You can translate with pluralization by defining the locale that have a pipe | separator, and define plurals in pipe separator. Remember that template should use $tc() instead of $t().
First you need to define the messages,
const messages = {
en: {
user: 'user | users',
friend: 'no friend | one friend | {count} friends'
}
}
And the template can configure the messages with values
<p>{{ $tc('user', 1) }}</p>
<p>{{ $tc('user', 10) }}</p>
<p>{{ $tc('friend', 0) }}</p>
<p>{{ $tc('friend', 1) }}</p>
<p>{{ $tc('friend', 10, { count: 10 }) }}</p>
Finally it outputs the result as below
<p>user</p>
<p>users</p>
<p>no friend</p>
<p>one friend</p>
<p>10 friends</p>