🎄 Advent of Code Template

• Bun & TypeScript, with ESLint
• Automatic day setup
• Puzzle input automatically fetched
• Performance metrics

Setup

Download template (powered by unjs/giget)

npx giget gh:matijaoe/advent-of-code advent-of-code-2023

Ensure bun is installed:

bun -v

# if not installed, run this:
curl -fsSL https://bun.sh/install | bash

Install dependencies:

bun install

Set up a new day:

bun setup 1

Run day solutions:

bun day 1

Run day solutions in dev mode (without clearing console outputs):

bun day 1 --dev

For automatic puzzle input retrieval, define .env file with session cookie from adventofcode.com:

SESSION=
YEAR=2023

Structure

Generated day structure:

import { parseLines, readInput } from 'io'

const input = await readInput('day-01')

export const part1 = () => {
  const lines = parseLines(input)
  // your code goes here
  return lines.length
}

Expected index.ts solution structure (day 1 of 2022):

import { parseGroups, readInput } from 'io'
import { desc, sum } from 'utils'

const input = await readInput('day-01')

export const part1 = () => {
  const lines = parseGroups(input, Number)
  return lines.map(sum).sort(desc).at(0)
}

export const part2 = () => {
  const lines = parseGroups(input, Number)
  const top = lines.map(sum).sort(desc).slice(0, 3)
  return sum(top)
}

bun day <day-num> output:

🌲 Part One: 70698 (1.11 ms)
🎄 Part Two: 140471 (383.5 µs)

Days

⭐ / ❌

Day	Part 1	Part 2	Solution	Advent of Code link
01			Link	Day 01
02				Day 02
03				Day 03
04				Day 04
05				Day 05
06				Day 06
07				Day 07
08				Day 08
09				Day 09
10				Day 10
11				Day 11
12				Day 12
13				Day 13
14				Day 14
15				Day 15
16				Day 16
17				Day 17
18				Day 18
19				Day 19
20				Day 20
21				Day 21
22				Day 22
23				Day 23
24				Day 24
25				Day 25