rockpaperscissors-checker/index.ts

/**
 * @example
 * // should return player1 (the winner)
 * rockpaperscissors(2, 1)
 * @example
 * // should return tie (it's a tie)
 * rockpaperscissors(1, 1)
 * @description Main function, you need to pass 2 numbers.
 * @param {number} player1 1 for rock, 2 for paper, 3 for scissors
 * @param {number} player2 1 for rock, 2 for paper, 3 for scissors
 * @returns {string} either "player1", "player2" (whoever won) or "tie" for a tie.
 */

function rockpaperscissors(
	player1: number,
	player2: number
): string {
        if (player1 === player2) {
            return "tie"
		} else if (player1 === 1 && player2 === 2) {
            return "player2"
		} else if (player1 === 2 && player2 === 1) {
            return "player1"
        } else if (player1 === 1 && player2 === 3) {
            return "player1"
        } else if (player1 === 3 && player2 === 1) {
            return "player2"
        } else if (player1 === 2 && player2 === 3) {
            return "player2"
        } else if (player1 === 3 && player2 === 2) {
            return "player1"
        } else {
            throw new Error("Make sure player1 and player2 have right numbers.")
        }
}

export default rockpaperscissors;