cookie.js

/**
 * JavaScript Cookie
 * fork from https://github.com/js-cookie/js-cookie
 *
 * Copyright 2006, 2015 Klaus Hartl & Fagner Brack
 * Released under the MIT license
 */

function extend() {
	var i = 0;
	var result = {};
	for (; i < arguments.length; i++) {
		var attributes = arguments[i];
		for (var key in attributes) {
			result[key] = attributes[key];
		}
	}
	return result;
}

function init(converter) {
	function api(key, value, attributes) {
		var result;

		// Write

		if (arguments.length > 1) {
			attributes = extend({
				path: '/'
			}, api.defaults, attributes);

			//default 30 days
			if (!attributes.expires) {
				attributes.expires = 30;
			}

			if (typeof attributes.expires === 'number') {
				var expires = new Date();
				expires.setMilliseconds(expires.getMilliseconds() + attributes.expires * 864e+5);
				attributes.expires = expires;
			}

			try {
				result = JSON.stringify(value);
				if (/^[\{\[]/.test(result)) {
					value = result;
				}
			} catch (e) {
			}

			value = encodeURIComponent(String(value));
			value = value.replace(/%(23|24|26|2B|3A|3C|3E|3D|2F|3F|40|5B|5D|5E|60|7B|7D|7C)/g, decodeURIComponent);

			key = encodeURIComponent(String(key));
			key = key.replace(/%(23|24|26|2B|5E|60|7C)/g, decodeURIComponent);
			key = key.replace(/[\(\)]/g, escape);

			return (document.cookie = [
				key, '=', value,
				attributes.expires && '; expires=' + attributes.expires.toUTCString(), // use expires attribute, max-age is not supported by IE
				attributes.path && '; path=' + attributes.path,
				attributes.domain && '; domain=' + attributes.domain,
				attributes.secure ? '; secure' : ''
			].join(''));
		}

		// Read

		if (!key) {
			result = {};
		}

		// To prevent the for loop in the first place assign an empty array
		// in case there are no cookies at all. Also prevents odd result when
		// calling "get()"
		var cookies = document.cookie ? document.cookie.split('; ') : [];
		var rdecode = /(%[0-9A-Z]{2})+/g;
		var i = 0;

		for (; i < cookies.length; i++) {
			var parts = cookies[i].split('=');
			var name = parts[0].replace(rdecode, decodeURIComponent);
			var cookie = parts.slice(1).join('=');

			if (cookie.charAt(0) === '"') {
				cookie = cookie.slice(1, -1);
			}

			try {
				cookie = converter && converter(cookie, name) || cookie.replace(rdecode, decodeURIComponent);

				if (this.json) {
					try {
						cookie = JSON.parse(cookie);
					} catch (e) {
					}
				}

				if (key === name) {
					result = cookie;
					break;
				}

				if (!key) {
					result[name] = cookie;
				}
			} catch (e) {
			}
		}

		return result;
	}

	api.get = api.set = api;
	api.getJSON = function () {
		return api.apply({
			json: true
		}, [].slice.call(arguments));
	};
	api.defaults = {};

	api.remove = function (key, attributes) {
		api(key, '', extend(attributes, {
			expires: -1
		}));
	};

	api.withConverter = init;

	return api;
}

module.exports = init();