use std::collections::HashMap;
use serde::{Deserialize, Serialize};
let primitiveString: String = "Hello World";
let primitiveNumber: f64 = 42;
let primitiveBoolean: bool = true;
let primitiveNull: Option<()> = None;
let primitiveUndefined: Option<()> = None;
let primitiveAny: serde_json::Value = "anything";
let primitiveUnknown: serde_json::Value = "unknown";
let primitiveNever: ! = // TODO: Implement expression();
let primitiveVoid: () = None;