text: 'use strict';
  // Older verions of Node.js might not have `util.getSystemErrorName()`.
  // In that case, fall back to a deprecated internal.
  const util = require('util');
  
  let uv;
  
  if (typeof util.getSystemErrorName === 'function') {
  	module.exports = util.getSystemErrorName;
  } else {
  	try {
  		uv = process.binding('uv');
  
  		if (typeof uv.errname !== 'function') {
  			throw new TypeError('uv.errname is not a function');
  		}
  	} catch (err) {
  		console.error('execa/lib/errname: unable to establish process.binding(\'uv\')', err);
  		uv = null;
  	}
  
  	module.exports = code => errname(uv, code);
  }
  
  // Used for testing the fallback behavior
  module.exports.__test__ = errname;
  
  function errname(uv, code) {
  	if (uv) {
  		return uv.errname(code);
  	}
  
  	if (!(code < 0)) {
  		throw new Error('err >= 0');
  	}
  
  	return `Unknown system error ${code}`;
  }
  
  