Recursive append Node.js utility

recursiveAppend.ts

import { BaseEncodingOptions } from "fs";
import { appendFile, mkdir } from "fs/promises";
import { parse, sep } from "path";

const recursiveAppend = async (
  path: string,
  encoding: BaseEncodingOptions["encoding"] = "utf-8"
) => {
  const parts = path.split(sep);

  const lastPart = parts.pop();

  if (!lastPart) return;

  const onlyDirs = parse(lastPart).ext === "";

  if (onlyDirs) parts.push(lastPart);

  await mkdir(parts.join(sep), { recursive: true });

  if (!onlyDirs) {
    await appendFile(path, "", { encoding });
  }
};