validation.js (695B)
1 'use strict'; 2 3 try { 4 const isValidUTF8 = require('utf-8-validate'); 5 6 exports.isValidUTF8 = 7 typeof isValidUTF8 === 'object' 8 ? isValidUTF8.Validation.isValidUTF8 // utf-8-validate@<3.0.0 9 : isValidUTF8; 10 } catch (e) /* istanbul ignore next */ { 11 exports.isValidUTF8 = () => true; 12 } 13 14 /** 15 * Checks if a status code is allowed in a close frame. 16 * 17 * @param {Number} code The status code 18 * @return {Boolean} `true` if the status code is valid, else `false` 19 * @public 20 */ 21 exports.isValidStatusCode = (code) => { 22 return ( 23 (code >= 1000 && 24 code <= 1014 && 25 code !== 1004 && 26 code !== 1005 && 27 code !== 1006) || 28 (code >= 3000 && code <= 4999) 29 ); 30 };