welingtonms

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

// Get command line arguments
const [oldExt, newExt, targetDir] = process.argv.slice(2);

if (!oldExt || !newExt) {
	console.error(
		'Usage: node rename-extensions.js <old-extension> <new-extension> [directory]',
	);

welingtonms

function flatten(array) {
    let flattened = [];

    for (let i = 0; i < array.length; i++) {
        if (Array.isArray(array[i])) {
            flattened = flattened.concat(flatten(array[i]))
        } else {
            flattened.push(array[i])
        }
    }