Condicionais com múltiplos argumentos ‘if’ e ‘except’ nas barras de espaço para Meteor.js

Síntese: https://gist.github.com/victorbstan/3462664de456146e87db

// dependency: https://lodash.com 

Template.registerHelper('any', function () {
  var any = false;
  var cleanArgs = lodash.filter(arguments, function ( arg ) {
    if ( lodash.isArray( arg ) )
      return true;
  });
  for ( var i = 0; i < cleanArgs.length; i++ ) {
    if ( ! lodash.isEmpty( cleanArgs[i] ) )
      any = true;
  };
  return any;
});

<!--
Usage examples
-->

<!-- IF ANY -->
{{#if any truthyOne truthyTwo falsyThree}}
  You will see this.
{{/if}}

{{#if any falsyOne falsyTwo falsyThree}}
  You won't see this.
{{/if}}

<!-- UNLESS ANY -->

{{#unless any falsyOne falsyTwo falsyThree}}
  You will see this.
{{/unless}}

{{#unless any falsyOne falsyTwo truthyThree}}
  You won't see this.
{{/unless}}