assemblyscript/tests/parser/reserved-keywords.ts

function alsoIdentifier(readonly: i32): void {}
class AClass {
  constructor(readonly: i32) {}
  constructor(readonly readonly: i32) {}
}

type type = i32;
var type: i32;
type = 123;

namespace namespace {}
var namespace: i32;
namespace = 123;

abstract class AClass {}
var abstract: i32;
abstract = 123;