adventofcode/2022/03/part1.js

import * as R from "remeda";
import fs from "fs-extra";
import path from "path";

export const readFile = (year, day, file) =>
  fs.readFileSync(path.join(year, day, file), "utf8");

export const sample = readFile("2022", "03", "sample");
export const puzzleInput = readFile("2022", "03", "input");

export const solutionPart1 = R.createPipe(
  (text) => text.split("\n"),
  R.filter(R.identity),
  R.map((line) => line.split("")),
  R.map((line) => [line, line.splice(line.length / 2)]),
  R.map((line) => R.intersection(...line)),
  R.map((line) => line[0].charCodeAt(0)),
  R.map((code) => (code > 96 ? code - 96 : code - 38)),
  R.sumBy(R.identity)
);