| "use strict"; |
| |
| /** |
| * Module dependencies. |
| */ |
| var tty = require('tty'); |
| |
| var util = require('util'); |
| /** |
| * This is the Node.js implementation of `debug()`. |
| */ |
| |
| |
| exports.init = init; |
| exports.log = log; |
| exports.formatArgs = formatArgs; |
| exports.save = save; |
| exports.load = load; |
| exports.useColors = useColors; |
| /** |
| * Colors. |
| */ |
| |
| exports.colors = [6, 2, 3, 4, 5, 1]; |
| |
| try { |
| // Optional dependency (as in, doesn't need to be installed, NOT like optionalDependencies in package.json) |
| // eslint-disable-next-line import/no-extraneous-dependencies |
| var supportsColor = require('supports-color'); |
| |
| if (supportsColor && (supportsColor.stderr || supportsColor).level >= 2) { |
| exports.colors = [20, 21, 26, 27, 32, 33, 38, 39, 40, 41, 42, 43, 44, 45, 56, 57, 62, 63, 68, 69, 74, 75, 76, 77, 78, 79, 80, 81, 92, 93, 98, 99, 112, 113, 128, 129, 134, 135, 148, 149, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 178, 179, 184, 185, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 214, 215, 220, 221]; |
| } |
| } catch (error) {} // Swallow - we only care if `supports-color` is available; it doesn't have to be. |
| |
| /** |
| * Build up the default `inspectOpts` object from the environment variables. |
| * |
| * $ DEBUG_COLORS=no DEBUG_DEPTH=10 DEBUG_SHOW_HIDDEN=enabled node script.js |
| */ |
| |
| |
| exports.inspectOpts = Object.keys(process.env).filter(function (key) { |
| return /^debug_/i.test(key); |
| }).reduce(function (obj, key) { |
| // Camel-case |
| var prop = key.substring(6).toLowerCase().replace(/_([a-z])/g, function (_, k) { |
| return k.toUpperCase(); |
| }); // Coerce string value into JS value |
| |
| var val = process.env[key]; |
| |
| if (/^(yes|on|true|enabled)$/i.test(val)) { |
| val = true; |
| } else if (/^(no|off|false|disabled)$/i.test(val)) { |
| val = false; |
| } else if (val === 'null') { |
| val = null; |
| } else { |
| val = Number(val); |
| } |
| |
| obj[prop] = val; |
| return obj; |
| }, {}); |
| /** |
| * Is stdout a TTY? Colored output is enabled when `true`. |
| */ |
| |
| function useColors() { |
| return 'colors' in exports.inspectOpts ? Boolean(exports.inspectOpts.colors) : tty.isatty(process.stderr.fd); |
| } |
| /** |
| * Adds ANSI color escape codes if enabled. |
| * |
| * @api public |
| */ |
| |
| |
| function formatArgs(args) { |
| var name = this.namespace, |
| useColors = this.useColors; |
| |
| if (useColors) { |
| var c = this.color; |
| var colorCode = "\x1B[3" + (c < 8 ? c : '8;5;' + c); |
| var prefix = " ".concat(colorCode, ";1m").concat(name, " \x1B[0m"); |
| args[0] = prefix + args[0].split('\n').join('\n' + prefix); |
| args.push(colorCode + 'm+' + module.exports.humanize(this.diff) + "\x1B[0m"); |
| } else { |
| args[0] = getDate() + name + ' ' + args[0]; |
| } |
| } |
| |
| function getDate() { |
| if (exports.inspectOpts.hideDate) { |
| return ''; |
| } |
| |
| return new Date().toISOString() + ' '; |
| } |
| /** |
| * Invokes `util.format()` with the specified arguments and writes to stderr. |
| */ |
| |
| |
| function log() { |
| return process.stderr.write(util.format.apply(util, arguments) + '\n'); |
| } |
| /** |
| * Save `namespaces`. |
| * |
| * @param {String} namespaces |
| * @api private |
| */ |
| |
| |
| function save(namespaces) { |
| if (namespaces) { |
| process.env.DEBUG = namespaces; |
| } else { |
| // If you set a process.env field to null or undefined, it gets cast to the |
| // string 'null' or 'undefined'. Just delete instead. |
| delete process.env.DEBUG; |
| } |
| } |
| /** |
| * Load `namespaces`. |
| * |
| * @return {String} returns the previously persisted debug modes |
| * @api private |
| */ |
| |
| |
| function load() { |
| return process.env.DEBUG; |
| } |
| /** |
| * Init logic for `debug` instances. |
| * |
| * Create a new `inspectOpts` object in case `useColors` is set |
| * differently for a particular `debug` instance. |
| */ |
| |
| |
| function init(debug) { |
| debug.inspectOpts = {}; |
| var keys = Object.keys(exports.inspectOpts); |
| |
| for (var i = 0; i < keys.length; i++) { |
| debug.inspectOpts[keys[i]] = exports.inspectOpts[keys[i]]; |
| } |
| } |
| |
| module.exports = require('./common')(exports); |
| var formatters = module.exports.formatters; |
| /** |
| * Map %o to `util.inspect()`, all on a single line. |
| */ |
| |
| formatters.o = function (v) { |
| this.inspectOpts.colors = this.useColors; |
| return util.inspect(v, this.inspectOpts).replace(/\s*\n\s*/g, ' '); |
| }; |
| /** |
| * Map %O to `util.inspect()`, allowing multiple lines if needed. |
| */ |
| |
| |
| formatters.O = function (v) { |
| this.inspectOpts.colors = this.useColors; |
| return util.inspect(v, this.inspectOpts); |
| }; |
| |