nodejs, php, bash: Magento 1 / 2 baseDir autodetection

mageRoot.mjs

import { realpathSync, existsSync } from 'node:fs'
import { basename, dirname } from 'node:path'

export default (() => {
    let mageRoot = dirname(realpathSync(import.meta.url.slice(7)))

    while (!(existsSync(`${ mageRoot }/app/Mage.php`) || existsSync(`${ mageRoot }/bin/magento`))) {
        if (mageRoot === '/') {
            throw new Error(`${ basename(import.meta.url.slice(7)) } should be placed inside Magento project tree`)
        }
        mageRoot = dirname(mageRoot)
    }

    return mageRoot
})()

mageRoot.php

<?php

$dirname = __DIR__;

while (!(file_exists($dirname . '/app/Mage.php') || file_exists($dirname . '/bin/magento'))) {
    if ($mageRoot === '/') {
        trigger_error(basename(__FILE__) . ' should be placed inside Magento project tree', E_USER_ERROR);
    }
    
    $dirname = dirname($dirname);
}

return $dirname;

mageRoot.sh

#!/usr/bin/env sh

mageRoot="$(dirname "$(realpath "${0}")")"

until [ -e "${mageRoot}/app/Mage.php" ] || [ -e "${mageRoot}/bin/magento" ]
do
    if [ "${mageRoot}" = "/" ]; then
        printf "%s should be placed inside Magento project tree\n" "$(basename "${0}")" >&2
        
        return 1 2>/dev/null || exit
    fi
    
    mageRoot="$(dirname "${mageRoot}")"
done

return 2>/dev/null || printf "%s" "${mageRoot}"