You'll still be writing Javascript/Typescript with Svelte. What the article means by "Svelte 5 is not Javascript" is that all of your code outside things like S

You'll still be writing Javascript/Typescript with Svelte. What the article means by "Svelte 5 is not Javascript" is that all of your code outside things like Stores will be compiled in a manner that makes it harder to debug, since it's not normal Javascript but a Svelte-compiled JS that won't make sense in the debugger. I would opt for better debugger tooling specifically for Svelte than strip away the abstractions. Its the lack of a runtime managing a virtual DOM that makes it unique and performant, and frameworks like React also essentially have their own compilation step that obfuscates code. Source maps won't help much by itself; the React debugger is where you have a better view on your components and how things are wired up.