TypeScript support; Remote Preview with WebView2.
The 'import { Utils } from "./utils";' in the 'ts' file was translated into a' js' file and changed to 'import { Utils } from "./utils";', but 'import { Utils } from "./utils";' cannot function properly because it lacks the '.js' suffix name
Just import as "./utils.js" even in your TypeScript file - then it's correct after compilation, and TypeScript still knows that you mean to import "./utils.ts" in your TypeScript code.