"use strict";

module.exports = function createConsumable(initialValue) {
	let currentValue = initialValue;
	let isSet = (initialValue !== (void 0));
	
	return {
		set: function (newValue) {
			currentValue = newValue;
			isSet = true;
		},
		peek: function () {
			if (isSet) {
				return currentValue;
			} else {
				throw new Error(`No value is currently set`);
			}
		},
		isSet: function () {
			return isSet;
		},
		replace: function (newValue) {
			if (isSet) {
				let consumedValue = currentValue;
				currentValue = newValue;
				isSet = true;
				return consumedValue;
			} else {
				throw new Error(`No value is currently set`);
			}
		},
		consume: function () {
			if (isSet) {
				let consumedValue = currentValue;
				currentValue = undefined;
				isSet = false;
				return consumedValue;
			} else {
				throw new Error(`No value is currently set`);
			}
		}
	};
};