Is automatic conversion of JavaScript to TypeScript relevant?

Question

JavaScript

There is a fairly large project based on ES3 + Google Closure Compiler.
It is necessary to convert the entire project to Webpack + TypeScript + possibly Google Closure Compiler to optimize the code. There are many reasons for this.

Tell me if automatic conversion of JavaScript to TypeScript with subsequent manual optimizations is relevant?
Or all to convert "manually"?

Answer 1

relevant but personally I don’t know such tools