"no declaration found" for heteregeneous list

[vincer]

Extension Version

v2.29.5

VS Code Version

Version: 1.87.2 (Universal)
Commit: 863d2581ecda6849923a2118d93a088b0745d9d6
Date: 2024-03-08T15:21:31.043Z
Electron: 27.3.2
ElectronBuildId: 26836302
Chromium: 118.0.5993.159
Node.js: 18.17.1
V8: 11.8.172.18-electron.0
OS: Darwin arm64 23.3.0

Operating System

macOS 14.3 (23D56)

Terraform Version

1.7.5

Steps to Reproduce

  a = [
    {
      foo = "bar"
      x   = [1]
    },
    {
      foo = "baz"
    }
  ]

  b = [for e in local.a : e]
}

Expected Behavior

No errors.

Actual Behavior

local.a is marked as an error showing No declaration found.

Terraform Configuration

locals {
  a = [
    {
      foo = "bar"
      x   = [1]
    },
    {
      foo = "baz"
    }
  ]

  b = [for e in local.a : e]
}

Project Structure

No response

Gist

No response

Anything Else?

Seems similar to #1698 and disabling "terraform.validation.enableEnhancedValidation" gets rid of the problem.

Either removing local.a[0]["x"] or adding a `local.a[1]["x"] so that the objects are homogeneous in format also gets rid of the error.

Workarounds

No response

References

No response

Help Wanted

• I'm interested in contributing a fix myself

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[prototype7630]

I seem to be having this problem within lookups and joins where the input var is local and is either a list or a map on 2.29.5 also. The variable in question is also interpolated in a string.

[eldad]

We encounter the same issue. In our case, the code is mapping an object to another and filling defaults - the missing records are a feature we need to reduce verbosity.

locals {
  a = [
    {
      foo = "bar"
      x   = [1]
    },
    {
      foo = "baz"
    }
  ]

  b = [for e in local.a : { foo: e.foo , x = try(e.x, [2]) } ]
}

[hronix]

Have the same issue for months ...

[jmriddell]

I observe the same issue at version 2.34.0.

Apparently it happens on locals which value is defined with an expression surrounded by [], like a list literal or for expression used with [].

Workaround

Using the concat funtion to avoid top level [] removes the error for me.

not_found_declaraion_elsewhere = [
  for i, letter in ["f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p"] :
  "/dev/sd${letter}"
]

fixed = concat([
  for i, letter in ["f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p"] :
  "/dev/sd${letter}"
])