Codingame dev env for javascript (es2015)

Requirement

Node and npm installed
If you want your successful build to be synchronised with the coding game ide, use the chrome extension CodinGame Sync as described in the codingame FAQ

Install

Clone the repository or just download the files in a directory
Run npm install
Run npm dev to make sure everything works fine. It should run all tests and build codingame-script.js in dist/
That's all ;)

Commands

The following commands are defined in package.json. They can be run with npm run <command name>:

dev : watch modification in src and test. Run all tests and build for every changes.
build : Build all src files to dist/codingame-script.js
test : Run test once
tdd : watch for modification in src and test. Run all tests for every changes.

Language

The targeted language is javascript in es2015 version.

The script codingame-script.js is in es2015, it's supported by Codingame.

The tests are automatically transpiled in es5 (old javascript) with babel. They run with mocha + chai.

Where should I code ?

Sources

The sources should be in src directory. The entry point is index.js. The build will contains this file and all its imports recursively.

Tests

The tests should be in test directory.

Differences from Codingame

To be able to test, you will need to use a different api from the one provided by Codingame. The new api is defined in src/Codingame.js. You can import it in any javascript file where you need it.

Here the differences :

Logging : in Codingame, you use the printErr(msg) function. Here, you will use log(msg). It maps to printErr(msg) in the Codingame ide and to console.log(msg) in tests.
Input : in Codingame, you use the readline() function. Here, you will use io.readline(). It maps to readline() in Codingame ide and to a list of lines in tests. To add new lines in your tests, use io.addInputLine(line).
Output : in Codingame, you use the print(command) function to give new command. Here, you will use io.print(line). It maps to print(line) in Codingame ide and to a list of commands in tests. To read the commands in your tests, use io.getNextPrintCommand().

As you can see, it's pretty straightforward. Below an example :

// In a test, the path is '../src/Codingame'
import { io, log } from './Codingame';

// Only in test : add a new input line
io.addInputLine('0 10 9 019 0');

// To read a line
const line = io.readline();
// >> line = '0 10 9 019 0'

// Print a MOVE command
io.print('MOVE 10 10');

// Only in test : get the command previously printed
const command = io.getNextPrintCommand();
// command = 'MOVE 10 10'

// log some message
log('hello world');

quentinproust / coding-game-es2015-dev-env