After expression is parsed, extraneous characters are ignored and don't produce errors

[NoxHarmonium]

This parses correctly without an error, even though the trailing braces are invalid.

let javaString = import "java.lang.String": {
  "noargs": "should BE lower CASE".toUpperCase().toLowerCase()
}}}}}}

I think because the parser only parses a single expression and then stops. Probably needs an explicit check for trailing characters after the root expression is parsed