export function isPlainObject()

in lib/utils.ts [19:47]

• 20 lines of code
• 6 McCabe index (conditional complexity)

export function isPlainObject(o: object) {
  if (Array.isArray(o) === true) {
    return true;
  }

  if (isObject(o) === false) {
    return false;
  }

  // If has modified constructor
  const ctor = o.constructor;
  if (typeof ctor !== 'function') {
    return false;
  }

  // If has modified prototype
  const prot = ctor.prototype;
  if (isObject(prot) === false) {
    return false;
  }

  // If constructor does not have an Object-specific method
  if (prot.hasOwnProperty('isPrototypeOf') === false) {
    return false;
  }

  // Most likely a plain Object
  return true;
}