utils.mjs

import path from "node:path";
import fs from "node:fs";

export const readInput = (importMeta) => {
  return fs.readFileSync(
    `${path.basename(importMeta.url, path.extname(importMeta.url))}.in`,
    "utf8",
  );
};

export const getAdjacentPositions = (i, j) => [
  ...getStraightAdjacentPositions(i, j),
  [i + 1, j + 1],
  [i + 1, j - 1],
  [i - 1, j - 1],
  [i - 1, j + 1],
];

export const getStraightAdjacentPositions = (i, j) => [
  [i, j + 1],
  [i, j - 1],
  [i + 1, j],
  [i - 1, j],
];

export const timeIt = (fn, name) => {
  let totalTime = 0;
  process.on("exit", () => {
    console.log(`Time taken by ${name}: ${totalTime}`);
  });
  return (...args) => {
    const start = performance.now();
    const res = fn(...args);
    totalTime += performance.now() - start;
    return res;
  };
};