import { fn } from "https://deno.land/x/ddc_vim@v2.3.0/deps.ts";
const { foldclosed } = fn;
The result is a Number. If the line {lnum} is in a closed fold, the result is the number of the first line in that fold. If the line {lnum} is not in a closed fold, -1 is returned. {lnum} is used like with |getline()|. Thus "." is the current line, "'m" mark m, etc. Can also be used as a |method|: GetLnum()->foldclosed()
Parameters
denops: Denops