for-each-safe/lib/utils/isPrototype.js

Recursively loop through the elements of a 'collection' (an array, an array-like object, or a plain object) and invoke 'callbackFn' for each element while protected against circular references.

/*
 * Checks if `value` is likely a prototype object.
 *
 * This method was extracted from the lodash library where is was a private
 * method.
 *
 * Reference:
 * [isPrototype](https://github.com/lodash/lodash/blob/165572022d58d3e39e928b33ff9b9589cc60b67b/lodash.js#L6408-L6420)
 */
function isPrototype(value) {
  var Ctor = value && value.constructor
  var proto = (typeof Ctor === 'function' && Ctor.prototype) || Object.prototype

  return value === proto
}

module.exports = isPrototype