Looks for `searchQuery` subdirectory in `folder`

find-subfolder.js

const fs = require("fs");
const path = require("path");

function findFolder(folder, searchQuery) {
  if (!fs.existsSync(folder)) {
    console.error("dir not found ", folder);
    return;
  }

  let subdirs = fs
    .readdirSync(folder, { withFileTypes: true })
    .filter((cont) => cont.isDirectory())
    .map((cont) => cont.name);
  if (subdirs.length) {
    let searchIndex = subdirs.indexOf(searchQuery);
    if (searchIndex > -1) {
      const absolutePath = path.join(
        path.resolve(folder),
        subdirs[searchIndex]
      );
      return [absolutePath];
    }
    for (let subdir of subdirs) {
      let sub = findFolder(path.join(folder, subdir), searchQuery);
      if (sub.length) {
        return sub;
      }
    }
    return [];
  } else {
    return [];
  }
}

const searchResult = findFolder("./", "is-stream")[0];
console.log(searchResult);