How to create a JS object with the default prototype from an object without a prototype?

Question

Background: The module query-string is for example able to parse key=value&hello=universe to an object {key: \'value\', hello: \'univ

Answer 1

I wouldn't recommend changing the prototype of a third party package, it may be frozen and prone to runtime errors. I'd either use the built-in in operator as @Bergi suggested or the ES6 Reflect API.

const _ = console.info

const parsed = (
  { __proto__: null
  , foo: 'fu'
  , bar: 'bra'
  }
)

_('foo' in parsed) // true

_('fu' in parsed) // false


/** ES6 (fully supported in current browsers) */

_(Reflect.has(parsed, 'foo')) // true

_(Reflect.has(parsed, 'fu')) // false