oberonjs/snapshot/oberon.js/RTL$.js

var RTL$ = {
    extend: function extend(methods){
        function Type(){
            for(var m in methods)
                this[m] = methods[m];
        }
        Type.prototype = this.prototype;

        var result = methods.init;
        result.prototype = new Type(); // inherit this.prototype
        result.prototype.constructor = result; // to see constructor name in diagnostic
        
        result.extend = extend;
        return result;
    },
    assert: function (condition, code){
        if (!condition)
            throw new Error("assertion failed"
                          + ((code !== undefined) ? " with code " + code : ""));
    }
};

exports.RTL$ = RTL$;