From db53fa774003cc013078992d8b71384acd02ce77 Mon Sep 17 00:00:00 2001
From: Meriam Lachkar <meriam.lachkar@gmail.com>
Date: Mon, 12 Oct 2020 12:59:23 +0200
Subject: [PATCH] add Xfatal-warnings to docs project

---
 build.sbt                                                  | 3 ++-
 scalafix-docs/src/main/scala/docs/website.scala            | 6 ++++--
 scalafix-docs/src/main/scala/scalafix/docs/PatchDocs.scala | 2 +-
 3 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/build.sbt b/build.sbt
index 95d8089e7..7afdb184b 100644
--- a/build.sbt
+++ b/build.sbt
@@ -283,7 +283,8 @@ lazy val docs = project
     skip in publish := true,
     moduleName := "scalafix-docs",
     scalaVersion := scala213,
-    scalacOptions += "-Wconf:msg='match may not be exhaustive':ws", // silence exhaustive pattern matching warning for documentation
+    scalacOptions += "-Wconf:msg='match may not be exhaustive':s", // silence exhaustive pattern matching warning for documentation
+    scalacOptions += "-Xfatal-warnings",
     mdoc := run.in(Compile).evaluated,
     crossScalaVersions := List(scala213),
     libraryDependencies ++= List(
diff --git a/scalafix-docs/src/main/scala/docs/website.scala b/scalafix-docs/src/main/scala/docs/website.scala
index 0af487124..cecc8ed98 100644
--- a/scalafix-docs/src/main/scala/docs/website.scala
+++ b/scalafix-docs/src/main/scala/docs/website.scala
@@ -84,14 +84,16 @@ package object website {
       default: T
   )(implicit settings: Settings[T], ev: T <:< Product): List[(Setting, Any)] = {
     settings.settings
-      .zip(default.productIterator.toIterable)
+      .zip(default.productIterator.iterator.to(Iterable))
       .filterNot { case (setting, _) => setting.isHidden }
       .flatMap {
         case (s, d: SimpleDefinitions) =>
           (s, d.kinds.mkString("['", "', '", "']")) :: Nil
         case (deepSetting, defaultSetting: Product)
             if deepSetting.underlying.nonEmpty =>
-          deepSetting.flat.zip(defaultSetting.productIterator.toIterable)
+          deepSetting.flat.zip(
+            defaultSetting.productIterator.iterator.to(Iterable)
+          )
         case (s, lst: Iterable[_]) =>
           val rendered = lst.map(render)
           val string =
diff --git a/scalafix-docs/src/main/scala/scalafix/docs/PatchDocs.scala b/scalafix-docs/src/main/scala/scalafix/docs/PatchDocs.scala
index 99f9bd640..93affa7b6 100644
--- a/scalafix-docs/src/main/scala/scalafix/docs/PatchDocs.scala
+++ b/scalafix-docs/src/main/scala/scalafix/docs/PatchDocs.scala
@@ -28,7 +28,7 @@ object PatchDocs {
           doc
             .nested(ctx.indentCount * ctx.indentStep)
             .renderStream(ctx.leftOffset)
-            .toIterator
+            .iterator
         }
       x match {
         case t: SemanticTree =>