source: trip-planner-front/node_modules/chalk/index.js@ 6fe77af

Last change on this file since 6fe77af was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit

  • Property mode set to 100644
File size: 6.3 KB
Line 
1'use strict';
2const escapeStringRegexp = require('escape-string-regexp');
3const ansiStyles = require('ansi-styles');
4const stdoutColor = require('supports-color').stdout;
5
6const template = require('./templates.js');
7
8const isSimpleWindowsTerm = process.platform === 'win32' && !(process.env.TERM || '').toLowerCase().startsWith('xterm');
9
10// `supportsColor.level` → `ansiStyles.color[name]` mapping
11const levelMapping = ['ansi', 'ansi', 'ansi256', 'ansi16m'];
12
13// `color-convert` models to exclude from the Chalk API due to conflicts and such
14const skipModels = new Set(['gray']);
15
16const styles = Object.create(null);
17
18function applyOptions(obj, options) {
19 options = options || {};
20
21 // Detect level if not set manually
22 const scLevel = stdoutColor ? stdoutColor.level : 0;
23 obj.level = options.level === undefined ? scLevel : options.level;
24 obj.enabled = 'enabled' in options ? options.enabled : obj.level > 0;
25}
26
27function Chalk(options) {
28 // We check for this.template here since calling `chalk.constructor()`
29 // by itself will have a `this` of a previously constructed chalk object
30 if (!this || !(this instanceof Chalk) || this.template) {
31 const chalk = {};
32 applyOptions(chalk, options);
33
34 chalk.template = function () {
35 const args = [].slice.call(arguments);
36 return chalkTag.apply(null, [chalk.template].concat(args));
37 };
38
39 Object.setPrototypeOf(chalk, Chalk.prototype);
40 Object.setPrototypeOf(chalk.template, chalk);
41
42 chalk.template.constructor = Chalk;
43
44 return chalk.template;
45 }
46
47 applyOptions(this, options);
48}
49
50// Use bright blue on Windows as the normal blue color is illegible
51if (isSimpleWindowsTerm) {
52 ansiStyles.blue.open = '\u001B[94m';
53}
54
55for (const key of Object.keys(ansiStyles)) {
56 ansiStyles[key].closeRe = new RegExp(escapeStringRegexp(ansiStyles[key].close), 'g');
57
58 styles[key] = {
59 get() {
60 const codes = ansiStyles[key];
61 return build.call(this, this._styles ? this._styles.concat(codes) : [codes], this._empty, key);
62 }
63 };
64}
65
66styles.visible = {
67 get() {
68 return build.call(this, this._styles || [], true, 'visible');
69 }
70};
71
72ansiStyles.color.closeRe = new RegExp(escapeStringRegexp(ansiStyles.color.close), 'g');
73for (const model of Object.keys(ansiStyles.color.ansi)) {
74 if (skipModels.has(model)) {
75 continue;
76 }
77
78 styles[model] = {
79 get() {
80 const level = this.level;
81 return function () {
82 const open = ansiStyles.color[levelMapping[level]][model].apply(null, arguments);
83 const codes = {
84 open,
85 close: ansiStyles.color.close,
86 closeRe: ansiStyles.color.closeRe
87 };
88 return build.call(this, this._styles ? this._styles.concat(codes) : [codes], this._empty, model);
89 };
90 }
91 };
92}
93
94ansiStyles.bgColor.closeRe = new RegExp(escapeStringRegexp(ansiStyles.bgColor.close), 'g');
95for (const model of Object.keys(ansiStyles.bgColor.ansi)) {
96 if (skipModels.has(model)) {
97 continue;
98 }
99
100 const bgModel = 'bg' + model[0].toUpperCase() + model.slice(1);
101 styles[bgModel] = {
102 get() {
103 const level = this.level;
104 return function () {
105 const open = ansiStyles.bgColor[levelMapping[level]][model].apply(null, arguments);
106 const codes = {
107 open,
108 close: ansiStyles.bgColor.close,
109 closeRe: ansiStyles.bgColor.closeRe
