Call the denops function using Vim's string constant format.

import type { Denops } from "https://deno.land/x/denops_std@v6.4.0/mod.ts";
import * as fn from "https://deno.land/x/denops_std@v6.4.0/function/mod.ts";
import { exprQuote as q, useExprString } from "https://deno.land/x/denops_std@v6.4.0/helper/expr_string.ts";

export async function main(denops: Denops): Promise<void> {
  await useExprString(denops, async (denops) => {
    await fn.feedkeys(denops, q`\<Cmd>echo 'foo'\<CR>`)
    await denops.cmd('echo value', { value: q`\U0001F680` })
  });
}