This service enables us to provide you with better tooling, so your JavaScript code can benefit from richer IntelliSense based on type definitions. The new language service is solely based on the TypeScript language service, which is powered by static analysis. Users have the new JavaScript language service out-of-the-box. The option to restore to the legacy JavaScript language service is no longer available. This engine gives you better feature support, richness, and integration immediately out-of-the-box. The JavaScript experience in Visual Studio 2022 is powered by the same engine that provides TypeScript support. You can write JavaScript or TypeScript code in Visual Studio for many application types and services. Visual Studio 2022 provides rich support for JavaScript development, both using JavaScript directly, and also using the TypeScript programming language, which was developed to provide a more productive and enjoyable JavaScript development experience, especially when developing projects at scale.

Visual studio java script