load_json_files_from_directory.js

load_json_files_from_directory.js

const { promisify } = require("util");
const { resolve } = require("path");
const fs = require("fs");
const readdir = promisify(fs.readdir);
const rename = promisify(fs.rename);
const stat = promisify(fs.stat);
const readfile = promisify(fs.readFile);

async function getFiles(dir) {
  const subdirs = await readdir(dir);
  const files = await Promise.all(
    subdirs.map(async subdir => {
      const res = resolve(dir, subdir);
      return (await stat(res)).isDirectory() ? getFiles(res) : res;
    })
  );
  return files.reduce((a, f) => a.concat(f), []);
}

const jsonOnly = files => files.filter(file => file.match(/\.json?$/i));
const fileToJson = async file => {
  const content = await readfile(file);
  return JSON.parse(content);
};

(async () => {
  const filePaths = await getFiles(".");
  const jsonFilePaths = jsonOnly(filePaths);
  const contents = await Promise.all(jsonFilePaths.map(fileToJson));
  console.log(contents);
})();