Helpers didnt work.

[maxpain]

When I try call helper, it causes an error.

Your app is crashing. Here's the latest log.
=> Errors prevented startup:
While building the application:
packages/html-tools/scanner.js:45: Expected identifier, number, string, boolean, or null
{{getTime(date)}}
     ^ (compiling client/views/blocks/chat/chat.jade.html)

UI.registerHelper('getTime', function(time) {
    return time ? moment(time).format('L / HH:mm') : null;
});

each messages
    p
        a(href='/users/#{username}')
            strong.text-info #{username}
                | :  
                =message
            p.text-right.text-muted= getTime(date)

[mquandalle]

The problem comes from the getTime(date) and this is a known limitation. (See for instance #9). This will be fixed at some point.

As a temporary solution you can use:

p.text-right.text-muted {{getTime date}}

[maxpain]

Thank you :)