nl_tokens: Instead of appending a script tag with src attribute ( e . g . <script src = / script . js > ) ; this reads the script file and inserts the code within a script tag . This is bec . we cannot know when a dynamically inserted script loads . see https : // github . com / tmpvar / jsdom / issues / 640#issuecomment - 22216965
pl_tokens: function _promiseAppendJQuery ( obj ) { const document = obj . document || obj ; // append to body return Promise . resolve ( ) . then ( ( ) => { if ( JQUERY_SCRIPT ) return JQUERY_SCRIPT ; return fs . readFile ( JQUERY_PATH , 'utf8' ) ; } ) . then ( src => { JQUERY_SCRIPT = src ; const el = document . createElement ( 'script' ) ; el . <mask> = 'text/javascript' ; el . innerHTML = src ; el . className = 'jsdom-jquery' ; document . body . appendChild ( el ) ; return obj ; } ) ; }