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Re:Deno – A secure TypeScript runtime on V8 by andrewstuart on Friday October 05, 2018 @03:08AM (#18146276)
top level await is not important.

The easiest solution to this is just put one single line of code at the top of your application, then you can have as many awaits as you like under that.

Re:Deno – A secure TypeScript runtime on V8 by nailer on Friday October 05, 2018 @07:19AM (#18147207)
It's more complex than just adding an IIFE, which is why Ryan mentioned it. You can't await an import, for example.