postal.js/lib/node/classic-resolver.js

var classicBindingsResolver = {
	cache : { },

	compare : function ( binding, topic ) {
		if ( this.cache[topic] && this.cache[topic][binding] ) {
			return true;
		}
		//  binding.replace(/\./g,"\\.")             // escape actual periods
		//         .replace(/\*/g, ".*")             // asterisks match any value
		//         .replace(/#/g, "[A-Z,a-z,0-9]*"); // hash matches any alpha-numeric 'word'
		var rgx = new RegExp( "^" + binding.replace( /\./g, "\\." ).replace( /\*/g, ".*" ).replace( /#/g, "[A-Z,a-z,0-9]*" ) + "$" ),
			result = rgx.test( topic );
		if ( result ) {
			if ( !this.cache[topic] ) {
				this.cache[topic] = {};
			}
			this.cache[topic][binding] = true;
		}
		return result;
	},

	reset : function () {
		this.cache = {};
	}
};


module.exports = {
	configure: function(postal) {
		postal.configuration.resolver = classicBindingsResolver;
		return postal;
	}
};