expected function to return type when trying to define an optional function

[ekeren]

I tried this:

struct Options {
  mappingFunction: ((num, str): str)? ; 
}

This happened:

Failed to compile.

error: Expected function return type
  --> test.w:2:20
  |
2 |   mappingFunction: ((num, str): str)? ; 
  |                    ^^^^^^^^^^^^^^^^^ Expected function return type


error: Compiler bug (panicked at 'called `Result::unwrap()` on an `Err` value: ()', libs/wingc/src/parser.rs:910:34) during parsing, please report at https://docs.winglang.io/contributing/bugs
  --> test.w:1:1
  |  
1 | / struct Options {
2 | |   mappingFunction: ((num, str): str)? ; 
3 | | }
  | \-^ Compiler bug (panicked at 'called `Result::unwrap()` on an `Err` value: ()', libs/wingc/src/parser.rs:910:34) during parsing, please report at https://docs.winglang.io/contributing/bugs

I expected this:

mappingFunction to be an optional function

Is there a workaround?

No response

Component

Compiler

Wing Version

0.22.27

Wing Console Version

No response

Node.js Version

No response

Platform(s)

No response

Anything else?

No response

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[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!

[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!

[yoav-steinberg]

dup of #4296
pr submitted for this in #5455