module main

// Define a simple interface
pub interface Node {
    kind() int
    name() string
}

// Implement the interface
pub struct MyNode {
pub:
    value int
    text  string
}

pub fn (n MyNode) kind() int {
    return 1
}

pub fn (n MyNode) name() string {
    return n.text
}

// Define a type alias to the interface
pub type Expr = Node

// Function using the type alias
pub fn process_node(expr Expr) string {
    return expr.name()
}

fn test_alias_interface() {
    node := MyNode{
        value: 42
        text:  'test'
    }
    result := process_node(node)
    println('Result: ${result}')
    assert result == 'test'
}