You don't have to be an expert in TypeScript to know that the TypeScript compiler just strips the types from the code and leaves the rest as-is (if you are targeting a somewhat modern JS engine). The runtime performance of a TypeScript program is the same as that of the equivalent JavaScript program.
But of course, a TypeScript program could be much slower than a different JavaScript program, as is probably happening in this case.
I agree with others that the difference in results between JavaScript and TypeScript makes the quality of this paper highly suspect.
But of course, a TypeScript program could be much slower than a different JavaScript program, as is probably happening in this case.
I agree with others that the difference in results between JavaScript and TypeScript makes the quality of this paper highly suspect.