deno calculator

calculator.ts

const modes = {
	'addition': (a: number, b: number) => a + b,
	'subtraction': (a: number, b: number) => a - b,
	'multiplication': (a: number, b: number) => a * b,
	'division': (a: number, b: number) => a / b,
};

const mode = prompt(
	`Welcome to the calculator!\nPlease select a mode (${Object.keys(modes)}:`,
	'addition',
);

const firstNumber = Number(prompt('Please enter the first number:', '420'));
const secondNumber = Number(prompt('Please enter the second number:', '360'));

console.log(
	eval('modes[\'' + mode + '\'](' + firstNumber + ', ' + secondNumber + ')'),
);