Chore: Move isJSON helper (#23491)

client/views/admin/mailer/Mailer.js

@@ -10,8 +10,8 @@ import {
 } from '@rocket.chat/fuselage';
 import React, { useState, useCallback } from 'react';
 
-import { isJSON } from '../../../../app/utils/lib/isJSON';
 import { isEmail } from '../../../../lib/utils/isEmail';
+import { isJSON } from '../../../../lib/utils/isJSON';
 import Page from '../../../components/Page';
 import { useTranslation } from '../../../contexts/TranslationContext';
 

app/utils/lib/isJSON.js → lib/utils/isJSON.ts

-export const isJSON = (value) => {
+export const isJSON = (value: string): boolean => {
 	try {
 		return !!JSON.parse(value);
 	} catch {