pub trait ImportResolver {
    // Required method
    fn resolve_import(
        &self,
        base: &FileName,
        module_specifier: &str,
    ) -> Result<JsWord, Error>;
}pub trait ImportResolver {
    // Required method
    fn resolve_import(
        &self,
        base: &FileName,
        module_specifier: &str,
    ) -> Result<JsWord, Error>;
}