`module Any = Async_js__.Import.Rpc_kernel.Rpc.Any`
`module Description = Async_js__.Import.Rpc_kernel.Rpc.Description`
`module Implementation = Async_js__.Import.Rpc_kernel.Rpc.Implementation`
`module Implementations = Async_js__.Import.Rpc_kernel.Rpc.Implementations`
`module One_way = Async_js__.Import.Rpc_kernel.Rpc.One_way`
`module Pipe_rpc = Async_js__.Import.Rpc_kernel.Rpc.Pipe_rpc`
`module Rpc = Async_js__.Import.Rpc_kernel.Rpc.Rpc`
`module State_rpc = Async_js__.Import.Rpc_kernel.Rpc.State_rpc`
`module Pipe_close_reason = Async_js__.Import.Rpc_kernel.Rpc.Pipe_close_reason`
`module Connection : sig ... end`