"use strict";
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/**
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* Module dependencies.
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*/
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var tty = require('tty');
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var util = require('util');
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/**
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* This is the Node.js implementation of `debug()`.
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*/
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exports.init = init;
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exports.log = log;
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exports.formatArgs = formatArgs;
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exports.save = save;
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exports.load = load;
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exports.useColors = useColors;
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/**
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* Colors.
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*/
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exports.colors = [6, 2, 3, 4, 5, 1];
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try {
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// Optional dependency (as in, doesn't need to be installed, NOT like optionalDependencies in package.json)
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// eslint-disable-next-line import/no-extraneous-dependencies
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var supportsColor = require('supports-color');
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if (supportsColor && (supportsColor.stderr || supportsColor).level >= 2) {
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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];
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}
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} catch (error) {} // Swallow - we only care if `supports-color` is available; it doesn't have to be.
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/**
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* Build up the default `inspectOpts` object from the environment variables.
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*
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* $ DEBUG_COLORS=no DEBUG_DEPTH=10 DEBUG_SHOW_HIDDEN=enabled node script.js
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*/
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exports.inspectOpts = Object.keys(process.env).filter(function (key) {
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return /^debug_/i.test(key);
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}).reduce(function (obj, key) {
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// Camel-case
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var prop = key.substring(6).toLowerCase().replace(/_([a-z])/g, function (_, k) {
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return k.toUpperCase();
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}); // Coerce string value into JS value
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var val = process.env[key];
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if (/^(yes|on|true|enabled)$/i.test(val)) {
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val = true;
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} else if (/^(no|off|false|disabled)$/i.test(val)) {
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val = false;
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} else if (val === 'null') {
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val = null;
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} else {
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val = Number(val);
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}
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obj[prop] = val;
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return obj;
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}, {});
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/**
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* Is stdout a TTY? Colored output is enabled when `true`.
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*/
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function useColors() {
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return 'colors' in exports.inspectOpts ? Boolean(exports.inspectOpts.colors) : tty.isatty(process.stderr.fd);
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}
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/**
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* Adds ANSI color escape codes if enabled.
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*
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* @api public
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*/
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function formatArgs(args) {
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var name = this.namespace,
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useColors = this.useColors;
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if (useColors) {
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var c = this.color;
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var colorCode = "\x1B[3" + (c < 8 ? c : '8;5;' + c);
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var prefix = " ".concat(colorCode, ";1m").concat(name, " \x1B[0m");
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args[0] = prefix + args[0].split('\n').join('\n' + prefix);
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args.push(colorCode + 'm+' + module.exports.humanize(this.diff) + "\x1B[0m");
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} else {
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args[0] = getDate() + name + ' ' + args[0];
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}
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}
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function getDate() {
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if (exports.inspectOpts.hideDate) {
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return '';
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}
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return new Date().toISOString() + ' ';
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}
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/**
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* Invokes `util.format()` with the specified arguments and writes to stderr.
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*/
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function log() {
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return process.stderr.write(util.format.apply(util, arguments) + '\n');
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}
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/**
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* Save `namespaces`.
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*
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* @param {String} namespaces
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* @api private
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*/
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function save(namespaces) {
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if (namespaces) {
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process.env.DEBUG = namespaces;
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} else {
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// If you set a process.env field to null or undefined, it gets cast to the
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// string 'null' or 'undefined'. Just delete instead.
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delete process.env.DEBUG;
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}
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}
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/**
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* Load `namespaces`.
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*
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* @return {String} returns the previously persisted debug modes
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* @api private
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*/
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function load() {
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return process.env.DEBUG;
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}
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/**
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* Init logic for `debug` instances.
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*
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* Create a new `inspectOpts` object in case `useColors` is set
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* differently for a particular `debug` instance.
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*/
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function init(debug) {
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debug.inspectOpts = {};
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var keys = Object.keys(exports.inspectOpts);
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for (var i = 0; i < keys.length; i++) {
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debug.inspectOpts[keys[i]] = exports.inspectOpts[keys[i]];
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}
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}
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module.exports = require('./common')(exports);
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var formatters = module.exports.formatters;
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/**
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* Map %o to `util.inspect()`, all on a single line.
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*/
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formatters.o = function (v) {
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this.inspectOpts.colors = this.useColors;
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return util.inspect(v, this.inspectOpts)
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.split('\n')
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.map(function (str) { return str.trim(); })
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.join(' ');
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};
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/**
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* Map %O to `util.inspect()`, allowing multiple lines if needed.
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*/
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formatters.O = function (v) {
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this.inspectOpts.colors = this.useColors;
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return util.inspect(v, this.inspectOpts);
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};
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