|
| 1 | +import process from 'node:process'; |
| 2 | +import os from 'node:os'; |
| 3 | +import tty from 'node:tty'; |
| 4 | + |
| 5 | +// From: https://github.com/sindresorhus/has-flag/blob/main/index.js |
| 6 | +/// function hasFlag(flag, argv = globalThis.Deno?.args ?? process.argv) { |
| 7 | +function hasFlag(flag, argv = globalThis.Deno ? globalThis.Deno.args : process.argv) { |
| 8 | + const prefix = flag.startsWith('-') ? '' : (flag.length === 1 ? '-' : '--'); |
| 9 | + const position = argv.indexOf(prefix + flag); |
| 10 | + const terminatorPosition = argv.indexOf('--'); |
| 11 | + return position !== -1 && (terminatorPosition === -1 || position < terminatorPosition); |
| 12 | +} |
| 13 | + |
| 14 | +const {env} = process; |
| 15 | + |
| 16 | +let flagForceColor; |
| 17 | +if ( |
| 18 | + hasFlag('no-color') |
| 19 | + || hasFlag('no-colors') |
| 20 | + || hasFlag('color=false') |
| 21 | + || hasFlag('color=never') |
| 22 | +) { |
| 23 | + flagForceColor = 0; |
| 24 | +} else if ( |
| 25 | + hasFlag('color') |
| 26 | + || hasFlag('colors') |
| 27 | + || hasFlag('color=true') |
| 28 | + || hasFlag('color=always') |
| 29 | +) { |
| 30 | + flagForceColor = 1; |
| 31 | +} |
| 32 | + |
| 33 | +function envForceColor() { |
| 34 | + if ('FORCE_COLOR' in env) { |
| 35 | + if (env.FORCE_COLOR === 'true') { |
| 36 | + return 1; |
| 37 | + } |
| 38 | + |
| 39 | + if (env.FORCE_COLOR === 'false') { |
| 40 | + return 0; |
| 41 | + } |
| 42 | + |
| 43 | + return env.FORCE_COLOR.length === 0 ? 1 : Math.min(Number.parseInt(env.FORCE_COLOR, 10), 3); |
| 44 | + } |
| 45 | +} |
| 46 | + |
| 47 | +function translateLevel(level) { |
| 48 | + if (level === 0) { |
| 49 | + return false; |
| 50 | + } |
| 51 | + |
| 52 | + return { |
| 53 | + level, |
| 54 | + hasBasic: true, |
| 55 | + has256: level >= 2, |
| 56 | + has16m: level >= 3, |
| 57 | + }; |
| 58 | +} |
| 59 | + |
| 60 | +function _supportsColor(haveStream, {streamIsTTY, sniffFlags = true} = {}) { |
| 61 | + const noFlagForceColor = envForceColor(); |
| 62 | + if (noFlagForceColor !== undefined) { |
| 63 | + flagForceColor = noFlagForceColor; |
| 64 | + } |
| 65 | + |
| 66 | + const forceColor = sniffFlags ? flagForceColor : noFlagForceColor; |
| 67 | + |
| 68 | + if (forceColor === 0) { |
| 69 | + return 0; |
| 70 | + } |
| 71 | + |
| 72 | + if (sniffFlags) { |
| 73 | + if (hasFlag('color=16m') |
| 74 | + || hasFlag('color=full') |
| 75 | + || hasFlag('color=truecolor')) { |
| 76 | + return 3; |
| 77 | + } |
| 78 | + |
| 79 | + if (hasFlag('color=256')) { |
| 80 | + return 2; |
| 81 | + } |
| 82 | + } |
| 83 | + |
| 84 | + // Check for Azure DevOps pipelines. |
| 85 | + // Has to be above the `!streamIsTTY` check. |
| 86 | + if ('TF_BUILD' in env && 'AGENT_NAME' in env) { |
| 87 | + return 1; |
| 88 | + } |
| 89 | + |
