mirror of
https://github.com/Sevichecc/Urara-Blog.git
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169 lines
3.5 KiB
Text
169 lines
3.5 KiB
Text
import process from 'node:process';
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import os from 'node:os';
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import tty from 'node:tty';
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// From: https://github.com/sindresorhus/has-flag/blob/main/index.js
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function hasFlag(flag, argv = process.argv) {
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const prefix = flag.startsWith('-') ? '' : (flag.length === 1 ? '-' : '--');
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const position = argv.indexOf(prefix + flag);
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const terminatorPosition = argv.indexOf('--');
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return position !== -1 && (terminatorPosition === -1 || position < terminatorPosition);
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}
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const {env} = process;
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let flagForceColor;
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if (
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hasFlag('no-color')
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|| hasFlag('no-colors')
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|| hasFlag('color=false')
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|| hasFlag('color=never')
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) {
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flagForceColor = 0;
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} else if (
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hasFlag('color')
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|| hasFlag('colors')
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|| hasFlag('color=true')
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|| hasFlag('color=always')
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) {
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flagForceColor = 1;
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}
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function envForceColor() {
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if ('FORCE_COLOR' in env) {
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if (env.FORCE_COLOR === 'true') {
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return 1;
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}
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if (env.FORCE_COLOR === 'false') {
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return 0;
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}
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return env.FORCE_COLOR.length === 0 ? 1 : Math.min(Number.parseInt(env.FORCE_COLOR, 10), 3);
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}
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}
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function translateLevel(level) {
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if (level === 0) {
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return false;
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}
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return {
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level,
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hasBasic: true,
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has256: level >= 2,
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has16m: level >= 3,
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};
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}
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function _supportsColor(haveStream, {streamIsTTY, sniffFlags = true} = {}) {
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const noFlagForceColor = envForceColor();
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if (noFlagForceColor !== undefined) {
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flagForceColor = noFlagForceColor;
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}
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const forceColor = sniffFlags ? flagForceColor : noFlagForceColor;
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if (forceColor === 0) {
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return 0;
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}
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if (sniffFlags) {
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if (hasFlag('color=16m')
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|| hasFlag('color=full')
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|| hasFlag('color=truecolor')) {
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return 3;
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}
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if (hasFlag('color=256')) {
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return 2;
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}
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}
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if (haveStream && !streamIsTTY && forceColor === undefined) {
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return 0;
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}
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const min = forceColor || 0;
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if (env.TERM === 'dumb') {
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return min;
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}
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if (process.platform === 'win32') {
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// Windows 10 build 10586 is the first Windows release that supports 256 colors.
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// Windows 10 build 14931 is the first release that supports 16m/TrueColor.
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const osRelease = os.release().split('.');
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if (
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Number(osRelease[0]) >= 10
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&& Number(osRelease[2]) >= 10_586
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) {
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return Number(osRelease[2]) >= 14_931 ? 3 : 2;
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}
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return 1;
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}
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if ('CI' in env) {
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if (['TRAVIS', 'CIRCLECI', 'APPVEYOR', 'GITLAB_CI', 'GITHUB_ACTIONS', 'BUILDKITE', 'DRONE'].some(sign => sign in env) || env.CI_NAME === 'codeship') {
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return 1;
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}
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return min;
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}
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if ('TEAMCITY_VERSION' in env) {
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return /^(9\.(0*[1-9]\d*)\.|\d{2,}\.)/.test(env.TEAMCITY_VERSION) ? 1 : 0;
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}
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// Check for Azure DevOps pipelines
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if ('TF_BUILD' in env && 'AGENT_NAME' in env) {
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return 1;
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}
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if (env.COLORTERM === 'truecolor') {
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return 3;
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}
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if ('TERM_PROGRAM' in env) {
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const version = Number.parseInt((env.TERM_PROGRAM_VERSION || '').split('.')[0], 10);
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switch (env.TERM_PROGRAM) {
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case 'iTerm.app':
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return version >= 3 ? 3 : 2;
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case 'Apple_Terminal':
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return 2;
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// No default
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}
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}
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if (/-256(color)?$/i.test(env.TERM)) {
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return 2;
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}
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if (/^screen|^xterm|^vt100|^vt220|^rxvt|color|ansi|cygwin|linux/i.test(env.TERM)) {
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return 1;
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}
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if ('COLORTERM' in env) {
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return 1;
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}
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return min;
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}
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export function createSupportsColor(stream, options = {}) {
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const level = _supportsColor(stream, {
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streamIsTTY: stream && stream.isTTY,
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...options,
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});
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return translateLevel(level);
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}
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const supportsColor = {
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stdout: createSupportsColor({isTTY: tty.isatty(1)}),
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stderr: createSupportsColor({isTTY: tty.isatty(2)}),
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};
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export default supportsColor;
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