import { nvim_buf_get_extmark_by_id } from "https://deno.land/x/denops_std@v5.0.1/function/nvim/mod.ts";
Gets the position (0-indexed) of an extmark.
Parameters:
{buffer} Buffer handle, or 0 for current buffer
{ns_id} Namespace id from nvim_create_namespace()
{id} Extmark id
{opts} Optional parameters. Keys:
- details: Whether to include the details dict
Return: 0-indexed (row, col) tuple or empty list () if extmark id was absent