output in triggers throws error if PULUMI_ERROR_OUTPUT_STRING is set

[otahirs]

What happened?

when PULUMI_ERROR_OUTPUT_STRING="true" option is used, and there is an output in the triggers array, the pulumi throws an error that toString was called on an Output

Example

set env variable PULUMI_ERROR_OUTPUT_STRING="true"

have output in the triggers array

const iMightChange = pulumi.output("foo");

const cmd = new command.local.Command(
    `cmd`,
    {
      triggers: [iMightChange],
      interpreter: ['PowerShell', '-Command'],
      create: '', 
    },
    {},
  );

you get error:

minimal_working_example.zip

Output of pulumi about

CLI
Version 3.133.0
Go Version go1.23.1
Go Compiler gc

Plugins
KIND NAME VERSION
resource command 1.0.1
language nodejs unknown

Host
OS Microsoft Windows 11 Enterprise
Version 10.0.22631 Build 22631
Arch x86_64

This project is written in nodejs: executable='C:\Program Files\nodejs\node.exe' version='v20.15.0'

Current Stack: organization/temp/dev

TYPE URN
pulumi:pulumi:Stack urn:pulumi:dev::temp::pulumi:pulumi:Stack::temp-dev
pulumi:providers:command urn:pulumi:dev::temp::pulumi:providers:command::default_1_0_1
command:local:Command urn:pulumi:dev::temp::command:local:Command::cmd

Additional context

workaround is to wrap the whole array in an output

const cmd = new command.local.Command(
    `cmd`,
    {
      triggers: pulumi.output([iMightChange]),
      interpreter: ['PowerShell', '-Command'],
      create: '', 
    },
    {},
  );

Contributing

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[mjeffryes]

I was able to repro this on my local machine when using @pulumi/pulumi version 1.133.0, but it appears to be fixed when using version 1.137.0

We did have a regression in @pulumi/pulumi version 1.133.0 that, while not identical with this issue, probably shared the same root cause, so I suspect it was resolved by the same PR.

Please reopen if upgrading the version does not help.

[otahirs]

still present in 3.140.0

CLI
Version      3.140.0
Go Version   go1.23.3
Go Compiler  gc

Plugins
KIND      NAME    VERSION
language  nodejs  unknown

Host
OS       Microsoft Windows 11 Enterprise
Version  10.0.22631 Build 22631
Arch     x86_64

This project is written in nodejs: executable='C:\Program Files\nodejs\node.exe' version='v20.15.0'

@mjeffryes please re-open

[mjeffryes]

Thanks I was able to reproduce; Looks like you've already linked pulumi/pulumi#17736 which appears to be the upstream fix we need for this.