[javascript mode] Accept commas as separators in TypeScript interfaces
[javascript mode] Accept commas as separators in TypeScript interfaces

Issue #5734

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