index.js

import { print } from './js/lib.js';
/* Refer to https://github.com/OleksiyRudenko/a-tiny-JS-world for the task details
	Complete the below for code reviewers' convenience:

	Code repository: _put repo URL here_
	Web app: _put project's github pages URL here_
	*/

// ======== OBJECTS DEFINITIONS ========
// Define your objects here


// ======== OUTPUT ========
/* Use print(message) for output.
	Default tag for message is <pre>. Use print(message,'div') to change containing element tag.

	Message can contain HTML markup. You may also tweak index.html and/or styles.css.
	However, please, REFRAIN from improving visuals at least until your code is reviewed
	so code reviewers might focus on a single file that is index.js.
	*/

/* Print examples:
	print('ABC');
	print('<strong>ABC</strong>');
	print('<strong>ABC</strong>', 'div');

	print('human; John; male; 2; 2; Hello world!; Rex, Tom, Jenny');
	print('human; <strong>John</strong>; male; 2; 2; <em>Hello world!</em>; Rex, Tom, Jenny');
	print('human; <strong>John</strong>; male; 2; 2; <em>Hello world!</em>; Rex, Tom, Jenny', 'div');
	*/
const dog = {
	species: 'dog',
	name: 'Rex',
	gender: 'male',
	legs: 4,
	hands: 0,
	saying: 'woof-woof!'
};
const cat = {
	species: 'cat',
	name: 'Muca',
	gender: 'female',
	legs: 4,
	hands: 0,
	saying: 'Mijau-mijau!'
}
const man = {
	species: 'human',
	name: 'Arnold',
	gender: 'male',
	legs: 2,
	hands: 2,
	saying: "I'll be back"
}
const woman = {
	species: 'human',
	name: 'Scarlett',
	gender: 'female',
	legs: 2,
	hands: 2,
	saying: "I'll think about it tomorrow",
	friends: man.name
}
const catwoman = {
	species: 'human',
	name: 'Selina',
	gender: 'female',
	legs: 2,
	hands: 2,
	saying: cat.saying
}
man.friends = woman.name;

const folks = [dog, cat, man, woman, catwoman];
const objKeys = ["species", "name", "gender", "legs", "hands", "saying", "friends"];

folks.forEach(item => {
	print(objKeys.reduce((resStr, key) =>
		resStr += `${key}: ${item[key]};  `, ''));
});