Cannot extend non-Wing constructs

[eladb]

I tried this:

bring "cdk8s" as cdk8s;

class MyChart extends cdk8s.Chart {
  init() {
    new cdk8s.ApiObject(kind: "Pod", apiVersion: "v1");
  }
}

let c = new MyChart();

This happened:

ERROR: this._addInflightOps is not a function

I expected this:

To work

Is there a workaround?

No response

Component

Compiler, SDK

Wing Version

No response

Node.js Version

No response

Platform(s)

No response

Anything else?

No response

Community Notes

• Please vote by adding a 👍 reaction to the issue to help us prioritize.
• If you are interested to work on this issue, please leave a comment.

[Chriscbr]

@eladb I'm curious if using composition is a workaround for your use case? (trying to understand priority of this)

[github-actions]

Hi,

This issue hasn't seen activity in 60 days. Therefore, we are marking this issue as stale for now. It will be closed after 7 days.
Feel free to re-open this issue when there's an update or relevant information to be added.
Thanks!

[staycoolcall911]

I believe this now works.
CC: @eladb, @Chriscbr

[Chriscbr]

Thanks for the heads up @staycoolcall911. It looks like the immediate bug above was fixed (I think via #4640), but if I extend the example a little further with some inflight code, we still get errors:

bring "cdk8s" as cdk8s;
bring cloud;

let global_b = new cloud.Bucket();

class MyChart extends cdk8s.Chart {
  local_b: cloud.Bucket;
  init() {
    new cdk8s.ApiObject(kind: "Pod", apiVersion: "v1");
    this.local_b = new cloud.Bucket();
  }

  pub inflight save() {
    global_b.put("data.txt", "Hello World!");
    this.local_b.put("data.txt", "Hello World!");
  }
}

let c = new MyChart();
new cloud.Function(inflight () => {
  c.save();
});

error:

ERROR: unable to serialize immutable data object of type MyChart

target/main.wsim.988477.tmp/.wing/preflight.js:79
         _registerOnLift(host, ops) {
           if (ops.includes("handle")) {
>>           $Closure1._registerOnLiftObject(c, host, ["save"]);
           }
           super._registerOnLift(host, ops);

I think the root cause is our lifting system is still assuming std.Resource is in the class's hierarchy. Refactoring the SDK to remove std.Resource feels like the cleanest solution IMO

[github-actions]

Hi,

This issue hasn't seen activity in 90 days. Therefore, we are marking this issue as stale for now. It will be closed after 7 days.
Feel free to re-open this issue when there's an update or relevant information to be added.
Thanks!

[Chriscbr]

From my testing it looks like the previous example now works. I was able to uncover a separate issue but it's more minor: #6629

Closing.