Echo JS 0.11.0

The fact that you can rely on non-immutable sources in Deno doesn't mean that you should. There are services like nest.land or NPM that provide immutable access to the modules that you need, so registry is not a concern (which is a dumb concern nonetheless, you download thousands of modules everyday through you browser and I guarantee you that less than 000.1% of the time this process results in a failed request, in fact I'd say NPM is just as reliable).

Second, we have multiple ways of using modules written for Node. Node modules are just JavaScript modules ofuscated by CommonJS syntax, and there are services like JSPM and PIKA that transform this syntax directly from NPM (versions, notes and TS types included) into JavaScript for our use anywhere.

Overall I'd say you have a big misconception of how Deno works and that's why you declare it as a loss of time. Perhaps trying it out first before shouting out statements like that?