Equivalent of Template.registerHelper for JSX?

In Blaze, we have a elegant way to define helpers. Template.registerHelper. Does jsx have something equivalent?

If possible, i’d like to even chain helper calls… something like:

{ formatAsCurrency round this.state.price}


if formatAsCurrency and round are javascript functions, then you just do

{formatAsCurrency(round(this.state.price))} - surprise, it is JavaScript.