react-toolsのjsxで変換

greeter-after.js

                     
    function Greeter(message)         {"use strict";
        this.greeting = message;
    }
    Greeter.prototype.greet=function() {"use strict";
        return "Hello, " + this.greeting;
    };


var greeter = new Greeter("world");
greeter.greet();

greeter-before.js

class Greeter {
    greeting: string;
    constructor(message: string) {
        this.greeting = message;
    }
    greet() {
        return "Hello, " + this.greeting;
    }
}

var greeter = new Greeter("world");
greeter.greet();

jsx

jsx --strip-types --harmony --watch src/ build/