util.lua

   1 function lua_async.yield()
   2         local co = assert(coroutine.running(), "yield called outside of an async function")
   3
   4         setTimeout(lua_async.resume, 0, co)
   5
   6         coroutine.yield()
   7 end
   8
   9 function lua_async.sleep(ms)
  10         await(Promise(function(resolve)
  11                 setTimeout(resolve, ms)
  12         end))
  13 end