1 files changed, 23 insertions, 0 deletions
diff --git a/app/assets/javascripts/lib/utils/is_navigating_away.js b/app/assets/javascripts/lib/utils/is_navigating_away.js
new file mode 100644
index 00000000000..7df00b45379
--- /dev/null
+++ b/app/assets/javascripts/lib/utils/is_navigating_away.js
@@ -0,0 +1,23 @@
+let navigating = false;
+
+window.addEventListener('beforeunload', () => {
+  navigating = true;
+});
+
+/**
+ * To only be used for testing purposes. Allows the navigating state to be set
+ * to a given value.
+ *
+ * @param {boolean} value The value to set the navigating flag to.
+ */
+export const setNavigatingForTestsOnly = (value) => {
+  navigating = value;
+};
+
+/**
+ * Returns a boolean indicating whether the browser is in the process of
+ * navigating away from the current page.
+ *
+ * @returns {boolean}
+ */
+export const isNavigatingAway = () => navigating;