From 658a2bd3cd4c32cfa0d2ea1aa89ff6e71c5eef07 Mon Sep 17 00:00:00 2001
From: Rene Pfeuffer <rene.pfeuffer@cloudogu.com>
Date: Wed, 8 Jan 2020 14:07:50 +0100
Subject: [PATCH 1/2] Remove empty object from parameter list

---
 scm-ui/ui-components/src/repos/Diff.stories.tsx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scm-ui/ui-components/src/repos/Diff.stories.tsx b/scm-ui/ui-components/src/repos/Diff.stories.tsx
index 09ef48c0b5..8e5260bcc5 100644
--- a/scm-ui/ui-components/src/repos/Diff.stories.tsx
+++ b/scm-ui/ui-components/src/repos/Diff.stories.tsx
@@ -33,7 +33,7 @@ storiesOf("Diff", module)
     />
   ))
   .add("OnClick", () => {
-    const OnClickDemo = ({}) => {
+    const OnClickDemo = () => {
       const [changeId, setChangeId] = useState();
       useEffect(() => {
         const interval = setInterval(() => setChangeId(undefined), 2000);

From 67777ff52d8bd7e2e599812daf25e5e96f2b6d57 Mon Sep 17 00:00:00 2001
From: Rene Pfeuffer <rene.pfeuffer@cloudogu.com>
Date: Wed, 8 Jan 2020 16:42:07 +0100
Subject: [PATCH 2/2] Fix reduce error with empty diff

---
 scm-ui/ui-components/src/repos/DiffFile.tsx | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/scm-ui/ui-components/src/repos/DiffFile.tsx b/scm-ui/ui-components/src/repos/DiffFile.tsx
index fe35cc111f..942d789f99 100644
--- a/scm-ui/ui-components/src/repos/DiffFile.tsx
+++ b/scm-ui/ui-components/src/repos/DiffFile.tsx
@@ -222,6 +222,14 @@ class DiffFile extends React.Component<Props, State> {
     return <ChangeTypeTag className={classNames("is-rounded", "has-text-weight-normal")} color={color} label={value} />;
   };
 
+  concat = (array: object[][]) => {
+    if (array.length > 0) {
+      return array.reduce((a, b) => a.concat(b));
+    } else {
+      return [];
+    }
+  };
+
   render() {
     const { file, fileControlFactory, fileAnnotationFactory, t } = this.props;
     const { collapsed, sideBySide } = this.state;
@@ -236,7 +244,7 @@ class DiffFile extends React.Component<Props, State> {
         <div className="panel-block is-paddingless">
           {fileAnnotations}
           <ModifiedDiffComponent className={viewType} viewType={viewType} hunks={file.hunks} diffType={file.type}>
-            {(hunks: HunkType[]) => hunks.map(this.renderHunk).reduce((a, b) => a.concat(b))}
+            {(hunks: HunkType[]) => this.concat(hunks.map(this.renderHunk))}
           </ModifiedDiffComponent>
         </div>
       );