Output Format Suggestion - Scalar Values

Preflight Checklist

• I have installed the latest version of Power Query SDK.
• I have checked existing resources, including the common issues and the release notes.
• I have searched for similar issues.

Problem

Scalar values are output as single-column tables.

Desired Solution

Output scalar values as true JSON scalar values.

Alternatives and Workarounds

No response

Additional Context

Currently, PQTest.exe run-test outputs scalar values as though they were a single row table.

`// expression = 123
"Output": [
    {
        "Value": 123
    }
],
"RowCount": 1

The above output is indistinguishable from a true single-row table with a column named "Value".

// expression: Table.FromValue(123)
"Output": [
    {
        "Value": 123
    }
],
"RowCount": 1

To differentiate between the two, could scalar values be output as JSON scalar values? For example, ouput the M expression 123 as "Output": 123 instead of what the above examples show.

Start at the PQTest.exe run-test entry point and trace how scalar expressions and tables are serialized. Verify the behavior using the issue's examples: a scalar such as 123 should produce JSON 123, while Table.FromValue(123) should remain a single-row table with RowCount 1.