Day 01 Part 01

01/index.ts

@@ -0,0 +1,30 @@
+const fs = require('fs').promises;
+
+const input: string = (await fs.readFile('./input.txt')).toString()
+
+console.log("Solution first part: " + partOne())
+
+
+function partOne(): string {
+	let digits = []
+	for (const line of input.split('\n')) {
+		let first = undefined
+		let last = undefined
+		for (const char of line) {
+			const digit = parseInt(char)
+			if (!Number.isNaN(digit)) {
+				if (first === undefined) {
+					first = digit
+				}
+				last = digit
+			}
+		}
+		digits.push(parseInt(`${first}${last}`))
+	}
+	let sum = digits.reduce((acc, item) => {
+		return acc += item
+	})
+	return `${sum}`
+}
+
+function partTwo() {}