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'use strict';
var hasFlag = require('has-flag');
var support = function (level) {
if (level === 0) {
return false;
}
return {
level: level,
hasBasic: true,
has256: level >= 2,
has16m: level >= 3
};
};
var supportLevel = (function () {
if (hasFlag('no-color') ||
hasFlag('no-colors') ||
hasFlag('color=false')) {
return 0;
}
if (hasFlag('color=16m') ||
hasFlag('color=full') ||
hasFlag('color=truecolor')) {
return 3;
}
if (hasFlag('color=256')) {
return 2;
}
if (hasFlag('color') ||
hasFlag('colors') ||
hasFlag('color=true') ||
hasFlag('color=always')) {
return 1;
}
if (process.stdout && !process.stdout.isTTY) {
return 0;
}
if (process.platform === 'win32') {
return 1;
}
if ('COLORTERM' in process.env) {
return 1;
}
if (process.env.TERM === 'dumb') {
return 0;
}
if (/^xterm-256(?:color)?/.test(process.env.TERM)) {
return 2;
}
if (/^screen|^xterm|^vt100|color|ansi|cygwin|linux/i.test(process.env.TERM)) {
return 1;
}
return 0;
})();
if (supportLevel === 0 && 'FORCE_COLOR' in process.env) {
supportLevel = 1;
}
module.exports = process && support(supportLevel);
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