View difference between Paste ID: zhFhGk5G and QzqjgBwF

 #nosp.nim / main
 import nosppkg/async_server
 import asyncdispatch
 
 when isMainModule:
-  let f = fileTable.hasKey(path)
+  asyncCheck serve() #from here
   runForever()
 
 #async_server
 import asynchttpserver, asyncdispatch, strutils
 import templates/home as th
 import templates/static as ts
 
 proc parseRequest(req: Request) {.async.} =
   if "css/" in req.url.path:
     await ts.serveStatic(req) #to here
   else:
     await req.respond(Http200, th.index())
 
 proc serve*() {.async.} =
   var server = newAsyncHttpServer()
 
   proc cb(req: Request) {.async.} =
     await parseRequest(req)
 
   waitFor server.serve(Port(5000), cb)
 
 #static.min
 import asynchttpserver, asyncdispatch, strutils, os, tables
 
 var fileTable = initTable[string, string]()
 
 proc getFileCont(path: string): string =
   let f = fileTable.hasKey(path) #to here
   "sdflkj"
 
 proc serveStatic*(req: Request) {.async.} =
   await req.respond(Http200, getFileCont(req.url.path))
 
 # error
         ... C:\Users\sveri\IdeaProjects\nim\nosp\src\nosppkg\async_server.nim(12, 17) template/generic instantiation of `async` from here
         ... C:\Users\sveri\IdeaProjects\nim\nosp\src\nosppkg\async_server.nim(18, 17) Error: type mismatch: got <AsyncHttpServer, Port, proc (req: Request): Future[system.void]{.locks: <unknown>.}>
         ... but expected one of:
         ... proc serve(server: AsyncHttpServer; port: Port;
         ...           callback: proc (request: Request): Future[void] {.closure, gcsafe.};
         ...           address = ""): owned(Future[void])
         ...   first type mismatch at position: 3
         ...   required type for callback: proc (request: Request): Future[system.void]{.closure, gcsafe.}
         ...   but expression 'cb' is of type: proc (req: Request): Future[system.void]{.locks: <unknown>.}
         ...   This expression is not GC-safe. Annotate the proc with {.gcsafe.} to get extended error information.
         ... 1 other mismatching symbols have been suppressed; compile with --showAllMismatches:on to see them
         ... expression: serve(server, Port(5000), cb)