for-loop.js

const config = {
	init: 1,
	condition: x => x <= 256,
	each: x => console.info(`INFO: ${x}`),
	afterEach: x => x * 2,
};

// DO NOT EDIT BELOW THIS LINE

(() => {
	const defaults = {
		init: 0,
		condition: x => x < 12,
		each: console.log,
		afterEach: x => x + 1,
	};

	const getValueFactory = (defaultObject, configObject) => {
		if (!defaultObject) {
			throw new Error('Missing default object');
		} else {
			return prop => {
				if (configObject && configObject.hasOwnProperty(prop)) {
					return configObject[prop];
				} else if (defaultObject.hasOwnProperty(prop)) {
					return defaultObject[prop];
				} else {
					throw new Error(`Missing prop: ${prop}`);
				}
			};
		}
	};

	const getValue = getValueFactory(defaults, config);

	for (
		let state = getValue('init');
		getValue('condition')(state);
		state = getValue('afterEach')(state)
	) {
		getValue('each')(state);
	}
})(config);

please nobody ever use this