hung when I use `denops.dispatch("", "")`

[kamecha]

Describe the bug

hung when I fire :call denops#request("hoge", "hung_dispatch") that denops plugin's dispatch

Provide a minimal vimrc with less than 50 lines to reproduce

denops plugin which has denops.dispatch("", "")

to reproduce this behavior you have to make simple denops plugin. make directory like bellow.

.
└── denops
    └── test
        └── main.ts

main.ts

import type { Entrypoint } from "jsr:@denops/[email protected]";

export const main: Entrypoint = (denops) => {
  denops.dispatcher = {
    dispatch_none: async () => {
      await denops.dispatch("", "");
    },
  };
};

.vimrc

set rtp+=~/path/to/vim-denops/denops.vim
set rtp+=~/path/to/above/directory

How to reproduce the problem from Vim startup

1. type :call denops#request("test", "dispatch_none", [])
2. hung

Expected behavior

denops return something like error, and I can operate vim after firing dispatch.

Actual behavior

after firing the dispatch I can't operate vim ( hung ).

Screenshots (if need)

Your environment

• OS: uname -a (macOS/Linux) or ver (Windows) Linux DESKTOP 5.15.90.1-microsoft-standard-WSL2+ #2 SMP Thu Aug 31 01:45:54 JST 2023 x86_64 x86_64 x86_64 GNU/Linux

• Deno version: deno --version deno 1.46.1 (stable, release, x86_64-unknown-linux-gnu) v8 12.9.202.2-rusty typescript 5.5.2

• Vim/Neovim version: vim --version or nvim --version NVIM v0.11.0-dev-408+gb1aa8f5eb Build type: RelWithDebInfo LuaJIT 2.1.1720049189

• Denops version: git log -1 (run in the denops.vim repository) commit f32f02817729129abb3e093fc21e5160512a5673 (HEAD -> main, origin/main, origin/HEAD) Merge: 45b8a1c 604b394 Author: Λlisue Date: Fri Aug 30 08:16:33 2024 +0900

  Merge pull request #414 from vim-denops/no-package-json

  :+1: no package json

Additional context