Init project

lib/watcher.js

@@ -0,0 +1,61 @@
+const chokidar = require('chokidar');
+const path = require('path');
+
+function startWatcher({ inputFile, inputDir, server }) {
+  const isDir = !!inputDir;
+  // Watch the directory or the single file
+  const watchTarget = isDir ? path.resolve(inputDir) : path.resolve(inputFile);
+
+  const watcher = chokidar.watch(watchTarget, {
+    persistent: true,
+    ignoreInitial: true,
+    ignored: /(^|[/\\])\../, // ignore hidden files
+    usePolling: true,
+    interval: 500,
+  });
+
+  let debounceTimer = null;
+
+  function isMd(filePath) {
+    return /\.md$/i.test(filePath);
+  }
+
+  function schedule(filePath) {
+    // In dir mode, only react to .md files
+    if (isDir && filePath && !isMd(filePath)) return;
+    clearTimeout(debounceTimer);
+    debounceTimer = setTimeout(() => {
+      server.rebuild(filePath);
+    }, 80);
+  }
+
+  watcher.on('change', schedule);
+  watcher.on('add', (filePath) => {
+    if (!isDir || isMd(filePath)) {
+      console.log(`  +  Nouveau fichier : ${path.basename(filePath)}`);
+      schedule(filePath);
+    }
+  });
+  watcher.on('unlink', (filePath) => {
+    if (!isDir || isMd(filePath)) {
+      console.log(`  -  Supprimé : ${path.basename(filePath)}`);
+      schedule(null);
+    }
+  });
+
+  // Re-watch single file if recreated via temp+rename (some editors)
+  if (!isDir) {
+    watcher.on('unlink', () => {
+      setTimeout(() => watcher.add(path.resolve(inputFile)), 300);
+    });
+  }
+
+  process.on('SIGINT', () => {
+    watcher.close();
+    server.server.close();
+    console.log('\n👋  Au revoir !');
+    process.exit(0);
+  });
+}
+
+module.exports = { startWatcher };