3 * Expose `debug()` as the module.
6 module.exports = debug;
9 * Create a debugger with the given `name`.
11 * @param {String} name
16 function debug(name) {
17 if (!debug.enabled(name)) return function(){};
21 var ms = curr - (debug[name] || curr);
27 + ' +' + debug.humanize(ms);
29 // This hackery is required for IE8
30 // where `console.log` doesn't have 'apply'
33 && Function.prototype.apply.call(console.log, console, arguments);
38 * The currently active debug mode names.
45 * Enables a debug mode by name. This can include modes
46 * separated by a colon and wildcards.
48 * @param {String} name
52 debug.enable = function(name) {
53 localStorage.debug = name;
55 var split = (name || '').split(/[\s,]+/)
58 for (var i = 0; i < len; i++) {
59 name = split[i].replace('*', '.*?');
60 if (name[0] === '-') {
61 debug.skips.push(new RegExp('^' + name.substr(1) + '$'));
64 debug.names.push(new RegExp('^' + name + '$'));
70 * Disable debug output.
75 debug.disable = function(){
80 * Humanize the given `ms`.
87 debug.humanize = function(ms) {
92 if (ms >= hour) return (ms / hour).toFixed(1) + 'h';
93 if (ms >= min) return (ms / min).toFixed(1) + 'm';
94 if (ms >= sec) return (ms / sec | 0) + 's';
99 * Returns true if the given mode name is enabled, false otherwise.
101 * @param {String} name
106 debug.enabled = function(name) {
107 for (var i = 0, len = debug.skips.length; i < len; i++) {
108 if (debug.skips[i].test(name)) {
112 for (var i = 0, len = debug.names.length; i < len; i++) {
113 if (debug.names[i].test(name)) {
122 if (window.localStorage) debug.enable(localStorage.debug);