1 files changed, 19 insertions, 0 deletions
diff --git a/app/assets/javascripts/helpers/diffs_helper.js b/app/assets/javascripts/helpers/diffs_helper.js
new file mode 100644
index 00000000000..9695d01ad3d
--- /dev/null
+++ b/app/assets/javascripts/helpers/diffs_helper.js
@@ -0,0 +1,19 @@
+export function hasInlineLines(diffFile) {
+  return diffFile?.highlighted_diff_lines?.length > 0; /* eslint-disable-line camelcase */
+}
+
+export function hasParallelLines(diffFile) {
+  return diffFile?.parallel_diff_lines?.length > 0; /* eslint-disable-line camelcase */
+}
+
+export function isSingleViewStyle(diffFile) {
+  return !hasParallelLines(diffFile) || !hasInlineLines(diffFile);
+}
+
+export function hasDiff(diffFile) {
+  return (
+    hasInlineLines(diffFile) ||
+    hasParallelLines(diffFile) ||
+    !diffFile?.blob?.readable_text /* eslint-disable-line camelcase */
+  );
+}