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﻿'use strict';

module.exports = function replace(items) {
  if (!items) {
    return this;
  }

  if (Array.isArray(items)) {
    const replaced = this.items.map((value, index) => items[index] || value);

    return new this.constructor(replaced);
  }

  if (items.constructor.name === 'Collection') {
    const replaced = { ...this.items, ...items.all() };

    return new this.constructor(replaced);
  }

  const replaced = { ...this.items, ...items };

  return new this.constructor(replaced);
};