diff --git a/frontend_tests/node_tests/emoji.js b/frontend_tests/node_tests/emoji.js
index 446cf06c05..6a96e33c4e 100644
--- a/frontend_tests/node_tests/emoji.js
+++ b/frontend_tests/node_tests/emoji.js
@@ -47,3 +47,69 @@ run_test("get_emoji_* API", () => {
 
     assert.equal(emoji.get_realm_emoji_url("spain"), "/some/path/to/spain.png");
 });
+
+run_test("get_emoji_details_by_name", () => {
+    let emoji_name = "smile";
+
+    let result = emoji.get_emoji_details_by_name(emoji_name);
+    assert.deepEqual(result, {
+        emoji_name: "smile",
+        emoji_code: "1f642",
+        reaction_type: "unicode_emoji",
+    });
+
+    // Test adding an unicode_emoji.
+    emoji_name = "smile";
+
+    result = emoji.get_emoji_details_by_name(emoji_name);
+    assert.deepEqual(result, {
+        emoji_name: "smile",
+        reaction_type: "unicode_emoji",
+        emoji_code: "1f642",
+    });
+
+    // Test adding zulip emoji.
+    emoji_name = "zulip";
+
+    result = emoji.get_emoji_details_by_name(emoji_name);
+    assert.deepEqual(result, {
+        emoji_name: "zulip",
+        reaction_type: "zulip_extra_emoji",
+        emoji_code: "zulip",
+        url: "/static/generated/emoji/images/emoji/unicode/zulip.png",
+    });
+
+    // Test adding realm emoji.
+    emoji_name = "spain";
+
+    emoji_name = emoji.get_emoji_details_by_name(emoji_name);
+    assert.deepEqual(emoji_name, {
+        emoji_name: "spain",
+        reaction_type: "realm_emoji",
+        emoji_code: "101",
+        url: "/some/path/to/spain.png",
+    });
+
+    // Test sending without emoji name.
+    assert.throws(
+        () => {
+            emoji.get_emoji_details_by_name();
+        },
+        {
+            name: "Error",
+            message: "Emoji name must be passed.",
+        },
+    );
+
+    // Test sending an unknown emoji.
+    emoji_name = "unknown-emoji";
+    assert.throws(
+        () => {
+            emoji.get_emoji_details_by_name(emoji_name);
+        },
+        {
+            name: "Error",
+            message: "Bad emoji name: unknown-emoji",
+        },
+    );
+});
diff --git a/frontend_tests/node_tests/reactions.js b/frontend_tests/node_tests/reactions.js
index d5903657cb..64c44ddf48 100644
--- a/frontend_tests/node_tests/reactions.js
+++ b/frontend_tests/node_tests/reactions.js
@@ -331,12 +331,15 @@ test("sending", ({override}) => {
             reaction_type: "zulip_extra_emoji",
             emoji_name: "zulip",
             emoji_code: "zulip",
+            url: "/static/generated/emoji/images/emoji/unicode/zulip.png",
         });
     }
 
     emoji_name = "unknown-emoji"; // Test sending an emoji unknown to frontend.
-    blueslip.expect("warn", "Bad emoji name: " + emoji_name);
-    reactions.toggle_emoji_reaction(message.id, emoji_name);
+    assert.throws(() => reactions.toggle_emoji_reaction(message.id, emoji_name), {
+        name: "Error",
+        message: "Bad emoji name: unknown-emoji",
+    });
 });
 
 test("set_reaction_count", () => {
diff --git a/frontend_tests/node_tests/user_status.js b/frontend_tests/node_tests/user_status.js
index 5e0bb9de68..69bb65440c 100644
--- a/frontend_tests/node_tests/user_status.js
+++ b/frontend_tests/node_tests/user_status.js
@@ -5,7 +5,6 @@ const {strict: assert} = require("assert");
 const {mock_esm, zrequire} = require("../zjsunit/namespace");
 const {run_test} = require("../zjsunit/test");
 const blueslip = require("../zjsunit/zblueslip");
-const {page_params} = require("../zjsunit/zpage_params");
 
 const channel = mock_esm("../../static/js/channel");
 
@@ -39,109 +38,6 @@ function initialize() {
     user_status.initialize(params);
 }
 
