source: trip-planner-front/node_modules/debug/src/node.js@ fa375fe

Last change on this file since fa375fe was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit

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Line 
1/**
2 * Module dependencies.
3 */
4
5const tty = require('tty');
6const util = require('util');
7
8/**
9 * This is the Node.js implementation of `debug()`.
10 */
11
12exports.init = init;
13exports.log = log;
14exports.formatArgs = formatArgs;
15exports.save = save;
16exports.load = load;
17exports.useColors = useColors;
18exports.destroy = util.deprecate(
19 () => {},
20 'Instance method `debug.destroy()` is deprecated and no longer does anything. It will be removed in the next major version of `debug`.'
21);
22
23/**
24 * Colors.
25 */
26
27exports.colors = [6, 2, 3, 4, 5, 1];
28
29try {
30 // Optional dependency (as in, doesn't need to be installed, NOT like optionalDependencies in package.json)
31 // eslint-disable-next-line import/no-extraneous-dependencies
32 const supportsColor = require('supports-color');
33
34 if (supportsColor && (supportsColor.stderr || supportsColor).level >= 2) {
35 exports.colors = [
36 20,
37 21,
38 26,
39 27,
40 32,
41 33,
42 38,
43 39,
44 40,
45 41,
46 42,
47 43,
48 44,
49 45,
50 56,
51 57,
52 62,
53 63,
54 68,
55 69,
56 74,
57 75,
58 76,
59 77,
60 78,
61 79,
62 80,
63 81,
64 92,
65 93,
66 98,
67 99,
68 112,
69 113,
70 128,
71 129,
72 134,
73 135,
74 148,
75 149,
76 160,
77 161,
78 162,
79 163,
80 164,
81 165,
82 166,
83 167,
84 168,
85 169,
86 170,
87 171,
88 172,
89 173,
90 178,
91 179,
92 184,
93 185,
94 196,
95 197,
96 198,
97 199,
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99 201,
100 202,
101 203,
102 204,
103 205,
104 206,
105 207,
106 208,
107 209,
108 214,
109 215,
110 220,
111 221
112 ];
113 }
114} catch (error) {
115 // Swallow - we only care if `supports-color` is available; it doesn't have to be.
116}
117
118/**
119 * Build up the default `inspectOpts` object from the environment variables.
120 *
121 * $ DEBUG_COLORS=no DEBUG_DEPTH=10 DEBUG_SHOW_HIDDEN=enabled node script.js
122 */
123
124exports.inspectOpts = Object.keys(process.env).filter(key => {
125 return /^debug_/i.test(key);
126}).reduce((obj, key) => {
127 // Camel-case
128 const prop = key
129 .substring(6)
130 .toLowerCase()
131 .replace(/_([a-z])/g, (_, k) => {
132 return k.toUpperCase();
133 });
134
135 // Coerce string value into JS value
136 let val = process.env[key];
137 if (/^(yes|on|true|enabled)$/i.test(val)) {
138 val = true;
139 } else if (/^(no|off|false|disabled)$/i.test(val)) {
140 val = false;
141 } else if (val === 'null') {
142 val = null;
143 } else {
144 val = Number(val);
145 }
146
147 obj[prop] = val;
148 return obj;
149}, {});
150
151/**
152 * Is stdout a TTY? Colored output is enabled when `true`.
153 */
154
155function useColors() {
156 return 'colors' in exports.inspectOpts ?
157 Boolean(exports.inspectOpts.colors) :
158 tty.isatty(process.stderr.fd);
159}
160
161/**
162 * Adds ANSI color escape codes if enabled.
163 *
164 * @api public
165 */
166
167function formatArgs(args) {
168 const {namespace: name, useColors} = this;
169
170 if (useColors) {
171 const c = this.color;
172 const colorCode = '\u001B[3' + (c < 8 ? c : '8;5;' + c);
173 const prefix = ` ${colorCode};1m${name} \u001B[0m`;
174
175 args[0] = prefix + args[0].split('\n').join('\n' + prefix);
176 args.push(colorCode + 'm+' + module.exports.humanize(this.diff) + '\u001B[0m');
177 } else {
178 args[0] = getDate() + name + ' ' + args[0];
179 }
180}
181
182function getDate() {
183 if (exports.inspectOpts.hideDate) {
184 return '';
185 }
186 return new Date().toISOString() + ' ';
187}
188
189/**
190 * Invokes `util.format()` with the specified arguments and writes to stderr.
191 */
192
193function log(...args) {
194 return process.stderr.write(util.format(...args) + '\n');
195}
196
197/**
198 * Save `namespaces`.
199 *
200 * @param {String} namespaces
201 * @api private
202 */
203function save(namespaces) {
204 if (namespaces) {
205 process.env.DEBUG = namespaces;
206 } else {
207 // If you set a process.env field to null or undefined, it gets cast to the
208 // string 'null' or 'undefined'. Just delete instead.
209 delete process.env.DEBUG;
210 }
211}
212
213/**
214 * Load `namespaces`.
215 *
216 * @return {String} returns the previously persisted debug modes
217 * @api private
218 */
219
220function load() {
221 return process.env.DEBUG;
222}
223
224/**
225 * Init logic for `debug` instances.
226 *
227 * Create a new `inspectOpts` object in case `useColors` is set
228 * differently for a particular `debug` instance.
229 */
230
231function init(debug) {
232 debug.inspectOpts = {};
233
234 const keys = Object.keys(exports.inspectOpts);
235 for (let i = 0; i < keys.length; i++) {
236 debug.inspectOpts[keys[i]] = exports.inspectOpts[keys[i]];
237 }
238}
239
240module.exports = require('./common')(exports);
241
242const {formatters} = module.exports;
243
244/**
245 * Map %o to `util.inspect()`, all on a single line.
246 */
247
248formatters.o = function (v) {
249 this.inspectOpts.colors = this.useColors;
250 return util.inspect(v, this.inspectOpts)
251 .split('\n')
252 .map(str => str.trim())
253 .join(' ');
254};
255
256/**
257 * Map %O to `util.inspect()`, allowing multiple lines if needed.
258 */
259
260formatters.O = function (v) {
261 this.inspectOpts.colors = this.useColors;
262 return util.inspect(v, this.inspectOpts);
263};
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