javascript-pseudo-classical-inheritance.js

const trace = require('./javascript-trace-prototype-chain')

class Animal {}
class Dog extends Animal {}
class Bichon extends Dog {}
class Foo extends Bichon {}
const foo = new Foo()

console.log(trace(foo))
console.log(trace('abc'))
console.log(trace(() => {}))
console.log(trace([]))
console.log(trace({}))

javascript-trace-prototype-chain.js

module.exports = trace

function trace (object) {
  let proto = object.constructor.prototype
  let result = '*'
  while (proto) {
    result += ` -> ` + proto.constructor.name
    proto = Object.getPrototypeOf(proto)
  }
  return result
}