Bump ws from 5.2.2 to 5.2.3

README.md

@@ -1,6 +1,6 @@
-# Advent of Code 2019
+# Advent of Code
 
 ## Instructions
 
 1. `yarn`
-2. `yarn test`
+2. `yarn test:{2020|2021}`

package.json

@@ -6,7 +6,8 @@
     "author": "David Kane <david@osk.ltd>",
     "license": "MIT",
     "scripts": {
-        "test": "jest src/**/*.spec.js"
+        "test:2020": "jest src/2020/**/*.spec.js",
+        "test:2021": "jest src/2021/**/*.spec.js"
     },
     "devDependencies": {
         "@babel/plugin-transform-modules-commonjs": "^7.7.4",

src/2021/day1/index.js

@@ -0,0 +1,15 @@
+const calculateIncreases = depths =>
+    depths.reduce((total, depth, i) => (i === 0 || depths[i - 1] >= depth ? total : total + 1), 0);
+
+export const part1 = calculateIncreases;
+export const part2 = depths => {
+    return calculateIncreases(
+        depths.reduce((windows, depth, i) => {
+            if (depths.length - 1 >= i + 2) {
+                windows.push(depth + depths[i + 1] + depths[i + 2]);
+            }
+
+            return windows;
+        }, [])
+    );
+};

src/2021/day1/index.spec.js

@@ -0,0 +1,28 @@
+import { part1, part2 } from ".";
+import { getInput } from "../utils";
+
+describe("Advent of Code - Day One", () => {
+    describe("Part One", () => {
+        it("should get 7", () => {
+            const input = [199, 200, 208, 210, 200, 207, 240, 269, 260, 263];
+            expect(part1(input)).toBe(7);
+        });
+
+        it("should get 1832", async () => {
+            const input = (await getInput("day1")).split("\n").map(Number);
+            expect(part1(input)).toBe(1832);
+        });
+    });
+
+    describe("Part Two", () => {
+        it("should get 5", () => {
+            const input = [199, 200, 208, 210, 200, 207, 240, 269, 260, 263];
+            expect(part2(input)).toBe(5);
+        });
+
+        it("should get 1858", async () => {
+            const input = (await getInput("day1")).split("\n").map(Number);
+            expect(part2(input)).toBe(1858);
+        });
+    });
+});