link_with_web_components_watch.js

/**
 * This file watches the original Unipept web components directory for changes and automatically applies these changes
 * to the local copy of the Unipept web components (inside the node_modules folder).
 *
 * This script is only here for use during development of Unipept and should not be used in the production environment.
 * The package Chokidar is required to run this file.
 */

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

const directory = './../unipept-web-components/dist'
const typesDirectory = './../unipept-web-components/types'

const errHandler = function(err) {
    if (err) {
        console.error(err);
    }
}

console.log("Watching file system for changes...");

// Watch for changes to the web components directory.
function watchDirectory(dir) {
    chokidar.watch(dir).on('all', (event, currentPath) => {
        if (!currentPath.includes('/node_modules') && !currentPath.includes('/.git')) {
            const filteredPath = currentPath.replace('../unipept-web-components', './node_modules/unipept-web-components');
            const directory = path.dirname(filteredPath);
            switch(event) {
                case 'add':
                    fs.mkdirSync(directory, { recursive: true }, errHandler);
                    fs.copyFile(currentPath, filteredPath, errHandler);
                    break;
                case 'change':
                    fs.copyFile(currentPath, filteredPath, errHandler);
                    break;
                case 'unlink':
                    fs.unlink(filteredPath, errHandler);
                    break;
            }
            console.log(event, currentPath);
        }
    });
}

watchDirectory(directory);
watchDirectory(typesDirectory);