Unexpected type mismatch when raising null to an exponent

[DominicWuest]

When running the following query:

RETURN null^1 IS NULL

I encountered the following error:

Type mismatch: expected Integer, Float, or Null but was Boolean

I believe the query mentioned above is semantically and syntactically correct and thus no error should be thrown here.

I encountered this issue when testing queries on the FalkorDB master branch in a Docker container running redis:7.2.3-bookworm.

Steps to reproduce

Run the following query and observe it throws an error:

RETURN null^1 IS NULL

Expected behavior

The query should run successfully

Actual behavior

The query fails with the error message Type mismatch: expected Integer, Float, or Null but was Boolean.