| 90 | + if (haveStream && !streamIsTTY && forceColor === undefined) { |
| 91 | + return 0; |
| 92 | + } |
| 93 | + |
| 94 | + const min = forceColor || 0; |
| 95 | + |
| 96 | + if (env.TERM === 'dumb') { |
| 97 | + return min; |
| 98 | + } |
| 99 | + |
| 100 | + if (process.platform === 'win32') { |
| 101 | + // Windows 10 build 10586 is the first Windows release that supports 256 colors. |
| 102 | + // Windows 10 build 14931 is the first release that supports 16m/TrueColor. |
| 103 | + const osRelease = os.release().split('.'); |
| 104 | + if ( |
| 105 | + Number(osRelease[0]) >= 10 |
| 106 | + && Number(osRelease[2]) >= 10_586 |
| 107 | + ) { |
| 108 | + return Number(osRelease[2]) >= 14_931 ? 3 : 2; |
| 109 | + } |
| 110 | + |
| 111 | + return 1; |
| 112 | + } |
| 113 | + |
| 114 | + if ('CI' in env) { |
| 115 | + if ('GITHUB_ACTIONS' in env) { |
| 116 | + return 3; |
| 117 | + } |
| 118 | + |
| 119 | + if (['TRAVIS', 'CIRCLECI', 'APPVEYOR', 'GITLAB_CI', 'BUILDKITE', 'DRONE'].some(sign => sign in env) || env.CI_NAME === 'codeship') { |
| 120 | + return 1; |
| 121 | + } |
| 122 | + |
| 123 | + return min; |
| 124 | + } |
| 125 | + |
| 126 | + if ('TEAMCITY_VERSION' in env) { |
| 127 | + return /^(9\.(0*[1-9]\d*)\.|\d{2,}\.)/.test(env.TEAMCITY_VERSION) ? 1 : 0; |
| 128 | + } |
| 129 | + |
| 130 | + if (env.COLORTERM === 'truecolor') { |
| 131 | + return 3; |
| 132 | + } |
| 133 | + |
| 134 | + if (env.TERM === 'xterm-kitty') { |
| 135 | + return 3; |
| 136 | + } |
| 137 | + |
| 138 | + if ('TERM_PROGRAM' in env) { |
| 139 | + const version = Number.parseInt((env.TERM_PROGRAM_VERSION || '').split('.')[0], 10); |
| 140 | + |
| 141 | + switch (env.TERM_PROGRAM) { |
| 142 | + case 'iTerm.app': { |
| 143 | + return version >= 3 ? 3 : 2; |
| 144 | + } |
| 145 | + |
| 146 | + case 'Apple_Terminal': { |
| 147 | + return 2; |
| 148 | + } |
| 149 | + // No default |
| 150 | + } |
| 151 | + } |
| 152 | + |
| 153 | + if (/-256(color)?$/i.test(env.TERM)) { |
| 154 | + return 2; |
| 155 | + } |
| 156 | + |
| 157 | + if (/^screen|^xterm|^vt100|^vt220|^rxvt|color|ansi|cygwin|linux/i.test(env.TERM)) { |
| 158 | + return 1; |
| 159 | + } |
| 160 | + |
| 161 | + if ('COLORTERM' in env) { |
| 162 | + return 1; |
| 163 | + } |
| 164 | + |
| 165 | + return min; |
| 166 | +} |
| 167 | + |
| 168 | +export function createSupportsColor(stream, options = {}) { |
| 169 | + const level = _supportsColor(stream, { |
| 170 | + streamIsTTY: stream && stream.isTTY, |
| 171 | + ...options, |
| 172 | + }); |
| 173 | + |
| 174 | + return translateLevel(level); |
| 175 | +} |
| 176 | + |
| 177 | +const supportsColor = { |
| 178 | + stdout: createSupportsColor({isTTY: tty.isatty(1)}), |
| 179 | + stderr: createSupportsColor({isTTY: tty.isatty(2)}), |
| 180 | +}; |
| 181 | + |
| 182 | +export default supportsColor; |
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