1  'use strict'
 2  
 3  const debug = (
 4    typeof process === 'object' &&
 5    process.env &&
 6    process.env.NODE_DEBUG &&
 7    /\bsemver\b/i.test(process.env.NODE_DEBUG)
 8  ) ? (...args) => console.error('SEMVER', ...args)
 9    : () => {}
10  
11  module.exports = debug