Emoji cipher with ES2015

[tannerwelsh]

Description

Let's build a cipher using emoji. High five! 🙌🏽

To complete this goal, you'll create a Node.js module that exports two functions: one to encode a string of alphanumeric characters into emoji, and another to decode an emoji message to the original string.

Here's an example usage:

import {encode, decode} from "emoji-cipher"

encode("secret message")
// => "😸🏃🐴👿🏃🤓 🐥🏃😸😸🌵🌎🏃"

decode("😸🏃🐴👿🏃🤓 🐥🏃😸😸🌵🌎🏃")
// => "secret message"

If you're not familiar with Node.js and/or ECMAScript 2015, you'll need to do some research to become familiar with these technologies. For compiling, consider using Babel.

Context

A cipher is "a secret or disguised way of writing; a code" (source: Google). Technically, a cipher is a mapping between two sets of symbols.

One of the earliest and simplest ciphers in history is something you may have played with as a child: a Caesar cipher.

Translating between different representations of data is a such a common task in programming, and a cipher is a good (and fun) way to become familiar with this process.

As you work on this goal, consider the following questions:

• What does it mean to encode or decode something? Where else are these processes used?
• Which characters will the cipher support? How will the mapping between characters and emoji be represented?
• How should the functions respond to invalid input? What are the possible errors and how should they be handled?

Specifications

• Code is packaged as a module that exports (at least) the two functions encode and decode.
• Exported functions can encode and decode alphanumeric characters to/from emoji.
• Tests for both encode and decode functions are included and passing.
• All source code is written using ECMAScript 2015 syntax.
• Source code contains a README.md file with instructions and example usage.

Required

Do not remove these specs - they are required for all goals.

• The artifact produced is properly licensed, preferably with the MIT license.

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This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

[shakalee14]

I just did an emojicipher. I felt like I spent a lot of time learning about unicode, and idk if that learning deepened my understanding of javascript.