Update javascript with npm

Author: parrt

doc/releasing-antlr.md

@@ -264,9 +264,9 @@ All releases should be here: [https://repo1.maven.org/maven2/org/antlr/antlr4-ru
 
 ```bash
 cd ~/antlr/code/antlr4/runtime/JavaScript
+rm -rf node_modules # seems we might need this later but try it here
 npm update
 npm install
-rm -rf node_modules
 npm run build 
 npm login     # asks for username/password/2FA (npmjs.com)
 npm publish   # don't put antlr4 on there or it will try to push the old version for some reason