Mixed up names: {contra ⇒ co}variance

Author: japgolly

core/src/main/scala/japgolly/scalajs/react/Callback.scala

@@ -282,7 +282,7 @@ object CallbackTo {
       c.toFuture.flatMap(identity)
   }
 
-  implicit def callbackContravariance[A, B >: A](c: CallbackTo[A]): CallbackTo[B] =
+  implicit def callbackCovariance[A, B >: A](c: CallbackTo[A]): CallbackTo[B] =
     c.widen
 
   /**

core/src/main/scala/japgolly/scalajs/react/CallbackOption.scala

@@ -144,7 +144,7 @@ object CallbackOption {
       _ <- e.preventDefaultCB.toCBO
     } yield a
 
-  implicit def callbackOptionContravariance[A, B >: A](c: CallbackOption[A]): CallbackOption[B] =
+  implicit def callbackOptionCovariance[A, B >: A](c: CallbackOption[A]): CallbackOption[B] =
     c.widen
 }
 

doc/changelog/0.11.0.md

@@ -37,7 +37,7 @@
 * Upgrade Scala.JS to 0.6.8.
 * Add to `Callback{,To}`: `.attemptTry` which catches non-fatal errors using a Scala `Try`.
 * Mounted components gain `.outerHtmlWithoutReactDataAttr()` after importing `...react.test._`.
-* `Callback{,To,Option}` are now contravariant by (zero-cost) implicit conversion.
+* `Callback{,To,Option}` are now covariant by (zero-cost) implicit conversion.
 * The following `Callback` methods have been changed to prevent `scalac` silent throwing away your results in certain
   scenarios (eg. accidentally use `.map` to another `Callback` instead of using `.flatMap`).
   This is a problem with Scala and `Unit` - you can experience the same with `scala.concurrent.Future` too, but at least