Advent of Code

Solutions for Advent of Code.

Usage

Setup

Install dependencies:

npm install

Compile JavaScript from TypeScript:

npm build

Fetching inputs

I've included a small helper to fetch and cache the inputs for a given day. Inputs are saved to /inputs/${year}-{day}.txt.

Store a session token in .env to use it:

echo SESSION_TOKEN={your-token-here} > .env

Running solutions

Pick a year and day, and run answers.js:

npm run answers 2021 1

Will output something like:

> advent-of-code-2021@1.0.0 answers
> node -r dotenv/config ./dist/scripts/answers.js 2021 1

--- 2021 day 1: sonar sweep ---
part 1: 1553
⚡ 1: 0.832ms
part 2: 1597
⚡ 2: 0.438ms

Adding solutions

If you'd like to add solutions (or fork this as a starter framework):

1. Remove existing solutions (optional)

   rm -rf solutions
   

2. Generate new template files by year and day:

   npm run add-files {year} {day} {title}
   

   e.g.

   npm run add-files 2021 1 "sonar sweep"
   

3. Run your solution.

Tests

I've included happy-path tests using the example inputs for all problems. Occasionally, I've also added tests for helper functions.

Run them with Jest:

npm run test