microsoft / microsoft/Power-Fx
Confusing error message for untyped type mismatch
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Description
> Time(3,0,0) = ParseJSON("[2]")
Error: InvalidArgument - The untyped object argument to the 'TimeValue' function has an incorrect type.
Expected: Text, Actual: Microsoft.PowerFx.Types.ExternalType.
> Time(3,0,0) = ParseJSON("{""a"":3}")
Error: InvalidArgument - The untyped object argument to the 'TimeValue' function has an incorrect type.
Expected: Text, Actual: Microsoft.PowerFx.Types.ExternalType.
> Time(3,0,0) = ParseJSON("true")
Error: InvalidArgument - The untyped object argument to the 'TimeValue' function has an incorrect type.
Expected: Text, Actual: Boolean.
Note that the first two error messages refer to an internal data type and don't clarify that they found an array or an object. This is different from the last example which maps to a FormulaValue and for which a more useful "Boolean" can be provided.
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Research direction
Start from the TimeValue and ParseJSON error paths shown in the examples, then compare how Boolean types are rendered with the internal ExternalType cases. Done means array and object inputs report useful type names rather than the internal data type; verify the three examples produce clearer messages.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- csharp
- Domain
- compilers
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 48/100