import { getregtype } from "https://deno.land/x/denops_std@v6.4.0/function/mod.ts";
The result is a String, which is type of register {regname}.
The value will be one of:
"v" for characterwise text
"V" for linewise text
"<CTRL-V>{width}" for blockwise-visual text
"" for an empty or unknown register
<CTRL-V> is one character with value 0x16.
The {regname} argument is a string. If {regname} is "", the
unnamed register '"' is used. If {regname} is not specified,
v:register is used.
In Vim9-script {regname} must be one character.
Can also be used as a method:
GetRegname()->getregtype()
Parameters
denops: Denops