Garbage collect segments.

src/utils/basic.ts

@@ -94,4 +94,20 @@ export const isHoverableDevice = (): boolean => window.matchMedia(
  */
 export const formatDateAndTime = (date: Date): string => {
   return format(date, 'yyyy-MM-dd HH:mm');
+}
+
+/**
+ * Run a function in idle periods. If idle callbacks are not supported (e.g.
+ * Safari) the callback is run immediately.
+ * @param func The function to call.
+ * @param timeout The maximum number of seconds to wait.
+ */
+export const runWhenIdleIfSupported = (func: () => void, timeout?: number): void => {
+  if (window.requestIdleCallback) {
+    window.requestIdleCallback(func, {
+      ...(timeout && { timeout: timeout})
+    });
+  } else {
+    func();
+  }
 }