JS Question

How does it work?

Imagine an array that contains folders. These folders can have files in it. move function moves a file to another folder and returns the new state of given list.

Installation

yarn install

Usage

move(list, sourceId, destinationId);

Example list

const list = [
  {
    id: '1',
    name: 'Folder 1',
    files: [
      { id: '2', name: 'File 1' },
      { id: '3', name: 'File 2' },
      { id: '4', name: 'File 3' },
      { id: '5', name: 'File 4' },
    ],
  },
  {
    id: '6',
    name: 'Folder 2',
    files: [{ id: '7', name: 'File 5' }],
  },
]

If I run the command move (list, '4', '6')it moves the file numbered4 to the folder with ID 6`. The function returns the following new state;

const result = [
  {
    id: '1',
    name: 'Folder 1',
    files: [
      { id: '2', name: 'File 1' },
      { id: '3', name: 'File 2' },
      { id: '5', name: 'File 4' },
    ],
  },
  {
    id: '6',
    name: 'Folder 2',
    files: [
      { id: '7', name: 'File 5' },
      { id: '4', name: 'File 3' },
    ],
  },
];

Move function signature

Key	Type	Description
list	Folder[]	Given list
source	string	Id of the moved file
destination	string	Id of the folder to be moved

Folder shape

Key	Type	Description
id	string	Unique identifier of folder
name	string	Name of the folder
files	File []	Files in this folder

File shape

Key	Type	Description
id	string	Unique identifier of file
name	string	Name of the file

Running tests

yarn test

Test Results