Use singular “update” when the digest has one item so FCM and SMS bodies stay grammatical.

src/alertSearch/notify.ts

@@ -29,7 +29,8 @@ export type AlertSearchNotifyResult = {
 };
 
 export function alertSearchNotificationBody(totalCount: number): string {
-  return `You have ${totalCount} new updates.`;
+  const noun = totalCount === 1 ? "update" : "updates";
+  return `You have ${totalCount} new ${noun}.`;
 }
 
 export function buildAlertSearchNotificationContent(

src/alertSearch/smsNotify.ts

@@ -46,8 +46,9 @@ export type AlertSearchSmsNotifyResult = {
 };
 
 export function alertSearchSmsBody(totalCount: number): string {
+  const noun = totalCount === 1 ? "update" : "updates";
   return (
-    `Gift Economies: you have ${totalCount} new updates. ` +
+    `Gift Economies: you have ${totalCount} new ${noun}. ` +
     `${ALERT_SEARCH_SMS_LINK} Reply STOP to end.`
   );
 }

test/alertSearch/notify.test.ts

@@ -151,7 +151,7 @@ describe("alertSearch notification gate", () => {
     assert.equal(content.type, ALERT_SEARCH_FCM_TYPE);
     assert.equal(content.body.includes(USER), false);
     assert.equal(content.body.includes("01H"), false);
-    assert.equal(alertSearchNotificationBody(1), "You have 1 new updates.");
+    assert.equal(alertSearchNotificationBody(1), "You have 1 new update.");
   });
 });
 

test/alertSearch/smsNotify.test.ts

@@ -124,6 +124,10 @@ describe("alertSearchSmsBody", () => {
     assert.ok(
       alertSearchSmsBody(999999).length <= SMS_SINGLE_SEGMENT_LIMIT
     );
+    assert.equal(
+      alertSearchSmsBody(1),
+      `Gift Economies: you have 1 new update. ${ALERT_SEARCH_SMS_LINK} Reply STOP to end.`
+    );
     assert.equal(body.includes("giftopia.tech"), false);
   });
 });