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 distDirectory = "./../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.
chokidar.watch(distDirectory)
    .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);
        }
    });

chokidar.watch(typesDirectory)
    .on("all", (event, currentPath) => {
        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);
    });