110 };
111 return build.call(this, this._styles ? this._styles.concat(codes) : [codes], this._empty, model);
112 };
113 }
114 };
115}
116
117const proto = Object.defineProperties(() => {}, styles);
118
119function build(_styles, _empty, key) {
120 const builder = function () {
121 return applyStyle.apply(builder, arguments);
122 };
123
124 builder._styles = _styles;
125 builder._empty = _empty;
126
127 const self = this;
128
129 Object.defineProperty(builder, 'level', {
130 enumerable: true,
131 get() {
132 return self.level;
133 },
134 set(level) {
135 self.level = level;
136 }
137 });
138
139 Object.defineProperty(builder, 'enabled', {
140 enumerable: true,
141 get() {
142 return self.enabled;
143 },
144 set(enabled) {
145 self.enabled = enabled;
146 }
147 });
148
149 // See below for fix regarding invisible grey/dim combination on Windows
150 builder.hasGrey = this.hasGrey || key === 'gray' || key === 'grey';
151
152 // `__proto__` is used because we must return a function, but there is
153 // no way to create a function with a different prototype
154 builder.__proto__ = proto; // eslint-disable-line no-proto
155
156 return builder;
157}
158
159function applyStyle() {
160 // Support varags, but simply cast to string in case there's only one arg
161 const args = arguments;
162 const argsLen = args.length;
163 let str = String(arguments[0]);
164
165 if (argsLen === 0) {
166 return '';
167 }
168
169 if (argsLen > 1) {
170 // Don't slice `arguments`, it prevents V8 optimizations
171 for (let a = 1; a < argsLen; a++) {
172 str += ' ' + args[a];
173 }
174 }
175
176 if (!this.enabled || this.level <= 0 || !str) {
177 return this._empty ? '' : str;
178 }
179
180 // Turns out that on Windows dimmed gray text becomes invisible in cmd.exe,
181 // see https://github.com/chalk/chalk/issues/58
182 // If we're on Windows and we're dealing with a gray color, temporarily make 'dim' a noop.
183 const originalDim = ansiStyles.dim.open;
184 if (isSimpleWindowsTerm && this.hasGrey) {
185 ansiStyles.dim.open = '';
186 }
187
188 for (const code of this._styles.slice().reverse()) {
189 // Replace any instances already present with a re-opening code
190 // otherwise only the part of the string until said closing code
191 // will be colored, and the rest will simply be 'plain'.
192 str = code.open + str.replace(code.closeRe, code.open) + code.close;
193
194 // Close the styling before a linebreak and reopen
195 // after next line to fix a bleed issue on macOS
196 // https://github.com/chalk/chalk/pull/92
197 str = str.replace(/\r?\n/g, `${code.close}$&${code.open}`);
198 }
199
200 // Reset the original `dim` if we changed it to work around the Windows dimmed gray issue
201 ansiStyles.dim.open = originalDim;
202
203 return str;
204}
205
206function chalkTag(chalk, strings) {
207 if (!Array.isArray(strings)) {
208 // If chalk() was called by itself or with a string,
209 // return the string itself as a string.
210 return [].slice.call(arguments, 1).join(' ');
211 }
212
213 const args = [].slice.call(arguments, 2);
214 const parts = [strings.raw[0]];
215
216 for (let i = 1; i < strings.length; i++) {
217 parts.push(String(args[i - 1]).replace(/[{}\\]/g, '\\$&'));
218 parts.push(String(strings.raw[i]));
219 }
220
221 return template(chalk, parts.join(''));
222}
223
224Object.defineProperties(Chalk.prototype, styles);
225
226module.exports = Chalk(); // eslint-disable-line new-cap
227module.exports.supportsColor = stdoutColor;
228module.exports.default = module.exports; // For TypeScript
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