Server : nginx/1.18.0 System : Linux localhost 6.14.3-x86_64-linode168 #1 SMP PREEMPT_DYNAMIC Mon Apr 21 19:47:55 EDT 2025 x86_64 User : www-data ( 33) PHP Version : 8.0.16 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, Directory :  /var/www/ecommerce/node_modules/concat/

Upload File : current_dir [ Writeable ] document_root [ Writeable ]

import {readFile, readdir, writeFile, statSync} from 'fs'
import {resolve, join} from 'path'

const log = (err: Error) => console.log(err);

const isFile = (f: string) => statSync(f).isFile();

const write = (fName: string, str: string) => new Promise((res, rej) => {
  writeFile(resolve(fName), str, (err: Error) => {
    if (err) return rej(err)
    
    return res(str)
  })
});

const readFolder = (folder: string) => new Promise((res, rej) => {
  readdir(resolve(folder), (err, files) => {
    if (err) rej(err)
    
		const fileList = files.map(f => join(folder, f));
    res(fileList.filter(isFile));
  })
});


const read = (fName: string) => new Promise((res, rej) => {
  readFile(resolve(fName), (err, str) => {
    if (err) rej(err)
    
    res(str)
  })
});

const concat = (files: string[]) => new Promise((res, rej) => {
	return Promise.all(files.map(read))
		.then(src => res(src.join('\n')))
		.catch(rej);
});

export = (folder: string[] | string, outFile?: string) => new Promise((res, rej) => {
	let concatenated;

	if(typeof folder === 'string') { 
		concatenated = readFolder(folder)
			.then(concat);
	} else {
		concatenated = concat(folder);
	}

	if (outFile) {
		concatenated.then((out: string) => write(outFile, out)
			.then(res)
			.catch(rej)
		).catch(rej);
	} else {
		concatenated.then(res).catch(rej);
	}
});