Can Deno list all functions within a script without explicit registration or annotation?

Object.getOwnPropertyNames(globalThis)
  .filter((item: string) => typeof (globalThis as any)[item] === "function")
  .forEach((funcName: string) => console.log(funcName));

Object
Function
Array
Number
parseFloat
parseInt
Boolean
String
Symbol
Date
Promise
RegExp
Error
AggregateError
EvalError
RangeError
ReferenceError
SyntaxError
TypeError
URIError
ArrayBuffer
Uint8Array
...

Object.getOwnPropertyNames(window)
  .filter(item => typeof window[item] === "function")
  .forEach(funcName => console.log(funcName));

...
testFunction1
testFunction2