Deno is a try to replace node.js, but I think it won't get much success. Here is some reasons:

1. Javascript is the first class language instead of typescript.
2. Node.js ecosystem is much mature than deno's
3. Node.js's problem is not in it's performance but the version management semver and false version range. Now throught package-lock.json, this problem can be fixed in one way or another.
4. Deno's apis are very ugly and none logic. No excellent programmer will write good packages over an ugly structured platform. While node.js has much better apis.
5. Deno has little improvment over node.js.