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/* 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;

}

const 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

let index = 0;

let lastC = 0;

args[0].replace(/%[a-zA-Z%]/g, 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(...args) {

// This hackery is required for IE8/9, where

// the `console.log` function doesn't have 'apply'

return typeof console === 'object' &&

console.log &&

console.log(...args);

}

/**

* 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() {

let r;

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);

const {formatters} = module.exports;

/**

* 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;

}

};