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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 | 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 96x 45x 45x 45x 36x 36x 43x 44x 2x 1x 1x 2x 2x 36x 43x 3x 3x 3x 3x 3x 3x 45x 96x 96x 96x 96x 233x 233x 233x 233x 81x 81x 81x 81x 33x 33x 81x 4x 4x 81x 8x 8x 81x 36x 81x 81x 152x 172x 145x 233x 137x 137x 137x 233x 30x 30x 122x 162x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 121x 162x 4x 4x 117x 162x 32x 32x 32x 32x 32x 32x 32x 32x 32x 20x 20x 12x 12x 85x 157x 8x 8x 8x 77x 77x 157x 12x 8x 12x 8x 8x 4x 233x 233x 8x 233x 4x 233x 53x 233x 12x 12x 41x 157x 32x 4x 4x 28x 28x 28x 32x 8x 8x 20x 32x 16x 16x 32x 13x 157x 4x 4x 9x 233x 96x 184x 184x 184x 101x 101x 184x 83x 83x 177x 177x 184x 96x 96x 96x 96x 96x | // MIT License // Copyright (c) Sindre Sorhus <[email protected]> (sindresorhus.com) // Permission is hereby granted, free of charge, to any person obtaining a copy // of this software and associated documentation files (the "Software"), to deal // in the Software without restriction, including without limitation the rights // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell // copies of the Software, and to permit persons to whom the Software is // furnished to do so, subject to the following conditions: // The above copyright notice and this permission notice shall be included in // all copies or substantial portions of the Software. // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE // SOFTWARE. 'use strict'; const { ArrayPrototypeSome, RegExpPrototypeExec, StringPrototypeSplit, StringPrototypeToLowerCase, } = primordials; const { validateInteger } = require('internal/validators'); let OSRelease; const COLORS_2 = 1; const COLORS_16 = 4; const COLORS_256 = 8; const COLORS_16m = 24; // Some entries were taken from `dircolors` // (https://linux.die.net/man/1/dircolors). The corresponding terminals might // support more than 16 colors, but this was not tested for. // // Copyright (C) 1996-2016 Free Software Foundation, Inc. Copying and // distribution of this file, with or without modification, are permitted // provided the copyright notice and this notice are preserved. const TERM_ENVS = { 'eterm': COLORS_16, 'cons25': COLORS_16, 'console': COLORS_16, 'cygwin': COLORS_16, 'dtterm': COLORS_16, 'gnome': COLORS_16, 'hurd': COLORS_16, 'jfbterm': COLORS_16, 'konsole': COLORS_16, 'kterm': COLORS_16, 'mlterm': COLORS_16, 'mosh': COLORS_16m, 'putty': COLORS_16, 'st': COLORS_16, // https://github.com/da-x/rxvt-unicode/tree/v9.22-with-24bit-color 'rxvt-unicode-24bit': COLORS_16m, // https://gist.github.com/XVilka/8346728#gistcomment-2823421 'terminator': COLORS_16m }; const TERM_ENVS_REG_EXP = [ /ansi/, /color/, /linux/, /^con[0-9]*x[0-9]/, /^rxvt/, /^screen/, /^xterm/, /^vt100/, ]; let warned = false; function warnOnDeactivatedColors(env) { if (warned) return; let name = ''; if (env.NODE_DISABLE_COLORS !== undefined) name = 'NODE_DISABLE_COLORS'; if (env.NO_COLOR !== undefined) { if (name !== '') { name += "' and '"; } name += 'NO_COLOR'; } if (name !== '') { process.emitWarning( `The '${name}' env is ignored due to the 'FORCE_COLOR' env being set.`, 'Warning' ); warned = true; } } // The `getColorDepth` API got inspired by multiple sources such as // https://github.com/chalk/supports-color, // https://github.com/isaacs/color-support. function getColorDepth(env = process.env) { // Use level 0-3 to support the same levels as `chalk` does. This is done for // consistency throughout the ecosystem. if (env.FORCE_COLOR !== undefined) { switch (env.FORCE_COLOR) { case '': case '1': case 'true': warnOnDeactivatedColors(env); return COLORS_16; case '2': warnOnDeactivatedColors(env); return COLORS_256; case '3': warnOnDeactivatedColors(env); return COLORS_16m; default: return COLORS_2; } } if (env.NODE_DISABLE_COLORS !== undefined || // See https://no-color.org/ env.NO_COLOR !== undefined || // The "dumb" special terminal, as defined by terminfo, doesn't support // ANSI color control codes. // See https://invisible-island.net/ncurses/terminfo.ti.html#toc-_Specials env.TERM === 'dumb') { return COLORS_2; } if (process.platform === 'win32') { // Lazy load for startup performance. if (OSRelease === undefined) { const { release } = require('os'); OSRelease = StringPrototypeSplit(release(), '.'); } // Windows 10 build 10586 is the first Windows release that supports 256 // colors. Windows 10 build 14931 is the first release that supports // 16m/TrueColor. if (+OSRelease[0] >= 10) { const build = +OSRelease[2]; if (build >= 14931) return COLORS_16m; if (build >= 10586) return COLORS_256; } return COLORS_16; } if (env.TMUX) { return COLORS_256; } if (env.CI) { if ([ 'APPVEYOR', 'BUILDKITE', 'CIRCLECI', 'DRONE', 'GITHUB_ACTIONS', 'GITLAB_CI', 'TRAVIS', ].some((sign) => sign in env) || env.CI_NAME === 'codeship') { return COLORS_256; } return COLORS_2; } if ('TEAMCITY_VERSION' in env) { return RegExpPrototypeExec(/^(9\.(0*[1-9]\d*)\.|\d{2,}\.)/, env.TEAMCITY_VERSION) !== null ? COLORS_16 : COLORS_2; } switch (env.TERM_PROGRAM) { case 'iTerm.app': if (!env.TERM_PROGRAM_VERSION || RegExpPrototypeExec(/^[0-2]\./, env.TERM_PROGRAM_VERSION) !== null ) { return COLORS_256; } return COLORS_16m; case 'HyperTerm': case 'MacTerm': return COLORS_16m; case 'Apple_Terminal': return COLORS_256; } if (env.COLORTERM === 'truecolor' || env.COLORTERM === '24bit') { return COLORS_16m; } if (env.TERM) { if (RegExpPrototypeExec(/^xterm-256/, env.TERM) !== null) { return COLORS_256; } const termEnv = StringPrototypeToLowerCase(env.TERM); if (TERM_ENVS[termEnv]) { return TERM_ENVS[termEnv]; } if (ArrayPrototypeSome(TERM_ENVS_REG_EXP, (term) => RegExpPrototypeExec(term, termEnv) !== null)) { return COLORS_16; } } // Move 16 color COLORTERM below 16m and 256 if (env.COLORTERM) { return COLORS_16; } return COLORS_2; } function hasColors(count, env) { if (env === undefined && (count === undefined || (typeof count === 'object' && count !== null))) { env = count; count = 16; } else { validateInteger(count, 'count', 2); } return count <= 2 ** getColorDepth(env); } module.exports = { getColorDepth, hasColors }; |