lab 04: node debugging, GET date API, file read/write (OOP)

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

labs/04/modules/fileManager.js

@@ -0,0 +1,26 @@
+const fs = require("fs");
+const path = require("path");
+
+class FileManager {
+	constructor(baseDir) {
+		this.baseDir = baseDir;
+	}
+
+	resolve(fileName) {
+		return path.join(this.baseDir, path.basename(fileName));
+	}
+
+	exists(fileName) {
+		return fs.existsSync(this.resolve(fileName));
+	}
+
+	append(fileName, text) {
+		fs.appendFileSync(this.resolve(fileName), `${text}\n`);
+	}
+
+	read(fileName) {
+		return fs.readFileSync(this.resolve(fileName), "utf8");
+	}
+}
+
+module.exports = FileManager;