Although I understand the value of TypeScript (TS), JavaScript (JS) is native to the browsers and find it easier to debug than TypeScript. Does it matter? I think depends on the framework you are using. But understand... I despise both of them, just try to pick JS when I can, and if not end up using TS. For framework I do like using VueJS + Vuetify (you can build a nice web application quickly), not a huge fan of React.