Does ts-morph can return source file if it's not a .ts?

Question

I'm using the function getModuleSpecifierSourceFile from ts-morph to get the file designated by the import. But I get undefined from .vue imports (.ts files working perfectly well). Does ts-morph only handle typescript file imports ?

Here is the file from which I get the undefined source file :

import CellVue from './CellVue.vue';

export { CellVue };