assertIsFunction in std

Asserts that a value is the boolean value true.

assertIs(
  @actual: bool,
  error?: string,
)

Name	Type	Description	Required
`actual`	`bool`	Value to check. If this is the boolean value true, assert passes. Otherwise it fails..	Yes
`error`	`string`	If the value was false, the program will terminate with this error message	No

kclIsFun = true
assertIs(kclIsFun)