[javascript mode] Allow TS prefixed | or & operators
[javascript mode] Allow TS prefixed | or & operators

Closes #5771

nightwing/CodeMirror,wingify/CodeMirror,hackmdio/CodeMirror,hackmdio/CodeMirror,codio/CodeMirror,SidPresse/CodeMirror,dperetti/CodeMirror,dperetti/CodeMirror,codio/CodeMirror,wingify/CodeMirror,notepadqq/CodeMirror,mtaran-google/CodeMirror,notepadqq/CodeMirror,codio/CodeMirror,namin/CodeMirror,mtaran-google/CodeMirror,pabloferz/CodeMirror,SidPresse/CodeMirror,nightwing/CodeMirror,hackmdio/CodeMirror,thomasjm/CodeMirror,namin/CodeMirror,thomasjm/CodeMirror,wingify/CodeMirror,pabloferz/CodeMirror,mtaran-google/CodeMirror,notepadqq/CodeMirror,dperetti/CodeMirror,SidPresse/CodeMirror,thomasjm/CodeMirror,nightwing/CodeMirror,namin/CodeMirror,pabloferz/CodeMirror