node.js - hapijs - serve static files from directory handler with variable path name -

i'm trying in routes file using hapijs + inert plugin

{   method: 'get',   path: '/l/{path*}',   handler: {     directory: {       path: (req) => {         const defaultdir = '/public';         return gethostinfo(req.headers.host).then((d) => {           if (!d || !d.directory) return defaultdir;           return d.directory;         }).catch((e) => {           return defaultdir;         });       }     }   } }, 

path parameter expects string, array or function returns string or array...in case, function returns promise...so doesn't work. tried adding hapi-as-promised package modifies reply function support then method did't work.

basically want serve static assets 1 directory or depending on host header value.

well, thing have in mind hack. first, have make extension point make async stuff:

server.ext({     type: `onprehandler`,     method: (request, reply) => {         const defaultdir = '/public';         return gethostinfo(request.headers.host).then((d) => {             if (!d || !d.directory) {                 request.app.dirpath = defaultdir;                 return;             }             request.app.dirpath = d.directory;         }).catch((e) => {             request.app.dirpath = defaultdir;         }).then(() => {             return reply.continue();         });     } }); 

and route:

{     method: `get`,     path: `/l/{path*}`,     handler: {         directory: {             path: (request) => {                 return request.app.dirpath;             }         }     } } 

i don't know how right way, tested , worked. hope helps. , gotta notice, using node server files on production isn't common way reason.