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There's something dirty in our codebase that worked in 1.X that throws an exception in 2.X `error TS2488: Type 'Promise&lt;Subnet[]&gt;' must have a '[Symbol.iterator]()' method that returns an iterator.` the code is looping thru a list of awsx vpcs that should have a vpc peer, then looping thru the subnets to create routes.

Untitled

I was always thinking pushing objects into a list was going to bite us, but it did work.

Update: The issue isn't with 2.0 directly, it's with a library after the upgrade. Digging into which one, and maybe a diff will help sort me out.

Since I see that array wrapped in a Promise, I’m guessing this is due to moving from synchronous to async invokes: <https://www.pulumi.com/docs/get-started/install/migrating-2.0/#remove-synchronous-invokes>

You’ll want to look in your code for where you might have done something like a `getSubnet` or `getVpc`