days 1 and 2 from last year

src/day01/index.ts

@@ -0,0 +1,75 @@
+import run from "aocrunner"
+
+const parseInput = (rawInput: string) => rawInput.split("\n")
+
+const part1 = (rawInput: string) => {
+  const input = parseInput(rawInput)
+  return input.reduce((acc, line) => {
+    const [left] = line.match(/\d/)!
+    const [, right] = line.match(/.*(\d)/)!
+    return acc + parseInt(left) * 10 + parseInt(right)
+  }, 0)
+}
+
+const part2 = (rawInput: string) => {
+  const input = parseInput(rawInput)
+  return input.reduce((acc, line) => {
+    const [left] = line.match(
+      /\d|one|two|three|four|five|six|seven|eight|nine/,
+    )!
+    const [, right] = line.match(
+      /.*(\d|one|two|three|four|five|six|seven|eight|nine)/,
+    )!
+    const lookup = new Map<string, number>()
+    for (let i = 1; i < 10; i++) {
+      lookup.set(String(i), i)
+      lookup.set(
+        [
+          "one",
+          "two",
+          "three",
+          "four",
+          "five",
+          "six",
+          "seven",
+          "eight",
+          "nine",
+        ][i - 1],
+        i,
+      )
+    }
+    return acc + lookup.get(left)! * 10 + lookup.get(right)!
+  }, 0)
+}
+
+run({
+  part1: {
+    tests: [
+      {
+        input: `1abc2
+        pqr3stu8vwx
+        a1b2c3d4e5f
+        treb7uchet`,
+        expected: 142,
+      },
+    ],
+    solution: part1,
+  },
+  part2: {
+    tests: [
+      {
+        input: `two1nine
+        eightwothree
+        abcone2threexyz
+        xtwone3four
+        4nineeightseven2
+        zoneight234
+        7pqrstsixteen`,
+        expected: 281,
+      },
+    ],
+    solution: part2,
+  },
+  trimTestInputs: true,
+  onlyTests: false,
+})