I want to associate each of my vpcs external subnets with a nat gateway and make available a map of the subnet ids to gateways for use bny other components.

vpc.publicSubnetIds.reduce((gateways, id) => {
      gateways[pulumi.interpolate`${id}`] = vpc.addNatGateway(
        `${config.release.name}-${name}-${id}-gateway`,
        { subnet: id },
        { parent: vpc }
      );
    }, {});

Doesn’t work as output can’t be a key … any guidence

Try this:

vpc.publicSubnetIds.apply(ids => {
  ids.forEach(id => {
     gateways[id] = vpc.addNatGateway(
        `${config.release.name}-${name}-${id}-gateway`,
        { subnet: id },
        { parent: vpc }
      );
  });
});

unfortunately subnetids is an array of output string not a output of string array

Ah I see, how about using

pulumi.all()

?

pulumi.all(vpc.publicSubnetIds).apply((ids) => {
  ids.forEach(id => {
     gateways[id] = vpc.addNatGateway(
        `${config.release.name}-${name}-${id}-gateway`,
        { subnet: id },
        { parent: vpc }
      );
  });
});