-run_test("get_extra_emoji_info", () => {
-    page_params.emojiset = "text";
-
-    let emoji_info = {};
-
-    emoji_info = user_status.get_emoji_info(emoji_info);
-    assert.deepEqual(emoji_info, {});
-
-    emoji_info = {emoji_name: "smile"};
-
-    emoji_info = user_status.get_emoji_info(emoji_info);
-    assert.deepEqual(emoji_info, {
-        emoji_name: "smile",
-        emoji_alt_code: true,
-    });
-
-    page_params.emojiset = "google";
-
-    // Test adding an unicode_emoji.
-    emoji_info = {emoji_name: "smile", emoji_code: "1f642", reaction_type: "unicode_emoji"};
-
-    emoji_info = user_status.get_emoji_info(emoji_info);
-    assert.deepEqual(emoji_info, {
-        emoji_name: "smile",
-        emoji_alt_code: false,
-        reaction_type: "unicode_emoji",
-        emoji_code: "1f642",
-    });
-
-    // Test adding an unicode_emoji's name only.
-    // It should fill in other details automatically.
-    emoji_info = {emoji_name: "smile"};
-
-    emoji_info = user_status.get_emoji_info(emoji_info);
-    assert.deepEqual(emoji_info, {
-        emoji_name: "smile",
-        emoji_alt_code: false,
-        reaction_type: "unicode_emoji",
-        emoji_code: "1f642",
-    });
-
-    // Test adding zulip emoji.
-    emoji_info = {emoji_name: "zulip", emoji_code: "zulip", reaction_type: "zulip_extra_emoji"};
-
-    emoji_info = user_status.get_emoji_info(emoji_info);
-    assert.deepEqual(emoji_info, {
-        emoji_name: "zulip",
-        emoji_alt_code: false,
-        reaction_type: "zulip_extra_emoji",
-        emoji_code: "zulip",
-        url: "/static/generated/emoji/images/emoji/unicode/zulip.png",
-    });
-
-    // Test adding zulip emoji's name only.
-    emoji_info = {emoji_name: "zulip"};
-
-    emoji_info = user_status.get_emoji_info(emoji_info);
-    assert.deepEqual(emoji_info, {
-        emoji_name: "zulip",
-        emoji_alt_code: false,
-        reaction_type: "zulip_extra_emoji",
-        emoji_code: "zulip",
-        url: "/static/generated/emoji/images/emoji/unicode/zulip.png",
-    });
-
-    // Test adding realm_emoji emoji.
-    emoji_info = {
-        emoji_name: "realm_emoji",
-        emoji_code: "991",
-        reaction_type: "realm_emoji",
-    };
-
-    emoji_info = user_status.get_emoji_info(emoji_info);
-    assert.deepEqual(emoji_info, {
-        emoji_name: "realm_emoji",
-        emoji_alt_code: false,
-        reaction_type: "realm_emoji",
-        emoji_code: "991",
-        url: "/url/for/991",
-    });
-
-    // Test adding only realm_emoji's name only.
-    // It should fill in other details automatically.
-    emoji_info = {
-        emoji_name: "realm_emoji",
-    };
-
-    emoji_info = user_status.get_emoji_info(emoji_info);
-    assert.deepEqual(emoji_info, {
-        emoji_name: "realm_emoji",
-        emoji_alt_code: false,
-        reaction_type: "realm_emoji",
-        emoji_code: "991",
-        url: "/url/for/991",
-    });
-
-    // Test sending an unknown emoji.
-    emoji_info = {emoji_name: "unknown-emoji"};
-    blueslip.expect("warn", "Bad emoji name: " + emoji_info.emoji_name);
-    emoji_info = user_status.get_emoji_info(emoji_info);
-    assert.deepEqual(emoji_info, {});
-});
-
 run_test("basics", () => {
     initialize();
     assert.ok(user_status.is_away(2));
diff --git a/static/js/reactions.js b/static/js/reactions.js
index 5037890cb0..9ef054648f 100644
--- a/static/js/reactions.js
+++ b/static/js/reactions.js
@@ -103,27 +103,8 @@ export function toggle_emoji_reaction(message_id, emoji_name) {
     // clicking on a reaction and that is handled by `process_reaction_click()`
     // method. This codepath is to be used only where there is no chance of an
     // user interacting with a deactivated realm emoji like emoji picker.
-    const reaction_info = {
-        emoji_name,
-    };
-
-    if (emoji.active_realm_emojis.has(emoji_name)) {
-        if (emoji_name === "zulip") {
-            reaction_info.reaction_type = "zulip_extra_emoji";
-        } else {
-            reaction_info.reaction_type = "realm_emoji";
-        }
-        reaction_info.emoji_code = emoji.active_realm_emojis.get(emoji_name).id;
-    } else {
-        const codepoint = emoji.get_emoji_codepoint(emoji_name);
-        if (codepoint === undefined) {
-            blueslip.warn("Bad emoji name: " + emoji_name);
-            return;
-        }
-        reaction_info.reaction_type = "unicode_emoji";
-        reaction_info.emoji_code = codepoint;
-    }
 
