4 Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
6 Permission is hereby granted, free of charge, to any person obtaining a copy
7 of this software and associated documentation files (the "Software"), to deal
8 in the Software without restriction, including without limitation the rights
9 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 copies of the Software, and to permit persons to whom the Software is
11 furnished to do so, subject to the following conditions:
13 The above copyright notice and this permission notice shall be included in
14 all copies or substantial portions of the Software.
16 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
28 var os = require('os');
29 var hasFlag = require('./has-flag.js');
31 var env = process.env;
33 var forceColor = void 0;
34 if (hasFlag('no-color') || hasFlag('no-colors') || hasFlag('color=false')) {
36 } else if (hasFlag('color') || hasFlag('colors') || hasFlag('color=true')
37 || hasFlag('color=always')) {
40 if ('FORCE_COLOR' in env) {
41 forceColor = env.FORCE_COLOR.length === 0
42 || parseInt(env.FORCE_COLOR, 10) !== 0;
45 function translateLevel(level) {
58 function supportsColor(stream) {
59 if (forceColor === false) {
63 if (hasFlag('color=16m') || hasFlag('color=full')
64 || hasFlag('color=truecolor')) {
68 if (hasFlag('color=256')) {
72 if (stream && !stream.isTTY && forceColor !== true) {
76 var min = forceColor ? 1 : 0;
78 if (process.platform === 'win32') {
79 // Node.js 7.5.0 is the first version of Node.js to include a patch to
80 // libuv that enables 256 color output on Windows. Anything earlier and it
81 // won't work. However, here we target Node.js 8 at minimum as it is an LTS
82 // release, and Node.js 7 is not. Windows 10 build 10586 is the first
83 // Windows release that supports 256 colors. Windows 10 build 14931 is the
84 // first release that supports 16m/TrueColor.
85 var osRelease = os.release().split('.');
86 if (Number(process.versions.node.split('.')[0]) >= 8
87 && Number(osRelease[0]) >= 10 && Number(osRelease[2]) >= 10586) {
88 return Number(osRelease[2]) >= 14931 ? 3 : 2;
95 if (['TRAVIS', 'CIRCLECI', 'APPVEYOR', 'GITLAB_CI'].some(function(sign) {
97 }) || env.CI_NAME === 'codeship') {
104 if ('TEAMCITY_VERSION' in env) {
105 return (/^(9\.(0*[1-9]\d*)\.|\d{2,}\.)/.test(env.TEAMCITY_VERSION) ? 1 : 0
109 if ('TERM_PROGRAM' in env) {
110 var version = parseInt((env.TERM_PROGRAM_VERSION || '').split('.')[0], 10);
112 switch (env.TERM_PROGRAM) {
114 return version >= 3 ? 3 : 2;
117 case 'Apple_Terminal':
123 if (/-256(color)?$/i.test(env.TERM)) {
127 if (/^screen|^xterm|^vt100|^rxvt|color|ansi|cygwin|linux/i.test(env.TERM)) {
131 if ('COLORTERM' in env) {
135 if (env.TERM === 'dumb') {
142 function getSupportLevel(stream) {
143 var level = supportsColor(stream);
144 return translateLevel(level);
148 supportsColor: getSupportLevel,
149 stdout: getSupportLevel(process.stdout),
150 stderr: getSupportLevel(process.stderr),