re bun support looking at the failures in <https github com Pulumi Community #contribute

re: bun support – looking at the failures in <http...

brash-yak-8858

07/30/2025, 4:59 AM

re: bun support – looking at the failures in https://github.com/pulumi/pulumi/pull/20160 (of which I have also experienced locally); specifically it seems like outputs from one resource fail to propagate to inputs of another resource. i think it's located in this code block:

Copy code

function resolveProperties(res, resolvers, t, name, allProps, deps, err, keepUnknowns) {
    // If there is an error, just reject everything.
    if (err) {
        for (const k of Object.keys(resolvers)) {
            const resolve = resolvers[k];
            resolve(undefined, true, false, [], err);
        }
        return;
    }

where this code:

Copy code

secret = new aws.secretsmanager.Secret(
  `repo-${key}-secret`,
  {
    name: `ecr-pullthroughcache/${key}`,
    secretString: JSON.stringify(repo.auth),
  },
);
new aws.ecr.PullThroughCacheRule(
  `repo-${key}-rule`
  {
    credentialArn: secret.awsId,
    upstreamRegistryUrl: repo.url,
    ecrRepositoryPrefix: key,
  },
);

results in the output of:

Copy code

error: creating resource: creating resource (await): operation CREATE failed with "InvalidRequest": The specified upstream registry requires authentication. Specify a valid Secrets Manager ARN containing the upstream registry credentials and try again. (Service: Ecr, Status Code: 400, Request ID: ...) (SDK Attempt Count: 1)

and the debug logs show: > error: failed to register new resource ... [aws-nativeecr...]: Resource monitor is terminating and the resource failing to create because the input is

<nil>

instead of the correct value. i am uncertain where to trace the rest of this, any guidance would be appreciated 🙂

brash-yak-8858

07/30/2025, 6:54 AM

narrowing:

Copy code

// We treat properties with undefined values as if they do not exist.
            const dependentResources = new Set();
            const v = await serializeProperty(`${label}.${k}`, props[k], dependentResources, opts);
            if (v === undefined && props[k] !== undefined) {
              console.log(`failed to serialize ${label}.${k}`);
            }

^^ the above does nothing in

node

and outputs

failed to serialize...

bun

. specifically in

bun

the output is undefined and in

node

the output is a uuid

brash-yak-8858

07/30/2025, 6:59 AM

node

classifies the output as

UNKNOWN

bun

simply returns

undefined

brash-yak-8858

07/30/2025, 7:09 AM

node

has

ResourceImpl

that includes

Unknown { __pulumiUnknown: true }

objects,

bun

does not

brash-yak-8858

07/30/2025, 7:34 AM

execution differences traced to

transferProperties

where

resolvers[k] = (v, isKnown, isSecret, deps = [], err) => {

has

with

Unknown

instances in

node

but not in

bun

brash-yak-8858

07/30/2025, 7:37 AM

Copy code

resolvers[k] = (v, isKnown, isSecret, deps = [], err) => {
          if (v && typeof v === 'object' && ('__pulumiUnknown' in v)) {
            console.log('UNKNOWN VALUE', label);
          }

produces output in

node

but no output in

bun

brash-yak-8858

07/30/2025, 9:26 AM

Copy code

isKnown = Promise.all([isKnown, promise]).then(([known, val]) => {

known

true

bun

and

false

node

brash-yak-8858

07/30/2025, 9:40 AM

Copy code

for (const k of Object.keys(resolvers)) {
        if (!allProps.hasOwnProperty(k)) {
            const resolve = resolvers[k];
            if (!settings_1.isDryRun && keepUnknowns) {
                resolve(output_1.unknown, true, false);
            }
            else {
                console.log(!settings_1.isDryRun() && !keepUnknowns)
                resolve(undefined, !settings_1.isDryRun() && !keepUnknowns, false);
            }
        }
    }

the

!settings_1.isDryRun() && !keepUnknowns

block is

true

bun

and

false

node

brash-yak-8858

07/30/2025, 9:40 AM

specifically

settings_1.isDryRun()

brash-yak-8858

07/30/2025, 10:00 AM

Copy code

dryRun: `${process.env[nodeEnvKeys.dryRun]}` === "true",

solves this problem

brash-yak-8858

07/30/2025, 10:00 AM

for some ungodly reason the result of

process.env[nodeEnvKeys.dryRun]

is not a string?

brash-yak-8858

07/30/2025, 10:03 AM

Copy code

function addToEnvIfDefined(key, value) {
    if (value) {
        process.env[key] = `${value}`;
    }
}

^ is a better fix

brash-yak-8858

07/30/2025, 10:20 AM

resource monitor shut down while waiting on step's done channel

brash-yak-8858

07/30/2025, 10:20 AM

this still fails:

Copy code

resp = await debuggable_1.debuggablePromise(new Promise((resolve, reject) => monitor.registerResource(req, (rpcErr, innerResponse) => {
                        if (rpcErr) {
                            err = rpcErr;

Open in Slack

Previous Next