first commit

2.2.ts

@@ -0,0 +1,36 @@
+import { open } from 'node:fs/promises';
+
+const file = await open('./inputs/2');
+let sum = 0
+for await (let origLine of file.readLines()) {
+
+    const bag = {
+        "red": 0,
+        "green": 0,
+        "blue": 0
+    } as { [key: string]: number }
+
+    const result = (/Game (?<id>[0-9]+): (?<pulls>.*)/gm).exec(origLine)
+
+    if (result == null) throw Error('result is null')
+    const pulls = result.groups?.pulls.split('; ')
+    if (pulls == undefined) throw Error('pulls is undefined')
+    const id = Number(result.groups?.id)
+    if (isNaN(id)) throw Error('id is undefined')
+
+    
+    pulls.forEach((pull) => {
+        const balls = pull.split(', ')
+        balls.forEach((ball)=>{
+            const singles = (/(?:(?<n>\d+) (?<c>\w+)(?:, )?)+/gm).exec(ball)
+            if (singles == null || singles.groups == null) throw Error()
+            if (Number(singles.groups.n) > bag[singles.groups.c]) { 
+                bag[singles.groups.c] = Number(singles.groups.n)
+             }
+            return
+        })
+    })
+    sum += Object.values(bag).reduce((acc, val) => val * acc, 1)
+}
+
+console.log(sum)