"https://api.github.com/users/sjrd/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/sjrd/subscriptions","organizations_url":"https://api.github.com/users/sjrd/orgs","repos_url":"https://api.github.com/users/sjrd/repos","events_url":"https://api.github.com/users/sjrd/events{/privacy}","received_events_url":"https://api.github.com/users/sjrd/received_events","type":"User","site_admin":false},"private":false,"html_url":"https://github.com/sjrd/scala-js","description":"Scala.js, 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