fix scaffolding, start d3

solutions/03.ts

@@ -0,0 +1,29 @@
+import { solvables } from "../main.ts";
+
+import type { Day } from "../day.ts";
+import { readInput } from "../utils.ts";
+
+class DayImpl implements Day {
+    day = 3
+    input = readInput('03')
+
+    public part1(): Day {
+        const vals: string[] = this.input
+            .split("\n")
+
+        const result = vals.map(battery => {
+            const sorted = battery.split("").sort()
+            return Number.parseInt(sorted[0]) + Number.parseInt(sorted[1])
+        }).reduce((a, b) => a + b, 0)
+
+        console.log(result)
+
+        return this
+    }
+
+    public part2(): Day {
+        return this
+    }
+}
+
+solvables.push(new DayImpl())