+    const reaction_info = emoji.get_emoji_details_by_name(emoji_name);
     update_ui_and_send_reaction_ajax(message_id, reaction_info);
 }
 
diff --git a/static/js/user_status.js b/static/js/user_status.js
index 525283640e..bd42f85b7e 100644
--- a/static/js/user_status.js
+++ b/static/js/user_status.js
@@ -1,8 +1,5 @@
-import * as emoji from "../shared/js/emoji";
-
 import * as blueslip from "./blueslip";
 import * as channel from "./channel";
-import {page_params} from "./page_params";
 
 const away_user_ids = new Set();
 const user_info = new Map();
@@ -45,44 +42,6 @@ export function revoke_away(user_id) {
     away_user_ids.delete(user_id);
 }
 
-// This function will add missing/extra parameters to the emoji info object,
-// that would need by template to render an emoji.
-export function get_emoji_info(emoji_info) {
-    // To call this function you must pass at least an emoji name.
-    if (!emoji_info || !emoji_info.emoji_name) {
-        return {};
-    }
-
-    const status_emoji_info = {...emoji_info};
-
-    status_emoji_info.emoji_alt_code = page_params.emojiset === "text";
-    if (status_emoji_info.emoji_alt_code) {
-        return status_emoji_info;
-    }
-
-    if (emoji.active_realm_emojis.has(emoji_info.emoji_name)) {
-        if (!emoji_info.reaction_type) {
-            if (emoji_info.emoji_name === "zulip") {
-                status_emoji_info.reaction_type = "zulip_extra_emoji";
-            } else {
-                status_emoji_info.reaction_type = "realm_emoji";
-            }
-        }
-        const more_emoji_info = emoji.active_realm_emojis.get(emoji_info.emoji_name);
-        status_emoji_info.emoji_code = emoji_info.emoji_code || more_emoji_info.id;
-        status_emoji_info.url = more_emoji_info.emoji_url;
-    } else {
-        const codepoint = emoji.get_emoji_codepoint(emoji_info.emoji_name);
-        if (codepoint === undefined) {
-            blueslip.warn("Bad emoji name: " + emoji_info.emoji_name);
-            return {};
-        }
-        status_emoji_info.reaction_type = emoji_info.reaction_type || "unicode_emoji";
-        status_emoji_info.emoji_code = emoji_info.emoji_code || codepoint;
-    }
-    return status_emoji_info;
-}
-
 export function is_away(user_id) {
     return away_user_ids.has(user_id);
 }
diff --git a/static/shared/js/emoji.js b/static/shared/js/emoji.js
index 4477459596..5d7ef58747 100644
--- a/static/shared/js/emoji.js
+++ b/static/shared/js/emoji.js
@@ -174,6 +174,36 @@ export function update_emojis(realm_emojis) {
     build_emoji_data(active_realm_emojis);
 }
 
+// This function will provide required parameters that would
+// need by template to render an emoji.
+export function get_emoji_details_by_name(emoji_name) {
+    // To call this function you must pass an emoji name.
+    if (!emoji_name) {
+        throw new Error("Emoji name must be passed.");
+    }
+
+    const emoji_info = {emoji_name};
+
+    if (active_realm_emojis.has(emoji_name)) {
+        if (emoji_name === "zulip") {
+            emoji_info.reaction_type = "zulip_extra_emoji";
+        } else {
+            emoji_info.reaction_type = "realm_emoji";
+        }
+        const emoji_code_info = active_realm_emojis.get(emoji_name);
+        emoji_info.emoji_code = emoji_code_info.id;
+        emoji_info.url = emoji_code_info.emoji_url;
+    } else {
+        const codepoint = get_emoji_codepoint(emoji_name);
+        if (codepoint === undefined) {
+            throw new Error("Bad emoji name: " + emoji_name);
+        }
+        emoji_info.reaction_type = "unicode_emoji";
+        emoji_info.emoji_code = codepoint;
+    }
+    return emoji_info;
+}
+
 export function initialize(params) {
     emoji_codes = params.emoji_codes;