Tagged template literals not supported?

[stoyanov-x]

If I try to use a tagged template literal, I get the error message Unexpected token after prop: `

The SandboxJS code can be as simple as return primitivesOnlyValidator`Input string`; as long as the primitivesOnlyValidator function is defined in the globals/scope of the execution.

Apparently, the engine/parser "thinks" that primitivesOnlyValidator is referring to a variable or a property being accessed, so the ` character is not valid in that context.

Here is a sample article on this concept.