starred_messages: Use standard initialization patterns.

We aim to only call .initialize methods from ui_init.js, and prefer to
pop fields off page_params there and pass them into modules.

web/src/starred_messages.js

@@ -1,12 +1,11 @@
 import * as message_store from "./message_store";
-import {page_params} from "./page_params";
 
 export const starred_ids = new Set();
 
-export function initialize() {
+export function initialize(starred_messages_params) {
     starred_ids.clear();
 
-    for (const id of page_params.starred_messages) {
+    for (const id of starred_messages_params.starred_messages) {
         starred_ids.add(id);
     }
 }

web/src/starred_messages_ui.js

@@ -101,6 +101,5 @@ export function confirm_unstar_all_messages_in_topic(stream_id, topic) {
 }
 
 export function initialize() {
-    starred_messages.initialize();
     rerender_ui();
 }

web/src/ui_init.js

@@ -91,6 +91,7 @@ import * as settings_realm_user_settings_defaults from "./settings_realm_user_se
 import * as settings_sections from "./settings_sections";
 import * as settings_toggle from "./settings_toggle";
 import * as spoilers from "./spoilers";
+import * as starred_messages from "./starred_messages";
 import * as starred_messages_ui from "./starred_messages_ui";
 import * as stream_data from "./stream_data";
 import * as stream_edit from "./stream_edit";
@@ -558,6 +559,7 @@ export function initialize_everything() {
 
     const presence_params = pop_fields("presences", "server_timestamp");
 
+    const starred_messages_params = pop_fields("starred_messages");
     const stream_data_params = pop_fields(
         "subscriptions",
         "unsubscribed",
@@ -599,6 +601,7 @@ export function initialize_everything() {
 
     realm_user_settings_defaults.initialize(realm_settings_defaults_params);
     people.initialize(page_params.user_id, people_params);
+    starred_messages.initialize(starred_messages_params);
 
     let date_joined;
     if (!page_params.is_spectator) {

web/tests/starred_messages.test.js

@@ -5,7 +5,7 @@ const {strict: assert} = require("assert");
 const {mock_esm, with_overrides, zrequire} = require("./lib/namespace");
 const {make_stub} = require("./lib/stub");
 const {run_test} = require("./lib/test");
-const {page_params, user_settings} = require("./lib/zpage_params");
+const {user_settings} = require("./lib/zpage_params");
 
 const top_left_corner = mock_esm("../src/top_left_corner", {
     update_starred_count() {},
@@ -83,8 +83,10 @@ run_test("initialize", () => {
         starred_messages.starred_ids.add(id);
     }
 
-    page_params.starred_messages = [4, 5, 6];
+    const starred_messages_params = {
-    starred_messages.initialize();
+        starred_messages: [4, 5, 6],
+    };
+    starred_messages.initialize(starred_messages_params);
     assert.deepEqual(starred_messages.get_starred_msg_ids(), [4, 5, 6]);
 });