feat: docker compose maybe

node_modules/@sveltejs/vite-plugin-svelte/src/utils/watch.js

@@ -0,0 +1,118 @@
+import fs from 'node:fs';
+import { log } from './log.js';
+import { knownSvelteConfigNames } from './load-svelte-config.js';
+import path from 'node:path';
+
+/**
+ * @param {import('../types/options.d.ts').ResolvedOptions} options
+ * @param {import('./vite-plugin-svelte-cache').VitePluginSvelteCache} cache
+ * @param {import('../types/id.d.ts').IdParser} requestParser
+ * @returns {void}
+ */
+export function setupWatchers(options, cache, requestParser) {
+	const { server, configFile: svelteConfigFile } = options;
+	if (!server) {
+		return;
+	}
+	const { watcher, ws } = server;
+	const { root, server: serverConfig } = server.config;
+	/** @type {(filename: string) => void} */
+	const emitChangeEventOnDependants = (filename) => {
+		const dependants = cache.getDependants(filename);
+		dependants.forEach((dependant) => {
+			if (fs.existsSync(dependant)) {
+				log.debug(
+					`emitting virtual change event for "${dependant}" because depdendency "${filename}" changed`
+				);
+				watcher.emit('change', dependant);
+			}
+		});
+	};
+	/** @type {(filename: string) => void} */
+	const removeUnlinkedFromCache = (filename) => {
+		const svelteRequest = requestParser(filename, false);
+		if (svelteRequest) {
+			const removedFromCache = cache.remove(svelteRequest);
+			if (removedFromCache) {
+				log.debug(`cleared VitePluginSvelteCache for deleted file ${filename}`);
+			}
+		}
+	};
+	/** @type {(filename: string) => void} */
+	const triggerViteRestart = (filename) => {
+		if (serverConfig.middlewareMode) {
+			// in middlewareMode we can't restart the server automatically
+			// show the user an overlay instead
+			const message =
+				'Svelte config change detected, restart your dev process to apply the changes.';
+			log.info(message, filename);
+			ws.send({
+				type: 'error',
+				err: { message, stack: '', plugin: 'vite-plugin-svelte', id: filename }
+			});
+		} else {
+			log.info(`svelte config changed: restarting vite server. - file: ${filename}`);
+			server.restart();
+		}
+	};
+
+	// collection of watcher listeners by event
+	/** @type {Record<string, Function[]>} */
+	const listenerCollection = {
+		add: [],
+		change: [emitChangeEventOnDependants],
+		unlink: [removeUnlinkedFromCache, emitChangeEventOnDependants]
+	};
+
+	if (svelteConfigFile !== false) {
+		// configFile false means we ignore the file and external process is responsible
+		const possibleSvelteConfigs = knownSvelteConfigNames.map((cfg) => path.join(root, cfg));
+		/** @type {(filename: string) => void} */
+		const restartOnConfigAdd = (filename) => {
+			if (possibleSvelteConfigs.includes(filename)) {
+				triggerViteRestart(filename);
+			}
+		};
+
+		/** @type {(filename: string) => void} */
+		const restartOnConfigChange = (filename) => {
+			if (filename === svelteConfigFile) {
+				triggerViteRestart(filename);
+			}
+		};
+
+		if (svelteConfigFile) {
+			listenerCollection.change.push(restartOnConfigChange);
+			listenerCollection.unlink.push(restartOnConfigChange);
+		} else {
+			listenerCollection.add.push(restartOnConfigAdd);
+		}
+	}
+
+	Object.entries(listenerCollection).forEach(([evt, listeners]) => {
+		if (listeners.length > 0) {
+			watcher.on(evt, (filename) => listeners.forEach((listener) => listener(filename)));
+		}
+	});
+}
+
+/**
+ * taken from vite utils
+ * @param {import('vite').FSWatcher} watcher
+ * @param {string | null} file
+ * @param {string} root
+ * @returns {void}
+ */
+export function ensureWatchedFile(watcher, file, root) {
+	if (
+		file &&
+		// only need to watch if out of root
+		!file.startsWith(root + '/') &&
+		// some rollup plugins use null bytes for private resolved Ids
+		!file.includes('\0') &&
+		fs.existsSync(file)
+	) {
+		// resolve file to normalized system path
+		watcher.add(path.resolve(file));
+	}
+}