Use handlebars helper when returning handlebars.SafeString()?

[Whoffie]

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Say I'm registering a helper like so in NodeJS:

hbs.registerHelper("headingLoop", function() {
    return new hbs.SafeString("{{otherHelper}}")
}

Calling other helpers won't work using this method, so I'm wondering if there's another way that I'm missing? Thanks.