Another question, I don't think I understand outputs properly, neither of these work

const vpcId = terraformState.outputs["vpc_id"];
const infraVPC = await aws.ec2.getVpc({ id: vpcId });

const vpcId = terraformState.outputs["vpc_id"];
const infraVPC = await aws.ec2.getVpc({ id: vpcId.get() });

since

getVpc

doesn't accept Inputs/Ouputs, how can I achieve this?

This is the unfortunate consequence of https://github.com/pulumi/pulumi/issues/5758 For your specific question, I think you could use the following:

const vpcId = terraformState.outputs["vpc_id"];
const infraVPC = vpcId.apply(id => aws.ec2.getVpc({ id }));

Yeah that works 🙂 Thanks for the issue link! (apparently a VPC id is not enough to identify a single VPC, however my terraform output was undefined, my bad)