copy-static-files.js

import fs from 'fs';
import { fileURLToPath } from "url";

function getCurrentFolder() {
    const folder = fileURLToPath(new URL(".", import.meta.url));
    // for windows OS, convert backslash to regular slash and drop drive letter from path
    const path = folder.includes('\\')? folder.replaceAll('\\', '/') : folder;
    const colon = path.indexOf(':');
    return colon == 1? path.substring(colon+1) : path;
}

function getFolder(target) {
    return getCurrentFolder() + target;
}

function isDir(folder) {
    if (fs.existsSync(folder)) {
        const stats = fs.statSync(folder);
        return stats.isDirectory();
    } else {
        return false;
    }
}

function copyFolder(src, target) {
    if (fs.existsSync(src)) {
        fs.readdirSync(src).forEach(f => {
            const srcPath = `${src}/${f}`
            const targetPath = `${target}/${f}`
            const srcStats = fs.statSync(srcPath);
            if (srcStats.isDirectory()) {
                createParentFolders(targetPath);
                copyFolder(srcPath, targetPath);               
            } else {
                if (fs.existsSync(targetPath)) {
                    fs.rmSync(targetPath);
                }
                fs.copyFileSync(srcPath, targetPath);
            }
        })
    }
}

function createParentFolders(path) {
    const parts = path.split('/');
    let s = '';
    for (let i=0; i < parts.length; i++) {
        if (parts[i]) {
            s += `/${parts[i]}`;
            if (!fs.existsSync(s)) {
                fs.mkdirSync(s);
            }
        }
    }
}

function copyResourceFiles(src, target) {
    if (!fs.existsSync(src)) {
        console.log(`ERROR: ${src} does not exist`);
        return;
    }
    if (!fs.existsSync(target)) {
        console.log(`ERROR: ${target} does not exist`);
        return;
    }
    if (!isDir(src)) {
        console.log(`ERROR: ${src} is not a folder`);
        return;
    }
    if (!isDir(target)) {
        console.log(`ERROR: ${target} is not a folder`);
        return;
    }
    const srcResource = `${src}/resources`;
    if (!isDir(srcResource)) {
        console.log(`ERROR: ${srcResource} is not a folder`);
        return;
    }
    const targetResource = `${target}/resources`;
    if (!isDir(targetResource)) {
        fs.mkdirSync(targetResource);
    }
    copyFolder(srcResource, targetResource);
}

const src = getFolder('src');
const target = getFolder('dist');

copyResourceFiles(src, target);