How to use the supports-color.stderr function in supports-color

exports.formatArgs = formatArgs;
exports.save = save;
exports.load = load;
exports.useColors = useColors;
/**
 * Colors.
 */

exports.colors = [6, 2, 3, 4, 5, 1];

try {
  // Optional dependency (as in, doesn't need to be installed, NOT like optionalDependencies in package.json)
  // eslint-disable-next-line import/no-extraneous-dependencies
  var supportsColor = require('supports-color');

  if (supportsColor && (supportsColor.stderr || supportsColor).level >= 2) {
    exports.colors = [20, 21, 26, 27, 32, 33, 38, 39, 40, 41, 42, 43, 44, 45, 56, 57, 62, 63, 68, 69, 74, 75, 76, 77, 78, 79, 80, 81, 92, 93, 98, 99, 112, 113, 128, 129, 134, 135, 148, 149, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 178, 179, 184, 185, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 214, 215, 220, 221];
  }
} catch (error) {} // Swallow - we only care if `supports-color` is available; it doesn't have to be.

/**
 * Build up the default `inspectOpts` object from the environment variables.
 *
 *   $ DEBUG_COLORS=no DEBUG_DEPTH=10 DEBUG_SHOW_HIDDEN=enabled node script.js
 */


exports.inspectOpts = Object.keys(process.env).filter(function (key) {
  return /^debug_/i.test(key);
}).reduce(function (obj, key) {
  // Camel-case
  var prop = key.substring(6).toLowerCase().replace(/_([a-z])/g, function (_, k) {

'use strict'

var supported = require('supports-color').stderr.hasBasic
var width = require('string-width')
var stringify = require('unist-util-stringify-position')
var repeat = require('repeat-string')
var statistics = require('vfile-statistics')
var sort = require('vfile-sort')

module.exports = reporter

// Check which characters should be used.
var windows = process.platform === 'win32'
// `log-symbols` without chalk:
/* istanbul ignore next - Windows. */
var chars = windows ? {error: '×', warning: '‼'} : {error: '✖', warning: '⚠'}

// Match trailing white-space.
var trailing = /\s*$/

exports.save = save;
exports.load = load;
exports.useColors = useColors;

/**
 * Colors.
 */

exports.colors = [6, 2, 3, 4, 5, 1];

try {
	// Optional dependency (as in, doesn't need to be installed, NOT like optionalDependencies in package.json)
	// eslint-disable-next-line import/no-extraneous-dependencies
	const supportsColor = require('supports-color');

	if (supportsColor && (supportsColor.stderr || supportsColor).level >= 2) {
		exports.colors = [
			20,
			21,
			26,
			27,
			32,
			33,
			38,
			39,
			40,
			41,
			42,
			43,
			44,
			45,
			56,

self.app.use(function (req, res, next) {
    // Log requests using the "debug" module so that the output is hidden by default.
    // Enable with DEBUG=* environment variable.
    self.debug(
      (supportsColor.stderr ? '\x1B[90m' : '') +
      req.method + ' ' + req.originalUrl + ' ' + req.ip +
      (supportsColor.stderr ? '\x1B[0m' : '')
    )
    next()
  })
}

exports.save = save;
exports.load = load;
exports.useColors = useColors;

/**
 * Colors.
 */

exports.colors = [6, 2, 3, 4, 5, 1];

try {
	// Optional dependency (as in, doesn't need to be installed, NOT like optionalDependencies in package.json)
	// eslint-disable-next-line import/no-extraneous-dependencies
	const supportsColor = require('supports-color');

	if (supportsColor && (supportsColor.stderr || supportsColor).level >= 2) {
		exports.colors = [
			20,
			21,
			26,
			27,
			32,
			33,
			38,
			39,
			40,
			41,
			42,
			43,
			44,
			45,
			56,

exports.save = save;
exports.load = load;
exports.useColors = useColors;

/**
 * Colors.
 */

exports.colors = [6, 2, 3, 4, 5, 1];

try {
	// Optional dependency (as in, doesn't need to be installed, NOT like optionalDependencies in package.json)
	// eslint-disable-next-line import/no-extraneous-dependencies
	const supportsColor = require('supports-color');

	if (supportsColor && (supportsColor.stderr || supportsColor).level >= 2) {
		exports.colors = [
			20,
			21,
			26,
			27,
			32,
			33,
			38,
			39,
			40,
			41,
			42,
			43,
			44,
			45,
			56,

module.exports = function(options) {
  let colorize;
  options = options || {
    level: 'warn',
    silent: false
  };
  colorize = !options.noColor && supportsColor.stdout && supportsColor.stderr;

  const prettyFormat = format.prettyPrint({ depth: 100 });
  const logger = createLogger({
    level: options.level,
    silent: options.silent,
    transports: [
      new transports.Console({
        format: colorize
          ? format.combine(prettyFormat, format.cli())
          : format.combine(prettyFormat, format.simple())
      })
    ]
  });

  return {
    silly: function(tag, message) {

function getCodeFrame(node) {
    return codeFrame(
      state.file.code,
      node.loc.start.line,
      node.loc.start.column,
      {
        highlightCode: Boolean(supportsColor.stderr),
      }
    );
  }

function withColorSupport(wrappedFunc) {
  if (supportsColor.stdout && supportsColor.stderr) {
    return wrappedFunc;
  }
  return (msg) => msg;
}
const red = withColorSupport((str) => `\x1b[31m${str}\x1b[0m`);