A ModuleRequest represents the request to import a module with given import attributes and phase.
ModuleRequest
24.4.0
The "with" value passed to the WithClause in a ImportDeclaration, or an empty object if no value was provided.
"with"
WithClause
ImportDeclaration
The phase of the requested module ("source" or "evaluation").
"source"
"evaluation"
The specifier of the requested module.