final test for the setup. aoc 2021 / 2

aoc_2021/day-02/example.test.ts

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+import { expect, test } from "bun:test";
+import { main as part1 } from "./part_1";
+import { main as part2 } from "./part_2";
+
+const example = `forward 5
+down 5
+forward 8
+up 3
+down 8
+forward 2`.split("\n");
+
+test("part1", async () => {
+  const answer = 150;
+  const res = await part1(example);
+  expect(res).toEqual(answer);
+});
+
+test("part2", async () => {
+  const answer = 900;
+  const res = await part2(example);
+  expect(res).toEqual(answer);
+});

aoc_2021/day-02/logs/out_1.txt

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+=== COMPUTATION ===
+
+
+=== /COMPUTATION ===
+
+=== ANSWER TO P1 ===
+1480518

aoc_2021/day-02/logs/out_2.txt

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+=== COMPUTATION ===
+
+
+=== /COMPUTATION ===
+
+=== ANSWER TO P2 ===
+1282809906

aoc_2021/day-02/part_1.ts

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+export const main = async (lines: string[]): Promise<number | string> => {
+  const { depth, horiz } = lines
+    .map((line) => line.split(" "))
+    .reduce(
+      (acc, [dir, delta]) => {
+        const d = Number(delta);
+        if (dir === "forward") {
+          acc.horiz += d;
+        }
+
+        if (dir === "up") {
+          acc.depth -= d;
+        }
+        if (dir === "down") {
+          acc.depth += d;
+        }
+        return acc;
+      },
+      { horiz: 0, depth: 0 },
+    );
+
+  return depth * horiz;
+};
+
+//
+
+const isrun = process.argv.length > 1 && process.argv[1] === import.meta.path;
+if (isrun) {
+  const file = Bun.file("./problem.txt");
+  const text = await file.text();
+  const lines = text.split("\n");
+
+  console.log("=== COMPUTATION ===\n");
+
+  const answer = await main(lines);
+
+  console.log("\n=== /COMPUTATION ===\n");
+
+  console.log("=== ANSWER TO P1 ===");
+  console.log(answer);
+}

aoc_2021/day-02/part_2.ts

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+export const main = async (lines: string[]): Promise<number | string> => {
+  const { depth, horiz } = lines
+    .map((line) => line.split(" "))
+    .reduce(
+      (acc, [dir, delta]) => {
+        const d = Number(delta);
+        if (dir === "forward") {
+          acc.horiz += d;
+          acc.depth += acc.aim * d;
+        }
+
+        if (dir === "up") {
+          acc.aim -= d;
+        }
+        if (dir === "down") {
+          acc.aim += d;
+        }
+        return acc;
+      },
+      { horiz: 0, depth: 0, aim: 0 },
+    );
+
+  return depth * horiz;
+};
+
+//
+
+const isrun = process.argv.length > 1 && process.argv[1] === import.meta.path;
+if (isrun) {
+  const file = Bun.file("./problem.txt");
+  const text = await file.text();
+  const lines = text.split("\n");
+
+  console.log("=== COMPUTATION ===\n");
+
+  const answer = await main(lines);
+
+  console.log("\n=== /COMPUTATION ===\n");
+
+  console.log("=== ANSWER TO P2 ===");
+  console.log(answer);
+}