expeditaet/solutions/typescript/2022/02/src/p1.ts

Advent of Code Solutions

import { numberPair, split, task } from '@alexaegis/advent-of-code-lib';
import packageJson from '../package.json';
import {
	Shape,
	getOutcome,
	shapeKeyMap,
	type Strategy,
	type StrategyResponse,
} from './rock-paper-scissors.type.js';

const simpleShapeStrategyMap: Record<StrategyResponse, Shape> = {
	X: Shape.ROCK,
	Y: Shape.PAPER,
	Z: Shape.SCISSORS,
};

export const p1 = (input: string): number =>
	split(input)
		.map((line) => line.splitIntoStringPair() as Strategy)
		.map(([opponent, strategy]) =>
			numberPair.assert([shapeKeyMap[opponent], simpleShapeStrategyMap[strategy]]),
		)
		.map(([opponentShape, myShape]) => myShape + getOutcome(opponentShape, myShape))
		.sum();

await task(p1, packageJson.aoc); // 11063 ~0.78ms