88 lines
2 KiB
JavaScript
88 lines
2 KiB
JavaScript
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import fs from "fs";
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const COLORS = [
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"aqua",
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"beige",
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"black",
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"blue",
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"bronze",
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"brown",
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"chartreuse",
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"coral",
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"crimson",
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"cyan",
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"fuchsia",
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"gold",
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"gray",
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"green",
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"indigo",
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"lavender",
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"lime",
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"magenta",
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"maroon",
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"olive",
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"orange",
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"plum",
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"purple",
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"red",
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"salmon",
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"silver",
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"tan",
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"teal",
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"tomato",
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"turquoise",
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"violet",
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"white",
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"yellow",
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];
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const STYLES = [
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"bright",
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"clear",
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"dark",
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"dim",
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"dotted",
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"drab",
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"dull",
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"faded",
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"light",
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"mirrored",
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"muted",
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"pale",
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"plaid",
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"posh",
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"shiny",
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"striped",
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"vibrant",
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"wavy",
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];
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const ENTRY_REGEX = new RegExp(
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`^(?<style>${STYLES.join("|")}) (?<color>${COLORS.join(
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"|"
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)}) bags contain (?:((?:\\d+ (?:${STYLES.join("|")}) (?:${COLORS.join(
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"|"
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)}))|no other) bags,?)+$`
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);
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const ENTRY_REGEX_PREGENERATED = /^(?<style>bright|clear|dark|dim|dotted|drab|dull|faded|light|mirrored|muted|pale|plaid|posh|shiny|striped|vibrant|wavy) (?<color>aqua|beige|black|blue|bronze|brown|chartreuse|coral|crimson|cyan|fuchsia|gold|gray|green|indigo|lavender|lime|magenta|maroon|olive|orange|plum|purple|red|salmon|silver|tan|teal|tomato|turquoise|violet|white|yellow) bags contain ((?:d+ (?:bright|clear|dark|dim|dotted|drab|dull|faded|light|mirrored|muted|pale|plaid|posh|shiny|striped|vibrant|wavy) (?:aqua|beige|black|blue|bronze|brown|chartreuse|coral|crimson|cyan|fuchsia|gold|gray|green|indigo|lavender|lime|magenta|maroon|olive|orange|plum|purple|red|salmon|silver|tan|teal|tomato|turquoise|violet|white|yellow))|no other) bags$/;
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/**
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* Main function for Puzzle B
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*
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* @param {string} data - Puzzle input as a single string.
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*/
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async function main(data) {
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const entries = data
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.split(/\r?\n/)
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.map((line) => line.match(ENTRY_REGEX_PREGENERATED));
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const contained = {};
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const contains = {};
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return [data.split(/\r?\n/)[0], entries[0], ENTRY_REGEX];
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}
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fs.readFile("input", (err, data) => {
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if (err) throw err;
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main(data.toString()).then(console.log).catch(console.error);
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});
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