'use strict';

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };

(function () {
	'use strict';

	/* eslint-env browser */

	/**
  * This is the web browser implementation of `debug()`.
  */

	exports.log = log;
	exports.formatArgs = formatArgs;
	exports.save = save;
	exports.load = load;
	exports.useColors = useColors;
	exports.storage = localstorage();

	/**
  * Colors.
  */

	exports.colors = ['#0000CC', '#0000FF', '#0033CC', '#0033FF', '#0066CC', '#0066FF', '#0099CC', '#0099FF', '#00CC00', '#00CC33', '#00CC66', '#00CC99', '#00CCCC', '#00CCFF', '#3300CC', '#3300FF', '#3333CC', '#3333FF', '#3366CC', '#3366FF', '#3399CC', '#3399FF', '#33CC00', '#33CC33', '#33CC66', '#33CC99', '#33CCCC', '#33CCFF', '#6600CC', '#6600FF', '#6633CC', '#6633FF', '#66CC00', '#66CC33', '#9900CC', '#9900FF', '#9933CC', '#9933FF', '#99CC00', '#99CC33', '#CC0000', '#CC0033', '#CC0066', '#CC0099', '#CC00CC', '#CC00FF', '#CC3300', '#CC3333', '#CC3366', '#CC3399', '#CC33CC', '#CC33FF', '#CC6600', '#CC6633', '#CC9900', '#CC9933', '#CCCC00', '#CCCC33', '#FF0000', '#FF0033', '#FF0066', '#FF0099', '#FF00CC', '#FF00FF', '#FF3300', '#FF3333', '#FF3366', '#FF3399', '#FF33CC', '#FF33FF', '#FF6600', '#FF6633', '#FF9900', '#FF9933', '#FFCC00', '#FFCC33'];

	/**
  * Currently only WebKit-based Web Inspectors, Firefox >= v31,
  * and the Firebug extension (any Firefox version) are known
  * to support "%c" CSS customizations.
  *
  * TODO: add a `localStorage` variable to explicitly enable/disable colors
  */

	// eslint-disable-next-line complexity
	function useColors() {
		// NB: In an Electron preload script, document will be defined but not fully
		// initialized. Since we know we're in Chrome, we'll just detect this case
		// explicitly
		if (typeof window !== 'undefined' && window.process && (window.process.type === 'renderer' || window.process.__nwjs)) {
			return true;
		}

		// Internet Explorer and Edge do not support colors.
		if (typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/(edge|trident)\/(\d+)/)) {
			return false;
		}

		// Is webkit? http://stackoverflow.com/a/16459606/376773
		// document is undefined in react-native: https://github.com/facebook/react-native/pull/1632
		return typeof document !== 'undefined' && document.documentElement && document.documentElement.style && document.documentElement.style.WebkitAppearance ||
		// Is firebug? http://stackoverflow.com/a/398120/376773
		typeof window !== 'undefined' && window.console && (window.console.firebug || window.console.exception && window.console.table) ||
		// Is firefox >= v31?
		// https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages
		typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/firefox\/(\d+)/) && parseInt(RegExp.$1, 10) >= 31 ||
		// Double check webkit in userAgent just in case we are in a worker
		typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/applewebkit\/(\d+)/);
	}

	/**
  * Colorize log arguments if enabled.
  *
  * @api public
  */

	function formatArgs(args) {
		args[0] = (this.useColors ? '%c' : '') + this.namespace + (this.useColors ? ' %c' : ' ') + args[0] + (this.useColors ? '%c ' : ' ') + '+' + module.exports.humanize(this.diff);

		if (!this.useColors) {
			return;
		}

		var c = 'color: ' + this.color;
		args.splice(1, 0, c, 'color: inherit');

		// The final "%c" is somewhat tricky, because there could be other
		// arguments passed either before or after the %c, so we need to
		// figure out the correct index to insert the CSS into
		var index = 0;
		var lastC = 0;
		args[0].replace(/%[a-zA-Z%]/g, function (match) {
			if (match === '%%') {
				return;
			}
			index++;
			if (match === '%c') {
				// We only are interested in the *last* %c
				// (the user may have provided their own)
				lastC = index;
			}
		});

		args.splice(lastC, 0, c);
	}

	/**
  * Invokes `console.log()` when available.
  * No-op when `console.log` is not a "function".
  *
  * @api public
  */
	function log() {
		var _console;

		// This hackery is required for IE8/9, where
		// the `console.log` function doesn't have 'apply'
		return (typeof console === 'undefined' ? 'undefined' : _typeof(console)) === 'object' && console.log && (_console = console).log.apply(_console, arguments);
	}

	/**
  * Save `namespaces`.
  *
  * @param {String} namespaces
  * @api private
  */
	function save(namespaces) {
		try {
			if (namespaces) {
				exports.storage.setItem('debug', namespaces);
			} else {
				exports.storage.removeItem('debug');
			}
		} catch (error) {
			// Swallow
			// XXX (@Qix-) should we be logging these?
		}
	}

	/**
  * Load `namespaces`.
  *
  * @return {String} returns the previously persisted debug modes
  * @api private
  */
	function load() {
		var r = void 0;
		try {
			r = exports.storage.getItem('debug');
		} catch (error) {}
		// Swallow
		// XXX (@Qix-) should we be logging these?


		// If debug isn't set in LS, and we're in Electron, try to load $DEBUG
		if (!r && typeof process !== 'undefined' && 'env' in process) {
			r = process.env.DEBUG;
		}

		return r;
	}

	/**
  * Localstorage attempts to return the localstorage.
  *
  * This is necessary because safari throws
  * when a user disables cookies/localstorage
  * and you attempt to access it.
  *
  * @return {LocalStorage}
  * @api private
  */

	function localstorage() {
		try {
			// TVMLKit (Apple TV JS Runtime) does not have a window object, just localStorage in the global context
			// The Browser also has localStorage in the global context.
			return localStorage;
		} catch (error) {
			// Swallow
			// XXX (@Qix-) should we be logging these?
		}
	}

	module.exports = require('./common')(exports);

	var formatters = module.exports.formatters;

	/**
  * Map %j to `JSON.stringify()`, since no Web Inspectors do that by default.
  */

	formatters.j = function (v) {
		try {
			return JSON.stringify(v);
		} catch (error) {
			return '[UnexpectedJSONParseError]: ' + error.message;
		}
	};
})();
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