filter extension while checking folder path using node js

Question

I have a code which check all the directories and sub-directories so while checking the directories and sub directories i want to check if the specific extension file is present or not if present then i want to filter them in two array

code i have to check all the files is

async function checkFileLoc(folderPath, depth) {
  depth -= 1;
  let files = await fsPromises.readdir(folderPath);
  files = await Promise.all(
    files.map(async (file) => {
      const filePath = path.join(folderPath, file);
      const stats = await fsPromises.stat(filePath);
      if (stats.isDirectory() && depth > 0) {
        return checkFileLoc(filePath, depth);
      } else if (stats.isFile()) return filePath;
      else return null;
    })
  );
  return files
    .reduce((all, folderContents) => all.concat(folderContents), [])
    .filter((e) => e != null);
}

Code to check if the .jpg ext file present or not but its not working for me and i want to filter further.

async function FilterFile(folderPath) {
  wantExt = [".jpg"];
  let  parts;
  const paths = await checkFileLoc(folderPath, 3);

  const otherFiles = [];
  
  for (const filePath of paths) {
    parts = filePath.split("/");
    let splitFileName = parts[parts.length - 1].split(".");
    if (wantExt.includes(`.${splitFileName[splitFileName.length - 1]}`)) {
      otherFiles.push(filePath);
    }
  }
  return { otherFiles };
}

I want to check if my location contain all the .jpg file or not if it contain then its should filter _bio.jpg and other .jpg files differently.

Output:
bioArr=
[ "animal_bio.jpg"
  "mammal_bio.jpg"
]
otherArr=
[ "tree_doc.jpg"
  "human.jpg"
  "flowes_info.jpg"
]

Answer 1

let bioArray = paths.filter(x => x.endsWith("_bio.jpg"));
paths = paths.filter( x => !bioArray.includes(x)); //removing all bio items
let otherJpg = paths.filter(x => x.endsWith(".jpg"));