Is there any tool or library to convert javascript to typescript [duplicate]

var name = "John";
var score1 = 50;
var score2 = 42.50;
var sum = score1 + score2;
console.log("name" + name);
console.log("first score: " + score1);
console.log("second score : " + score2);
console.log("sum of the scores: " + sum);

I have a javascript file as above i need to convert it to typescript file as follows:

var name1:string = "John"; 
var score1:number = 50;
var score2:number = 42.50
var sum = score1 + score2 
console.log("name"+name1) 
console.log("first score: "+score1) 
console.log("second score: "+score2) 
console.log("sum of the scores: "+sum)

Is there any library or tools to achieve it?