Writing binding providers in CoffeeScript?

In his KnockoutJs 1.3 beta post, Steve Sanderson has an example of using Binding providers ("5. Binding providers (and hence external bindings)") where he makes a comment in the JSFiddle JavaScript tab that says "// This syntax would be way more succinct with CoffeeScript".

How would this actually be accomplished?

// This syntax would be way more succinct with CoffeeScript
ko.bindingConventions.conventions(".person-editor", {
    ".person-editor"  : { 'with': myViewModel.person },
    ".first-name"     : function(person) { return { value: person.firstName } },
    ".last-name"      : function(person) { return { value: person.lastName } }
});

ko.bindingConventions.conventions("#weather-list", {
    "#weather-list"    : { 'with': myViewModel.weather },
    ".cities-list"     : function(weather) { return { foreach: weather.cities } },  
    ".city"            : function(item) { return { text: item.city } },      
    ".temp"            : function(item) { return { text: item.temperature } },        
    ".add-city"        : { click: function() { this.addItem() } }  
});