1 files changed, 9 insertions, 0 deletions
diff --git a/app/assets/javascripts/image_diff/view_types.js b/app/assets/javascripts/image_diff/view_types.js
new file mode 100644
index 00000000000..ab0a595571f
--- /dev/null
+++ b/app/assets/javascripts/image_diff/view_types.js
@@ -0,0 +1,9 @@
+export const viewTypes = {
+  TWO_UP: 'TWO_UP',
+  SWIPE: 'SWIPE',
+  ONION_SKIN: 'ONION_SKIN',
+};
+
+export function isValidViewType(validate) {
+  return !!Object.getOwnPropertyNames(viewTypes).find(viewType => viewType === validate);
+}