From 5f5e77afd503e9c2a342425ea533cc23f0ca1731 Mon Sep 17 00:00:00 2001
From: evykassirer <evy@zulip.com>
Date: Sun, 24 Dec 2023 19:07:52 -0800
Subject: [PATCH] local_message: Convert module to typescript.

---
 tools/test-js-with-node                        | 2 +-
 web/src/{local_message.js => local_message.ts} | 9 +++------
 web/src/page_params.ts                         | 1 +
 3 files changed, 5 insertions(+), 7 deletions(-)
 rename web/src/{local_message.js => local_message.ts} (84%)

diff --git a/tools/test-js-with-node b/tools/test-js-with-node
index 45fcc83634..b2f769dce5 100755
--- a/tools/test-js-with-node
+++ b/tools/test-js-with-node
@@ -123,7 +123,7 @@ EXEMPT_FILES = make_set(
         "web/src/list_util.ts",
         "web/src/list_widget.ts",
         "web/src/loading.ts",
-        "web/src/local_message.js",
+        "web/src/local_message.ts",
         "web/src/localstorage.ts",
         "web/src/message_actions_popover.js",
         "web/src/message_edit.js",
diff --git a/web/src/local_message.js b/web/src/local_message.ts
similarity index 84%
rename from web/src/local_message.js
rename to web/src/local_message.ts
index 9bd2e6977e..ccd060f7bf 100644
--- a/web/src/local_message.js
+++ b/web/src/local_message.ts
@@ -2,19 +2,16 @@ import {all_messages_data} from "./all_messages_data";
 import * as blueslip from "./blueslip";
 import {page_params} from "./page_params";
 
-function truncate_precision(float) {
+function truncate_precision(float: number): number {
     return Number.parseFloat(float.toFixed(3));
 }
 
 export const get_next_id_float = (function () {
     const already_used = new Set();
 
-    return function () {
+    return function (): number | undefined {
         const local_id_increment = 0.01;
-        let latest = page_params.max_message_id;
-        if (all_messages_data.last() !== undefined) {
-            latest = all_messages_data.last().id;
-        }
+        let latest = all_messages_data.last()?.id ?? page_params.max_message_id;
         latest = Math.max(0, latest);
         const local_id_float = truncate_precision(latest + local_id_increment);
 
diff --git a/web/src/page_params.ts b/web/src/page_params.ts
index 068ff2c43f..e6f9df567f 100644
--- a/web/src/page_params.ts
+++ b/web/src/page_params.ts
@@ -41,6 +41,7 @@ export const page_params: {
     max_avatar_file_size_mib: number;
     max_icon_file_size_mib: number;
     max_logo_file_size_mib: number;
+    max_message_id: number;
     muted_users: {id: number; timestamp: number}[];
     narrow_stream?: string;
     narrow: Term[];