node/lib/internal/util/colors.js

43 lines
1.2 KiB
JavaScript

'use strict';
let internalTTy;
function lazyInternalTTY() {
internalTTy ??= require('internal/tty');
return internalTTy;
}
module.exports = {
blue: '',
green: '',
white: '',
red: '',
gray: '',
clear: '',
reset: '',
hasColors: false,
shouldColorize(stream) {
if (process.env.FORCE_COLOR !== undefined) {
return lazyInternalTTY().getColorDepth() > 2;
}
return stream?.isTTY && (
typeof stream.getColorDepth === 'function' ?
stream.getColorDepth() > 2 : true);
},
refresh() {
if (process.stderr.isTTY) {
const hasColors = module.exports.shouldColorize(process.stderr);
module.exports.blue = hasColors ? '\u001b[34m' : '';
module.exports.green = hasColors ? '\u001b[32m' : '';
module.exports.white = hasColors ? '\u001b[39m' : '';
module.exports.yellow = hasColors ? '\u001b[33m' : '';
module.exports.red = hasColors ? '\u001b[31m' : '';
module.exports.gray = hasColors ? '\u001b[90m' : '';
module.exports.clear = hasColors ? '\u001bc' : '';
module.exports.reset = hasColors ? '\u001b[0m' : '';
module.exports.hasColors = hasColors;
}
},
};
module.exports.refresh();