diff --git a/packages/frontend-shared/js/collapsed.ts b/packages/frontend-shared/js/collapsed.ts
index 813a280d5c..5642a23819 100644
--- a/packages/frontend-shared/js/collapsed.ts
+++ b/packages/frontend-shared/js/collapsed.ts
@@ -5,7 +5,13 @@
 
 import * as mfm from 'mfm-js';
 import * as Misskey from 'misskey-js';
-import { safeParseFloat } from './safe-parse.js';
+
+function safeParseFloat(str: unknown): number | null {
+	if (typeof str !== 'string' || str === '') return null;
+	const num = parseFloat(str);
+	if (isNaN(num)) return null;
+	return num;
+}
 
 export function shouldCollapseLegacy(note: Misskey.entities.Note, urls: string[]): boolean {
 	const collapsed = note.cw == null && (
diff --git a/packages/frontend-shared/package.json b/packages/frontend-shared/package.json
index 9981d10dd2..3f1f11cecb 100644
--- a/packages/frontend-shared/package.json
+++ b/packages/frontend-shared/package.json
@@ -34,6 +34,7 @@
 	],
 	"dependencies": {
 		"misskey-js": "workspace:*",
+		"mfm-js": "0.24.0",
 		"vue": "3.4.37"
 	}
 }